Creation of 1D Connectors

Creation of 1D Connector's Challenge.

 

Objective -

• To mesh the given frame assembly with 2D element's with a target element size of 5 units.
• Use different types of Connection techniques and Deploy connector's to the component's as per given below.
• How to debug the connector's,If they are failing.

1. Right_Rail_2 & Front_truss_1 - Seam-Quad(angled+capped+L).
2. Left_Rail_2 & Front_truss_1 - Quad elements.
3. Front_truss_2, Front_truss_1 & Right_Rail_1 - Spot weld with 2 Layers and 5 mm Diameter.
4. Front_truss_2, Front_truss_1 & Left_Rail_1  - Hexa (Adhesive).
5. Rear_truss_2 & Right_Rail_2 - Bolt Connector.
6. Rear_truss_2 & Left_Rail_2 - Bolt Connector.
7. Right_Rail_1 & Right_Rail_2 - Spot-weld with Rigid Elements.
8. Left_Rail_1 & Left_Rail_2 - Spot-weld with Spring Elements.
9. The component's which have been left,Join them all with suitable connectors.

Theory of Connector's and their terminologie's -

Connectors Definition :

• They are geometric entities (not FE) primarily used to create spot- and seam welds, but also used to create adhesives, bolts and masses.
• They are simply a database of information defining specific requests for connections at specific locations.
• They are a medium to create both solver independent and/or solver dependent connections between geometric and/or FE entities.
• They can be created interactively or from different master connection files (.xml, .mcf, .vip).

Types of Connector's :

Spot-

• Connections at a point.

Figure 1-Spot

Bolt-

• Connections at hole locations.

Figure 2-Bolt

Trim Mass-

• Non-physical mass.
• Simplification through replacement of parts with mass only or add mass to existing part.

Figure 3-Trim Mass

Seam-

• Connections along a length.
• Seam welds.
• Connects geometry only.

Figure 4-Seam

Area-

• Connection of areas.
• Adhesives.

Figure 5-Area

Connector's Module- 

Figure 6-Connector's Module

• Spot
• Bolt
• Seam
• Area

[create, edit, and realize that style of connectors.]

• Apply Mass – adds a mass value to entities.Used to represent mass of parts that are not present in the model.
• FE Absorb – Create new connectors from existing elements of recognizable FE representations of welds, bolts, adhesives, etc.
• Add Links – Add link entities to existing connectors.
• Unrealize – Delete FE representations of welds / bolts / adhesives associated with existing connectors.
• Compare – Checks the MCF against displayed model file.
• Quality – Check for duplicate connectors, combine connectors, check quality of realized elements.

Connectors-Terminology

Link Entities - The entities that are being connected.

• User can explicitly define link entities or specify a search tolerance.
• Can be components, elements, surfaces, nodes, or tags.
• Typically components are linked.

Connector Location - Where the entities are linked.

• Nodes – created at the node location.
• Points – created at the point location.
• Lines – created for the line line may be split into multiple projection locations as specified by the offset, spacing, and density values.
• Elements – created at the element location (adhesives only).
• Surface – created at the surface location (adhesives only).

Connector Realization – The creation of the finite element representation of that connector.

• Rigids, springs, etc., or custom configurations such as ACMs, CWELDS, etc.

Three Types of Connector's State – Whether an FE representation of a connector has been created.

• Unrealized - The initial status of the connector entity upon creation.

• Newly created or imported connector before the first realization.
• Editing the connector definition (i.e. add or delete a link entity from the connector), the connector removes the welds it created, and reverts back to an unrealized state.
• Manual unrealization.

Figure 7-Unrealized

• Realized - The status only if creation of the FE weld representation at the connector was successful.

Figure 8-Successfully Realized

• Failed – The status if the creating the FE weld representation at the connector was not successful(Failed).

• If the creation of the FE representation is unsuccessful (due to low tolerance, insufficient link entities, etc.) the connector icon is displayed as failed (red).

Figure 9-Failed Connector

Layer's

• Number of FE weld layers to attempt to generate for the connector 2T, 3T, etc.

Figure 10-2T,3T Weld

Link's to some useful articles about connector's

• https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:1c7d2c33-6b24-4c77-96c4-09fa07b978fc
• https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:fc3ff7dc-2ac2-40fc-bd72-1d6beb4d0382
• https://skill-lync.com/knowledgebase/realizing-connectors

These are the Connection's which are used mostly in industries-

• Seam Weld
• Spot Weld and 
• Bolt Weld

Seam Welding and it's Apllication's-

• Seam welding is the joining of work pieces made of similar or dissimilar materials along a continuous seam. Seam welding can be broken down into two main techniques, resistance seam welding and  friction seam welding.

Figure 11-Seam Weld

• It is used for welding of stainless steels, steels alloys, nickel and its alloys, magnesium alloys etc

Spot Welding and it's Apllication's-

• Spot welding (or resistance spot welding) is a type of electric resistance welding used to weld various sheet metal products, through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current.

Figure 12-Spot Weld

• Spot welding is typically used when welding particular types of sheet metal, welded wire mesh or wire mesh. 

Bolt Connection's Model-

Figure 13-Bolt Connection's

Procedure -

• Deploying connector's in the sense,A type of joining operation which is used to combine the different component's of an assembly.

Phase 1:Importing the Model

• First import the model to the user interface from the file given to us.

1. Hence we are importing a given CAD geometry into hypermesh.
2. There are file formates like IGES,STEP,Parasolid where we can import these file formats into any CAD,CAE Softwares.
3. But in hypermesh we can only import three file formates like
   

• IGES [Initial Graphics Exchange Specification].
• STEP [Standard for the Exchange of Product Model Data].
• Solidworks.
• IGES,STEP,These two are standard file formats which are used most in industries.But now a days in industries,they are aslo using Parasolid file format.

1. 

Figure 14-Frame Assembly

• After importing the model,Give the quality criteria parameter's to mesh the model which has been given below.

Target Element Size-5 Units

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2 Units
6	Max. Length	8 Units
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	30
10	Max angle Tria	110
11	Tria %	15

• Follow the quality criteria given above and mesh the component with target element size of 5 units.

Phase 2-Examining

• Before working on the model.We have to check the geometry if there are any errors like

1. Damaged Geometry.
2. Free edges in unnecessary areas.
3. Unnecessary points on the lines.
4. Unnecessary Connections and connectivity error.

[Note:If you want you can check all these for this given model,But in this challenge no need to do that,Focus on the connector's.But for the other model's,you will be checking all these and then only you will deploy a connector]

 

2:1 Assigning a property and Material for the components.

• To assign a property,Right click on the feature tree panel/right click`=>`create`=>`property.
• Do the same thing for the material also.
• After creating property and material.Select the property and give the material which you have created and thickness to the property.
• And then go and assign the property to the component which you have exracted the mid surface from it.

 

Figure 15-Assigning Property fir the Component's

 

2:2 Checking symmetry for the component's.

• By examining the components,we have only 4 components which are symmetric called

• Right Rail 1
• Right Rail 2
• Left Rail 1
• Left Rail 2

Figure 16-Symmetric Component's

 

2:3 Why checking symmetry is necessary for the component's ? 

• Cause we can save the time.
• If we have symmetry in the components.We can cut into half and we can reflect the surface and mesh on the other side.By doing like this,we can save lot of time instead of doing both sides.
• For this Component,No need to cut the surface,Just we will be reflecting element's and connector's to the other side.

[Note:For this component.You can reflect the connector's if you want.I'm describing below,Like how to reflect the connector's ]

 

2:4 Manual Clean Up

• Manual clean up is necessary to achieve a things like
  

• Proper mesh flow.
• Feature capturing.
• To eschew the elements failing for the minimum length.
• For surface deformations.
• For connectivity errors.

[Note:Proper Mesh Flow is important for the connector's,Then only you can deploy a connector successfully,If your mesh is not proper then you can't deploy a connector or the connector will fail.So be aware of it.]

 

Phase 3-Start Meshing

• You can mesh the component's individually or you can mesh it entire assembly at a time.
• As of now for this challenge,We will be only focussing on connector's,So mesh the entire assembly.
• You can give mesh type as quads,mixed,trias.It's upto you.
• Now i'm meshing this component and using mesh type as quad's.
• Open the AutoMesh panel by pressing F12.
• Go to the size and bias subpanel.
• Set the mesh mode to automatic.(It may currently be set to interactive.)
• Set the entity selector to surfs.
• Click surfs >> displayed.
• In the elem size = field, enter 5.
• Set the mesh type to quad.
• Set the elems to surf comp/elems to current comp toggle to elems to surf comp.
• Click mesh. HyperMesh meshes the surfaces.
• Click return.

Figure 17-Meshing Component

 

Figure 17-Mesh Panel

 

[Note:As of now for this challenge,No need to check element quality.We will be focussing on connector's only] 

 

Phase 4-Start Giving Connection's to the Component's

• Before giving connection's to the components,Load the connector browser from the user interface panel.
• Open the Connectors browser by

• By clicking View > Browsers > HyperMesh > Connector from the menu bar.
• Review the layout of the Connector browser. Currently there are no components or connectors listed because there are no connectors in the model.

• [Note:Use the Connector browser to view and manage connectors.
• The top portion of the browser is referred to as the Link Entity browser, and it displays information about linked entities.
• The middle portion is referred to as the Connector Entity browser, and it contains a list of the connectors in your model.
• The bottom portion of the browser is referred to as the Connector Entity Editor, and it displays attributes assigned to the connector(s) selected in the Connector Entity browser. HyperMesh groups the connectors based on their connection type.

Figure 18-Connector Browser

 

 

Figure 18:1 Connector Browser

1. Right Rail_2 & Front Truss_1-

• Create connectors between the shell mesh of the Right_Rail_2 and Front Truss_1.

• Seam Panel Organization

Figure 18:2 Seam Panel

1. Seam Subpanel-Create and realize seam connectors.
2. Create Subpanel-Create, but do not realize seam connectors.
3. Realize Subpanel-Realize existing seam connectors (no creation or editing possible).
4. Edit Subpanel-Edit existing seam connectors.
5. Partition Subpanel-Partition (separate into sections of connections that passed or failed valid projections) an existing seam connector.

• In the Model browser, Component folder,right click on the Right_Rail 2 and select Make Current from the context menu and isolate that component.
• Open the Seam Panel.
• Go to the Seam subpanel.
• Set the location selector to node list.
• Click node list >> by path
• Set the connect what selector to comps and click comps.
• Select the components-Right_Rail_2 and Front Truss_1.
• Change Weld type to  Seam-Quad(angled+capped+L).
• Give a proper Spacing, Search Tolerance,Weld Angle,Cap Angle,Runoff Angle.

A Brief Explanation about Spacing, Search Tolerance,Weld Angle,Cap Angle,Runoff Angle.

Spacing-

Distance between each weld location on the line.

 

 

Figure 19-Before

 

 

Figure 20-After

 

• In this figure 19 and 20,You can see the difference.You might got an idea,What is spacing.
• [Note:Alway's give a spacing value as your target element size given.]

Search Tolerance-

• Define a distance from the connector location (per each test point).
• Only entities within this tolerance can be taken into account for the link detection and the final realization. Thus, the tolerance is used twice: first for the link determination and again for the realization. In the second step the tolerance is used to verify whether adequate link candidates are available to be connected.
• During pure connector creation on the Create subpanel, the tolerance is used for the link determination, but not necessarily stored on the connector unless the checkbox in front of the tolerance field is marked. In this way different tolerances can be used.
• The tolerance used during the realization process is always written to the connector.

Weld Angle-

• Define the distance between the normal projection and the quad direction.
• Principally it is allowed to define weld angles between 0 and 90 degree .If the value is set to 0 an internal thickness-based calculation is used. If the value is set to 0 and no thickness is defined the connector will fail.
• If the angle is created in the wrong direction, the seam can be reverted by enabling the reverse direction checkbox and performing a rerealization.

Figure 21-Weld Angle

 

Cap Angle-

Depending on the seam-quad type, the cap angle is measured differently.

• Measured between the normals of the cap element and the second-to-last element of the seam.
• Measured between the edge normals of the cap element and the second-to-last element of the seam in the plane of the opposite link.
• Cap angles are created by default. Clear this checkbox to remove cap angles and runoff angles.
• Cap angles between 0 and 45 degree are permitted, but be aware that larger values can lead to bad elements. The recommended value is 10 or smaller. Cap angles between 45 and 90 degree are permitted, but be aware that smaller values lead to bad elements. The recommended value is 75 degree and higher.

[Note:Only available for seam-quad (angled + capped + L) and seam-quad (angled + capped + T)]

Figure 22-Cap Angle

 

Runoff Angle-

Depending on the seam-quad type, the runoff angle is measured differently.

• Measured between the normals of the last and the second-to-last last element of the seam.
• Measured between the edge normals of the last and the second-to-last element of the seam in the plane of the opposite link.
• It is recommended to define the runoff angle between 0 to 10 degree.

Clearing the cap angles checkbox removes runoff angles, which are created by default.

Figure 23-Runoff Angle

 

Retain Nodes-

• Retain the position of the nodes when you create and realize a connector.

• To create a seam weld Go to seam weld panel >> Location >> Nodepath >> Connect What:Select the Component's called Front Truss_1 & Right Rail_2 >> Type:Seam-Quad(angled+capped+L) >> Create.
• Give the Property what you assigned to the component's and give the required values for the cap angle,runoff angle,weld angle.
• Give the required value for the search tolerance.We will be giving tolerance value as 10.This value is like a default value.this value is enough to give for this component.If there is a long space between the component's,then you have to give higher tolerance value or you have to be translating the component,If the connector's are not realizing or failing.

 

 

Figure 24-Connector Failed

When the connector is failing or not realizing,Remesh or rebuild mesh that region.Then the connector won't fail.Make sure whether you are giving a proper search tolerance and spacing.

Figure 25-After Remeshing.Now mesh is little bit proper.Now deploy a Connector.

 

 

Figure 26-Realized Connector

 

• Now after remeshing or after rebuilding the mesh,The connector is not failing and it is realized. 

Figure 27-Connector has been Deployed

 

 

Figure 28:Deployed Connector

 

2. Left_Rail_2 & Front_Truss_1-

 

• Similarly what you done for the previous model.Do the same thing for this component also.Just change the realization type ,that's it.
• The realization type is a description of the FE representation.
• To create a seam weld,Go to seam weld panel >> Location >> Nodepath >> Connect What:Select the Component's called Front Truss_1 & Right Rail_2 >> Type:Quads >> Create.

Mesh adjustment method-

• Quad transition-Create quads to serve as a transition.
• Remesh-Remesh linked entities to achieve better links.

Figure 29-With Quad Transition and Imprint

 

• Imprint-Merge two meshes from two different link entities to create a transition mesh that matches up well with both.
• Skip imprint-Close-set connectors' transition quads may overlap and interfere with each other, causing one or more realizations to fail.

Figure 30-With Quad Transition and Imprint,With Quad Transition and Skip Imprintand With Remesh

 

Figure 31-Deployed Connector in Left_Rail_2 & Front_Tuss_1

 

3.Front_truss_2, Front_truss_1 & Right_Rail_1-

• I'm doing spot weld for this component.I'm using realization type
• Spot welding is primarily used for joining parts that are normally up to 3 mm in thickness. Thickness of the parts to be welded should be equal or the ratio of thickness should be less than 3:1. The strength of the joint depends on the number and size of the welds. Spot-weld diameters range from 3 mm to 12.5 mm.
• Spot welding can be easily identified on many sheet metal goods, such as metal buckets. Aluminium alloys can be spot welded, but their much higher thermal conductivity and electrical conductivity requires higher welding currents.

• Spot Subpanel-Create and realize spot connectors.
• Create Subpanel-Create, but do not realize spot connectors.
• Realize Subpanel-Realize an existing spot connector (no creation or editing is possible).
• Edit Subpanel-Edit an existing spot connector.

Figure 32-Spot Sub Panel

Mesh Dependent / Mesh Independent-

• Determine whether the realizations require a node connection.

• Mesh independent-For a realization which does not need any node connection and the connection is primarily defined via a solver-specific card or the nodes which need to be connected are defined by just a cylinder.
• Mesh dependent-All other cases.

Adjust realization / Adjust mesh-

• Adjust realization-Adjust the realization itself, such as allowing non-normal realizations for the sake of locating nodes to create the realization.
• Adjust mesh-Adjust the mesh should locally (such as creating transition elements or remeshing) to ensure proper realization.

• Go to spot sub panel >> location >> nodes list >> by path >> connect what:components >> type:sealing >> dia:5 >> create.

Figure 33-Realized Spot Weld with Realization Type-Sealing

 

 4. Front_truss_2, Front_truss_1 & Left_Rail_1-

• Similarly,For this component i'm doing seam weld but with realization type of Hexa(Adhesive).
• Hexa Adhesive are used for the component's which are used to join them with industrial adhesives.
• Adhesives are mostly used in the fastening application's.

Figure 34-Industrial Adhesive

• Go to Seam Weld sub panel >> location >> nodes list >> by path >> connect what:components >> type:hexa adhesive >> hexa position >> midpoint/positive edge/negative edge/offset from edge >> create.
• Give a suitable search tolerance,strips,coat's,width to get connector realized.

Figure 35-Seam Sub Panel

 

• Width-Define the width of the continuous hexa weld in the direction perpendicular to the seam direction.

• Strips-Define the number of hexa elements required along the width.
• Coats-Defines the number of hexa elements required along the thickness.

 

Figure 36-Deployed Seam Connector

Figure 37-Realized Connector with Hexa Adhesive type

 

5.Rear_truss_2 & Right_Rail_2-

• For this component,I will be giving bolt connection.
• A bolt is a metal pin with a head formed at one end and the shank threaded at the other end so that nut can be received. Generally, the bolts are used to connect the pieces of metals by inserting them through the holes in the metals; at the threaded end, nuts should be tightened.

• Bolt Subpanel-Create and realize bolt connectors.
• Create Subpanel-Create, but do not realize bolt connectors.
• Realize Subpanel-Realize existing bolt connectors (no creation or editing possible).

• Now go to the bolt sub panel and create a bolt connector between the meshed component's.

Figure 38-Bolt Sub panel

• Bolt subpanel >> location >> nodes list >> connect what:components >> type:bolt (spider)>> create.
• If there is consider exsisiting hole only in the mesh depenedent drop down menu,The component should also have holes,If not change it to the if none create holes.Then the connector will be realized,It won't fail.

 

• Consider existing holes only/create hole, if none/use hole, if available/fill and remesh hole, if available-

• In the past a bolt realization always required a hole for each layer existent in the initial mesh. For 2D meshes this is not necessary anymore, because the imprint capability allows punching the needed holes into the mesh before the final realization is performed, so the mesh can be manipulated in a pre-step. This makes it possible to punch holes, to move holes, to close holes, to create washers, and so on.

Figure 39-Bolt Connector With Realization Type Bolt(Spider)

 

Figure 39:1-Bolt Connector With Realization Type Bolt(Spider)

 

Figure 40-Deployed Bolt Connector

 

6. Rear_truss_2 & Left_Rail_2-

 

• Similarly do the same thing for this component also what you done in the previous component.
• Here i'm changing the realization type to clip and then deploying a connector.
• Bolt subpanel >> location >> nodes list >> connect what:components >> type:bolt (spider)>> create.

Figure 41-Bolt Connector Sub Panel

• If there is consider exsisiting hole only in the mesh depenedent drop down menu,The component should also have holes,If not change it to the if none create holes.Then the connector will be realized,It won't fail.

 

• Consider existing holes only/create hole, if none/use hole, if available/fill and remesh hole, if available-

• In the past a bolt realization always required a hole for each layer existent in the initial mesh. For 2D meshes this is not necessary anymore, because the imprint capability allows punching the needed holes into the mesh before the final realization is performed, so the mesh can be manipulated in a pre-step. This makes it possible to punch holes, to move holes, to close holes, to create washers, and so on.

Figure 42-Bolt Connector

Figure 43-Bolt Connector With Realization Type Clip

 

7.Right_Rail_1 & Right_Rail_2-

• For this component,I'm deploying spot weld with a realization type rigid element's.
• In the Model browser, Component folder, right-click on Right_Rail_1 and isolate it and then show the Right_Rail_2 and start to deploy a connector betwenn two meshed component's.
• Open the Spot panel.
• Go to the spot subpanel.
• Set the location selector to points.
• Click node list >> by path
• Set the connect what selector to comps.
• Click comps and select Right_Rail_1 and Right_Rail_2.
• Set the num layers to total 2 or set to auto.
• Give appropriate search tolerance,spacing value and diameter and then click create.
• The connector will be created and realized.If not try to realize it.

Figure 44-Spot Sub Panel

 

 

Figure 45-Deployed Connector With Realization Type (Rigid Element's)

 

8. Left_Rail_1 & Left_Rail_2-

• For this component,I'm deploying spot weld with a realization type spring element's.
• In the Model browser, Component folder, right-click on Right_Rail_1 and isolate it and then show the Right_Rail_2 and start to deploy a connector betwenn two meshed component's.
• Open the Spot panel.
• Go to the spot subpanel.
• Set the location selector to points.
• Click node list >> by path
• Set the connect what selector to comps.
• Click comps and select Right_Rail_1 and Right_Rail_2.
• Set the num layers to total 2 or set to auto.
• Give appropriate search tolerance,spacing value and diameter and then click create.
• The connector will be created and realized.If not try to realize it.

 

 

Figure 46-Spot Sub Panel

 

 

Figure 45-Deployed Connector With Realization Type (Spring Element's)

 

9.The component's which have been left without deploying a connector's-

• Here While Checking the model,Reinf Plate is not connected with the component's and check for the other component's also which have not been connected.If not deploy the connector's between them.
• Now start to deploy the connector's between the component's.
• For one side.I'm deploying seam weld connector with realization type seam-quad(angled+capped+L).

Figure 46-Seam Sub Panel

 

• In the Model browser, Component folder,right click on the Reinf_Plate and select Make Current from the context menu and isolate that component and show the Front_Truss_1 and Front_Truss_2 Component and start meshing the component and deploy a connector between the component's.
• Open the Seam Panel.
• Go to the Seam subpanel.
• Set the location selector to node list.
• Click node list >> by path
• Set the connect what selector to comps and click comps.
• Select the components-Right_Rail_2 and Front Truss_1.
• Change Weld type to  Seam-Quad(angled+capped+L).
• Give a proper Spacing, Search Tolerance,Weld Angle,Cap Angle,Runoff Angle.

Figure 47-Seam Connector

 

Figure 48-Seam Connector With Realization Type Quad(angled+capped+L).

 

• For the other side,I'm deploying a seam connector witha realization type of Hexa(Adhesive).

• In the Model browser, Component folder,right click on the Reinf_Plate and select Make Current from the context menu and isolate that component and show the Front_Truss_1 and Front_Truss_2 Component and start meshing the component and deploy a connector between the component's.
• Open the Seam Panel.
• Go to the Seam subpanel.
• Set the location selector to node list.
• Click node list >> by path
• Set the connect what selector to comps and click comps.
• Select the components-Right_Rail_2 and Front Truss_1.
• Change Weld type to Hexa(Adhesive).
• Give a proper Spacing, Search Tolerance,Weld Angle,Cap Angle,Runoff Angle.

Figure 49-Seam Connector With Realization Type of Hexa(Adhesive)

 

Figure 50-Seam Connector With Realization Type of Hexa(Adhesive)

 

Reflecting the Connector's -

• Here the symmetric component's are Right_Rail_1,Right_Rail_2 and Left_Rail_1,Left_Rail_2.
• First Mesh the component's Right_Rail_1,Right_Rail_2.
• And then if there is disorted mesh,Try to remesh or rebuild the mesh to get proper mesh flow,then only you can deploy a connector ot it will fail.
• Then reflect the elements from Right_Rail_1,Right_Rail_2 to the Left_Rail_1,Left_Rail_2.
• You can deploy a connector,if the nodes are similar in both the component's or you can't deploy a connector,It may fail,So be aware of it.
• Now start to mesh the two component's Right_Rail_1,Right_Rail_2.

Figure 51-Before Remeshing

 

Figure 52-After Remeshing

 

• To reflect the element's from Right_Rail_1,Right_Rail_2 to the Left_Rail_1,Left_Rail_2 component's.
• Create a base node then only you can reflect the element's from Right_Rail_1,Right_Rail_2 to the Left_Rail_1,Left_Rail_2 component's.

 

• How to Create Base Node ?

• Go to Geometry >> Nodes >> Arc Centre >> Select the lines of circle >> Create.

Figure 53-Selecting the lines to create a node in centre

 

Figure 54-Node Created in Centre of Circle

• After Creating the nodes in Reinf Plate circle and Rear_Truss_2 circle.
• Create the node in between the two circles of Reinf Plate and Rear_Truss_2 using interpolate nodes.

Figure 55-Nodes Panel

 

Figure 56-Base Point Has Been Created

 

• Now reflect the element's to the Left_Rail_1,Left_Rail_2 component's.

Figure 57-Reflected Element's

 

• Now only create the spot connector on Right_Rail_1 component.
• Go to the spot connector panel and then go to the create panel which is only used to create a connector.
• Create a connector now by node list or node.

[Note:While creating connector,Make sure whether you are checking the retain node box.If not tick the check box of retain node,Then only you can realize a connector without failing or it will fail.]

• Spot  >> location:nodelist  >> by path  >> connect what: select the component's Right_Rail_1,Right_Rail_2 >> create.

Figure 58-Create Sub Panel

 

Figure 59-Connector Created

 

• Now reflect the connector to the Left_Rail_1.
• How to reflect a connector ?-Go to Tools >> reflect >> connectors >> select connector manually >> duplicate >> switch to x-axis >> select base node >> reflect.

Figure 60-Reflect Panel

 

Figure 61-Connector has been reflected

• Now realize the connector on Right_Rail_1,Right_Rail_2 component's.
• And realize the connector on Left_Rail_1,Left_Rail_2 component's.

• How to realize a connector ?

Figure 62-Realize Sub Panel

• Go to realize sub panel  >> select a connector  >> type:rigid  >> give appropriate search tolerance,diameter  >> realize.
• While realizing the connector on Right_Rail_1,Right_Rail_2 component's.Make sure are giving a realization type-rigid element's.

Figure 63-Realized Connector With Rigid Element Type

 

Figure 64-Proper Representation of Realized Connector With Rigid Element Type

• Now Realize the connector on Left_Rail_1,Left_Rail_2 component.
• While realizing the connector on Left_Rail_1,Left_Rail_2 component's.Make sure are giving a realization type-spring(ELAS1).

 

Figure 65-Realized Connector With Spring(CELAS1) Element Type

 

Figure 66-Proper Representation of Realized Connector With Spring(CELAS1) Element Type

 

Figure 67-Connector's on Right_Rail_1,Right_Rail_2 to the Left_Rail_1,Left_Rail_2 component's has been successfully realized.

• Check the status of the connector's whether they are realized or unrealized or failed.

• Here every component's has been realized.

 

Figure 68-Realized Connector's

 

Figure 69-No Unrealized Connector's

 

Figure 70-No Failed Connector's

 

Figure 71-No Modified Connector's

 

Connector's File's[Master Connector File,.mcf,.xml]-

• These master connector files are used to import the connector's into solver desk's or another pre-processing softwares like abaqus etc.

How to export connector's ?

Figure 72-Connector's Created to Export

 

Figure 72-Export Panel

• Here select export connector's and select the file type as .xml and give a file name & save the connector file where you want.

How to Import connector's ?

Figure 73-Now Importing connector's into this component

 

• After importing connector's,The imported connector's will lie on the same component,with a same dimension.with a same particular region.

Figure 74-Import Panel

Figure 75-Connector File

• After Importing the connector's to the component's.Go and realize the connector's.While realizing the connector's,Make sure to change the realization type.

Figure 76-Imported Connector's

Figure 77-Connector's has been realized after importing them.

Final CAD Model Image -

• After Deploying Connector's to the Component's.

Figure 78-Right_Rail_2 & Front_truss_1

 

Figure 79-Left_Rail_2 & Front_truss_1

 

Figure 80-Front_truss_2, Front_truss_1 & Right_Rail_1

 

Figure 81-Front_truss_2, Front_truss_1 & Left_Rail_1

 

Figure 82-Rear_truss_2 & Left_Rail_2

 

Figure 83-Right_Rail_1 & Right_Rail_2

 

Figure 84-Left_Rail_1 & Left_Rail_2

 

Figure 85-Rest of the Component's

 

Figure 86-Successfully Deployed Connector's

 

Figure 87-Proper Representation of Connector's

 

Result -

• Hence the given component has been meshed with the target element size of 5 unit's.
• Hence the connector's has been deployed to the component's without any glith.
• Hence the connector's with a proper realization type has been deployed successfully.

Conclusion and Learning Outcome -

• The Assembly Frame has been meshed successfully.
• All the connectors has been deployed efficaciously according to the realization type given in the challenge.

• In this Week 9 Challenge,I came to know how to deploy a connector with a suitable realization type.
• How to debug a connector ,If it is unrealized,If it is failing.
• How to create a connecotor in particular region and reflect a connector.
• To import and export master connection files like MCF (master connectors file).