Project 2 - Meshing on the Rear Suspension Assembly

Shell and Solid Meshing of Suspension Assembly

 

Aim -

• To perform shell and solid meshing of an rear suspension assembly.
• To deploy connections in necessary regions.

Objective -

• To do geometric cleanup on the component.
• To extract a mid surface for the components,If the thickness is less than 5mm.
• Giving appropriate mesh parameters and quality criteria for the components.
• Performing shell mesh with the mixed element type for the components having less than 5mm thickness.
• Performing shell mesh with the tria element type and creating a volume mesh for the components having more than 5mm thickness.
• Deploying bolt and seam weld connections in required regions.
• Representing coil spring with CBAR 1D Element.
• Performing symmetric operation.

Theoretical FrameWork -

Suspension-

• Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two. 
• Suspension systems must support both road holding/handling and ride quality, which are at odds with each other.
• The tuning of suspensions involves finding the right compromise. It is important for the suspension to keep the road wheel in contact with the road surface as much as possible, because all the road or ground forces acting on the vehicle do so through the contact patches of the tires.
• The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different.

Rear Suspension -

• The rear suspension of a vehicle performs the same general function as front suspension, but the specific construction is typically quite different.The suspension must be able to handle the transfer of engine torque effectively to the wheels while resisting the rotational force of the driveshaft.

 

Figure 1-Rear Suspension.

 

Figure 2-Suspension in Car.

 

Figure 3-Suspension.

 

Figure 4-Components Names in Suspension.

 

Procedure - 

 

Figure 5-Procedure.

 

Phase 1-Importing the CAD Model 

• Hence we are importing a given CAD geometry into the ANSA.
• There are file formates like IGES,STEP,Parasolid where we can import these file formats into any CAD,CAE Softwares.
• In ANSA we can import all the CAD Software file formates like 
  

 

Figure 6-Supported File Formats.

• IGES [Initial Graphics Exchange Specification].
• STEP [Standard for the Exchange of Product Model Data].
• Solidworks.
• Catia V5,V6
• Simens NX CAD
• Inventor
• Creo
• Solid Edge
• Rhinoceros 3D
• IGES,STEP,These two are standard file formats which are mostly used in industries.But now a days in industries,they are aslo using parasolid file format.
• Now import the model into ANSA GUI.The Model given to us is in STEP File Format.
• Go to Main Pull Down Menus >> File >> Open.

 

Figure 7-Importing/Opening the Model.

 

 

Figure 8-Model Imported into GUI.

• Here,after importing the model into GUI.
• We can see the macros are not connected and there are free edges present in the model.
• To get rid off this or to get equivalence,Do topo on the model by window selection.
• To do Topo,Go to Topo Module >> Faces >> Topo >> Window Selection.

 

Figure 9-Topo Module.

• After doing topological clean up,you can see the model without free edges shown in figure 10.

 

Figure 10-After Doing Topo.

 

Phase 2-Initial Check

• 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.

• By assessing the Rear Suspension Assembly model there are some errors in the geometry.
• If there are any unnecessary properties in the property browser,Delete them and then proceed.
• We have to do some geometry clean up on the model,Cause there will be some minimal errors in the model.To solve that we should do some geometry clean up on the model.

Phase 3-Geometric Clean Up on the Parent Component

• Here we will be doing some geometry checks on the parent component.
• We have to fix the geometrical errors in the parent component,Then only we will be able to extract auto midsurface using skinoffset.
• To fix the geometry checks go to Tool Bar >> Checks >> Geometry.

Step-1

 

Figure 11-Checks Manager.

• After clicking on the check geometry,The geometric errors will be displayed.
• We can fix that geometric errors by manually or automatically.
• For this hood model,We can fix that errors automatically by auto fix.
• While checking for errors in the geometry make sure to check this options in the checks manager.

Step-2

Figure 11-Check Geometry Options.

 

Terminologies for Geomerty Options -

• Unchecked faces - Faces that failed for the shadow operation. 
• Needle Faces - Degenerated faces are faces that have their opposite CONS coincident. 
• Collapsed Cons - A CONS where it's starting and ending position coincide.
• Triple Cons - Areas where three or more faces have a common boundary.
• Cracks - Red CONS at inner areas.[Holes are excluded].
• Single Bounds - Red CONs at outer areas.[Holes included].

Step-3

Figure 12-ANSA Checks Manager.

Step-4

Figure 13-Geometric Errors.

• Here in the Checks window all problems are reported with red color.
• Under Description column the kind of problem is explained.
• Focus functions are available in order to isolate geometrical problems and handle them easier.Select to fix all or specific reported problems by pressing right mouse button on the header of the list or one or more highlighted problems.

Step-5

Figure 14-Fixing Errors.

 

Figure 15-Errors Fixed.

 

• [Note: All problems except triple CONS can be fixed by the automatic fixing.]
• [Note: Right mouse clicking on Check Geometry line, performs an action to all listed problems.In case where not all problems are fixed automatically, retry or proceed to fix them manually.For this component no need to fix manually because all the errors have been fixed with auto fix.]

 

• Similarly do the same process for the Outer Extract,Hinge Reinforcement Extract and Latch Reinforcement Extract.
• Here for the Outer Extract we have toggle the lines in the hemming regions because that hemming lines will be failing for minimum length,So we have to toggle that lines while meshing on it.

3:1 Assign Different PID'S for the Different Parts-

• Here create anew PID'S for the suspension assembly.
• In suspnsion assembly,ther are many components,Assign pids for that components using Set PID tool from faces.
• To create PID,Go to Topo Module >> Faces >> Set PID.

 

Figure 16-Selecting the component by using inot tool.

 

 

Figure 17-Creating PID.

 

Figure 18-PID Created.

• Simillarly do the same thing for all the components. 

 

Figure 19-PID'S created for all the components in suspension assembly.

 

Figure 20-Components of Suspension Assembly.

 

 

Figure 21-Components of Suspension Assembly.

 

Figure 22-Every component have been assigned to the different PID.

 

Phase 4-MidSurface Generation

• Before extracting the mid surface for the components we need to give perimeter and macros length on the components while extracting mid surface.
• This makes the component to get a desired shape,So it will be easy to extarct a midsurface without any errors.The possiblities of errors will be less.
• To give perimieters and macros length on the componets,
• Go to Mesh Module >> Perimeters >> Length.

 

Figure 23-Permieter Length Tool.

• Here we will be extracting the mid surface for only two components called Bracket and Spring_Lower_Insulator.
• Before extracting ,id surface for these two components.Give perimeter length for these two components.

Figure 24-Selecting the cons to give perimeter length.

 

Figure 25-Enter the Value as 1 according to the component size.

 

• Simillarly do the same thing for the perimeters also.
• Mesh Module >> Perimeters >> Length.
• This tool defines the element length on selected perimeter segments or macro areas.
• The element length may be explicitly declared or may be declared as a factor to be multiplied by the existing element length.

• We can Extract Mid Surface by Two Methods called
• Using Skin MidSurface Option in Faces Panel in Topo Module.
• Using Offset Tool in Faces.
• But for this component,We will be extracting midsurface by using skin.

 

4:1 Why to Extract Mid Surface ?

• Before extracting the mid surface for every component,We should measure the thickness of the component and then we have to proceed to extract the mid surface.
• If the component thickness is less than 5mm then we will come to know it is a sheet metal component.
• For sheet metal and plastic components,Mid Surface extraction is must.
• Here for these two components,thickness is less than 5mm,so extrcat a mid surface for these two components.

 

Figure 26-Thickness less than 5mm for these two components.

 

4:2 Generate Mid Surface

• To generate midsurface 
• Go to Topo Module >> Faces >> Mid Surface >> Skin >> Selct the Face >> Give Offset Value and Direction.
• This tool turns the solid description of a thin part into thin shell description by isolating the outer or inner skin of the solid description. 
• This Skin MidSurface tool works for only the sheetmetal components which are pressed and stamped.
• It works for the components which have uniform thickness.
• It dosen't works for the components which have varying thickness.

[Note:While extracting the midsurface,make sure to uncheck delete original faces option.]

 

 

Figure 27-Mid Surface Extracted for the Bracket and Spring Insulator.

 

Phase 5-2D and 3D Meshing

2D Meshing-

• Once geometry cleanup is completed (e.g. surfaces are stitched together — no unwanted free surface edges inside the geometry), meshing is next.

Some rules of thumb when meshing:

• The mesh should look rather smooth and regular (keep in mind that the analysis is based on your mesh and the mesh quality is key.
• Use the simplest element type suited for the problem.
• Start with a coarse mesh and understand the modeling results; then use a finer mesh if needed.
• Try to keep mesh related uncertainties to a minimum if possible. Keep it simple as it can get more complicated on its own.

 

Figure 28-2D Element Shapes.

 

• Different Element Type Options for Shell Meshing:

Figure 29-Element Types.

 

5:1 Enter the Parameter quality criteria what they given for the Hood Model

• Select and set the respective quality criteria for the corresponding elements to perform the Quality Checks (Hidden Mode). Also set the general presentation settings concerning the ANSA workspace
• Use the F11 key to open the Quality Criteria and Presentation Parameters management window (F11 Menu).
• Tool Bar >> Quality Criteria (F11) >> Enter the Values.
• Tool Bar >> Parameter >> Enter the Values.

 

Target/Average Length- 4 Units

Sl. No.	Quality Criteria	Function / Definition	Value
1	Aspect Ratio Ratio	Ratio of Max. Length by Min. Length	3
2	Skewness	Deviation from the ideal shape	45
3	Warping	Angle between the 2 planes of the same element(Quad)	15
4	Jacobian	Transformation of Coordinate System.	0.7
5	Min. Length	Shortest length of any given element	2
6	Max. Length	Longest length of any given element	6
7	Min angle Quad	Minimum angle in any given Quad element	45
8	Max angle Quad	Maximum angle in any given Quad element	135
9	Min angle Tria	Minimum angle in any given Tria element	30
10	Max angle Tria	Maximum angle in any given Tria element	120
11	Tria %	Percentage of Tria on any meshed surface	15

 

 

Figure 30-Quality Criteria Panel.

 

• Now enter the Mesh Parameters
• Go to Tool Bar >> Mesh Parameters >> Enter the Values.

 

Figure 31-Mesh Parameteres Panel.

[Note : Save the Mesh Parameter and Criteria file for that component and save it in any other drives,Cause whenever we open that component,we can open the Element Criteria file and Parameter file,So criteria and mesh paremeters will be applied habitually instead of entering again.]

 

1) Aspect Ratio

• This is the ratio of the longest edge of an element to either its shortest edge or the shortest distance from a corner node to the
  opposing edge ("height to closest node").

 

Figure 32-Aspect Ratio Calculation.

 

2) Skewness

• Skew of triangular elements is calculated by finding the minimum angle between the vector from each node to the opposing
  mid-side, and the vector between the two adjacent mid-sides at each node of the element. 
• For Skewness: Ideal=0,But < 45 is acceptable.

 

 

Figure 33-Skew Angle.

 

3) Warping

• This is the amount by which an element (or in the case of solid elements, an element face) deviates from being planar. Since
  three points define a plane, this check only applies to quads. The quad is divided into two trias along its diagonal, and the angle
  between the trias’ normals is measured.

Figure 34-Warp Angle.

 

4) Taper

• Taper ratio for the quadrilateral element is defined by first finding the area of the triangle formed at each corner grid point.These
  areas are then compared to one half of the area of the quadrilateral.                                          

 

 

Figure 35-Taper Angle.

 

5) Minimum and Maximum Length

• The shortest distance from a corner node to its opposing edge (or face, in the case of tetra elements) referred to as height to
  closest node. 

 

5:2 Conditions to be followed while meshing

• Feature Capturing
  

• Feature capturing is must while meshing.All the nodes must be connected to the shared edges.

• Tria Management
  

• Avoig higher number of trias.
  
  

• Important Parameter's in tria management
  

1. No trias in corner's or edge's.
2. No opposite trias.
3. No back to back trias.
4. No trias in fillets or hemmings(We can have minimum but anyhow try to avoid).
5. No rotational quads.
6. No trias should share a boundary with feature line.
7. Connectivity between elements.
8. Split and perform the mesh.
9. Use mixed type mesh for irregular shaped surfaces and quads only for rectangular/square surfaces(Opposite sides should be parallel and equal).

5:3 Begin meshing the surfaces

• Start meshing from the centre regions or from least free edges.You will get proper mesh density and proper mesh flow.

Why Meshing is Needed ?

• Finite Element Method reduces the degrees of freedom from infinite to finite with the help of discretization or meshing (nodes and elements). One of the purposes of meshing is to actually make the problem solvable using Finite Element. By meshing, you break up the domain into pieces, each piece representing an element.

How to Begin Mesh ?

• Start meshing form the least free edges,Like start meshing from the center.
• It will be easy to get proper mesh flow and we will get uniform mesh density.
• Don't mesh form the edges,It will be difficult and you will get many error,So start meshing from the center.
• Choose the element type while meshing.
• For this component we will be using mixed element type and working on it.
• We can also quads element type.This type can be used when we have rectangular surface.
• We can use Tria Element type.This type can be used for 3d tetra meshing.

Start Meshing

• To begin mesh,Switch form topo module to the mesh module.
• Before Meshing set the perimeter and macro length to the component.
• Here set the perimeter and macro length as target element size.
• It will split according to the target element size,So it will be easy for us to mesh.
• To Mesh >> Go to Mesh Module >> Mesh Generation >> Best Mesh >> Select the area.
• While Meshing Switch from shaded mode to the hidden mode,Then only we will be able to see the visibility  element quality.

Figure 36-Drawing Styles Panel.

 

 

Figure 37-Meshed Bracket Component.

 

Figure 38-Meshed Spring Lower Insulator.

 

5:3 3D Meshing -

Intro to 3D Meshing and Some Terminologie's -

3D Element Types-

Figure 39-3D Element Types

[Note:Penta and Pyramid element's are rarely used.But parabolic element's are very very rare element's only used for 1 or 2 specific types of condition's.]

 

Shell Element-

Figure 40-Shell Element's

 

Example of shell elements (CTRIA3, elements (CTRIA3, CQUAD4, CTRIA6, CTRIA6, CQUAD8)

• First Order 4 or 3 nodes.
• Second Order 6 or 8 nodes.
• DOFs 6 degrees of freedom per node.

Solid Element-

 

Figure 41-Solid Element's

 

Example of tetrahedron tetrahedron, pyramid, penta and hexa elements elements

• First Order 4, 5, 6, 8 nodes.
• Second Order 8, 12, 15, 20 nodes.
• DOFs 3 degrees of freedom per node.

Two Types of Solid Meshing -

1) Hexa Mesh [Structured Mesh]

• Structured meshes are meshes with implicit connectivity whose structure allows for easy identification of elements and nodes. Often structured meshes have orthogonal quadrilateral (2D) or hexahedral (3D) elements.
• Structured meshes allow programmers to enumerate the nodes in such a way that any adjacent elements or nodes can be called upon without knowing any connectivity information.
• It is also possible to access coordinates easily because the size of each element does not vary element to element.

 

Figure 42-Structured Mesh.

 

2) Tetra Mesh [UnStructured Mesh]

• Unstructured meshes are meshes with general connectivity (GCON) whose structure is arbitrary and therefore the connectivity of elements must be defined and stored.
• GCON element types are non-orthogonal, such as triangles (2D) and tetrahedra (3D).
• Unstructured meshes require programmers to map more data to each node, such as adjacency lists and coordinate lists.

 

Figure 43-UnStructured Mesh.

 

Figure 44-UnStructured and Structured Mesh.

 

Structured mesh advantages -

• Memory efficient
• Fast to Solve

Unstructured mesh advantages -

• Complex geometries easier to mesh.
• Arbitrary positions.

Structured mesh disadvantages -

• Angled and curved geometries are approximated (leads to stair stepping).

Unstructured mesh disadvantages -

• Greater memory requirement.
• Slower to solve.

Different meshes -

 

Figure 45-Different Meshes.

 

 

5:4 What is 3D Mesh ?

• A 3D mesh consists of finite elements with each element defined with specific physical properties.
• This 3D mesh is used for analysis, in various domains such as static structural analysis, dynamic modal analysis, thermodynamic analysis, etc.,
• Any 3D modelled object with a specific volume and dimension can be 'meshed' with a finite number of elements that helps in solving for accuracy in pin-pointing regions of strain at a higher resolution.
• We will do 3D Mesh for the components,whose thickness have more than 8mm.
• Before generating a mesh,give the mesh parameters and quality criteria.

 5:5 3D Meshing [Shell Mesh] of Tyre and Rim

• First give the mesh parameters and quality criteria for the tyre and mesh and then start to do shell mesh.

 

 

Figure 46-Mesh Parameters.

 

Figure 47-Quality Criteria.

 

[Note : Save the Mesh Parameter and Criteria file for that component and save it in any other drives,Cause whenever we open that component,we can open the Element Criteria file and Parameter file,So criteria and mesh paremeters will be applied habitually instead of entering again.]

 

• In ANSA we can only use one method called 2D to 3D Mesh Conversion.

• Start Meshing

  • To begin mesh,Switch form topo module to the mesh module.
  • Before Meshing set the perimeter and macro length to the component.
  • Here set the perimeter and macro length as target element size.
  • It will split according to the target element size,So it will be easy for us to mesh.
  • To Mesh >> Go to Mesh Module >> Mesh Generation >> Spot Mesh >> Select the area.
  • While Meshing Switch from shaded mode to the hidden mode,Then only we will be able to see the visibility  element quality.

  

  Figure 45-Drawing Styles Panel.

 1) Tyre [Shell Mesh]

• Now while meshing the component.
• Set the perimeter and macro length as target element size given,So it will split the hot points according to that length and it will be easy for us to mesh.

 

Figure 46-Giving Length Parameters.

• After giving length parameters
• Start meshing the component,In curved regions,Use element type as ortho tria and mesh,Cause it gives a proper feature capturing,So use ortho tria as element type in curved regions.
• In flat regions,Use normal tria as element type and mesh.

 

Figure 47-Mesh Module.

 

Figure 48-Ortho Tria in Curved Regions.

 

• In some cases,Ortho tria won't work in some curved regions,The elements will be failing,Cause the minimum length is 5 for this component,So try to use element type as normal tria for this component.

 

Figure 49-Normal Trias.

• Here the elements are not failing,So its better to go with normal tria as element type and mesh the regions.

 

Figure 50-Extracting Mid Line.

 

Figure 51-Mid Line Extracted.

 

Figure 52-Shell Mesh.

Step-1

Figure 53-Dents and Raised Edges.

 

• To fix this dents and raised edges,I have described below in the following figures 54,55,56,57,58.

Step-2

Figure 54-Creating lines by using edge to perimeter tool from macros panel.

Step-3

Figure 55-Lines Created.

Step-4

Figure 56-Mesh is Erased.

Step-5

Figure 57-No Dents and Raised Edges after meshing with ortho tria as element type.[Make sure to create a cut by using edge to perimeter tool and then mesh].

Step-6

Figure 58-No Dents and Raised Edges.

 

Figure 59-Raised Edges.

• To fix these raised edges,Use Align tool from the grids panel.
• To use align tool,Go to Mesh Module >> Grids >> Align >> Source Nodes >> Target Nodes.

Step-1

Figure 60-Selecting the Source Node.

Step-2

Figure 61-Selecting the Target Nodes.

Step-3

Figure 62-Aligned the Nodes to get rid off raised edges.

• After shell mesh,Create a volume mesh on the component.
• Go to Volume Mesh Module >> Define >> Manual >> Window Selection >> Create New PSolid.

 

Figure 63-Volume Mesh Module.

Step-1

Figure 64-Window Slection to create a volume.

Step-2

Figure 65-Creating New Property Id.

Step-3

Figure 66-Property ID Created.

Step-4

Figure 67-ReMesh.

Step-5

Figure 68-Define the Mesh by Volume Type.

Step-6 

Figure 69-Mesh Defined.

 

Figure 70-Section View.

• After creating volume tetramesh,check for the elements failing for tet collapse.
• Here there no elements failing for tet collapse.

4:2 Check whether the element's are failing for Tet Collapse

• In 2D Tetramesh,We will be checking whether element's are failing  for only min and max length.
• In 3D Tetramesh,We will be checking whether element's are failing for only tetcollapse.

What is Tet Collapse ?

• Tet Collapse can be calculated by measuring the distance of a node from the opposite face, then each of the four values will be divided by the Square root of the opposite face's area. The minimum of four resulting values is then normalized by dividing it by 1.24.

Figure 71-Tet Collapse

 

• Tetra elements whose collapse value falls below the value specified are highlighted when the tetra collapse function is selected.These elements remain highlighted until the Check Elems panel is exited.
• Tetra collapse calculation: At each of the four nodes of the tetra, the distance from the node to the opposite side of the element is divided by the square root of the area of the opposite side. The minimum value found is normalized by dividing it by 1.24, and then reported. As the tetra collapses, this value approaches 0.0. For a perfect tetra, this value is 1.0.

Figure 72-Tet Collapse Formula

Step-1

 

Figure 73-Tet Collapse.

 

• To fix tet collapse,Go to Volume Mesh Module >> Improve >> Fix Quality >> Visible >> Middle Click.
• Simillarly do the same process for all the components.

Step-2

Figure 74-Fixing Tet Collapse.

Step-3

Figure 75-Tet Collapse Fixed.

Step-4

 

Figure 76-No Off Elements for Tet Collapse.

Figure 77-Shell Mesh of all the Components.

 

Figure 78-Shell Mesh of all the Components.

 

Figure 79-Shell Mesh of Entire Assembly.

 

Figure 80-Volume Mesh of Tyre and Rim.

 

 

Figure 81-Volume Mesh of Suspension Assembly.

 

Figure 82-Volume Mesh of Rear Suspension Assembly.

 

Representation of Coil Spring with 1D Bar Element-

• To represent the coil spring with 1D element,I have described below in the following figures 83 and 84,Have a look !

 

Figure 83-Creating Curve and COG Point.

 

Figure 84-Representing Coil Spring with 1D Element.

 

Figure 85-Representation of Coil Spring.

 

Deploying Connectors in Required Regions -

Creating RBE2 Elements in Required Regions -

• RBE2 Element - The RBAR or RBE2 element can be used for connecting two nodes to model a 'rigid' welded type connection, with all 6 DOFs, or a pinned connection with 3 translational DOFs. The RBE2 element can also be used to model a wagon wheel type connection between the independent and the dependent nodes.
• The RBE2 Element represents the bolts and rivets,so that's why we are using RBE2 Elements to represent the bolts.
• To create RBE2 Elements,Go to Nastran Deck Module >> Elements >> Many Nodes.
• We can create RBE2 Elements by two methods called Cluster and 3D Point.

 

Figure 86-Elements Nastran Deck.

 

 

Figure 87-RBE2 Elements Created to Represent Bolt Connections.

 

Creating Cluster RBE2 Elements -

• To create RBE2 Elements,Go to Nastran Deck Module >> Elements >> Many Nodes.
• First,Select the slave nodes which is dependent nodes and then followingly click the middle mouse buttom, it will automatically find the master location & create the node by itself which is nothing but a independent node.
• If we use this method, it will have multiple number of dependent nodes and only one independent node.

 

Figure 88-Cluster RBE2 Elements Created to Represent Bolt Connections.

Deploying Seam Weld Connection -

• To deploy a Spot Weld connection,First create a curve where you want to deploy a connection.
• To create a curve,Go to Mesh Module >> Perimeters >> Feature Curves >> Select the element edges >> Middle Click.
• Convert the curves to the seam line curve to deploy a connection.
• To convert,Go to >> Utilities >> Convert >> Spot Line.

 

Figure 89-Perimeters Panel.

 

Figure 90-Curve Created.

 

Figure 91-Convert Tool.

 

Figure 92-Converting into Seam Line.

 

Figure 93-Curve Converted into Seam Line.

 

 

Figure 94-Selecting Seam Line to Deploy Seam Weld Connection.

 

Figure 95-Connection Manager.

 

Figure 96-Deployed Seam Weld Connection.

 

 

Figure 97-Deployed Connections in Necessary Regions.

 

Performing Symmetry Operation -

• Now reflect the entities to other side using transform tool.
• To Reflect,Go to Utilities Panel >> Transform >> Copy.

 

Figure 98-Window Selection to Reflect.

 

Figure 99-Reflecting the Entities to Other Side.

 

Figure 100-Reflected Entities to Other Side.

 

Final CAD Model Images -

 

Figure 101-Isometric View.

 

Figure 102-Front View.

 

Figure 103-Side View.

Figure 104-Final CAD Model Image.

 

Result -

• Hence TetraMesh Generation Method-2D to 3D Conversion for Rear Suspension Assembly component with the following quality criteria has been done.
• Hence there are no surface deformations in the geometry.
• A well connectivity has been established between the surfaces.
• The features have been captured properly.
• A good mesh flow have been achieved.
• Hence the Model has been reflected to the other side successfully.
• Hence the connection has been deployed in required regions.
• Hence Mid Surface and Shell Mesh has been performed for the bracket and lower spring insulator component successfully.

Learning Outcome -

• In this Project 2 Rear Suspension Assembly Model Challenge,I came to know
• How to 3D mesh a component properly without dent's,kink's and raised edges.
• How to create a volume tetra mesh for the components.
• How to generate a proper mesh flow without kinks,raised edges and dent's.
• How to fix the elements failing for the tet collapse.