AIM:
To the given model make a 2D meshing as per given quality criteria checck the elements clear geometry errors.Make posssible connections as per required position with different joining methods.
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
OBJECTIVES:
In this model just analysing the connections for the design to make different connections as on possible like SPOT WELD,SEAM WELD,BOLT CONNECTION,ADHESIVE CONNECTIONS,RIGID CONNECTIONS etc are checking the geometry with connecting with suitable and as per the question.
given connections on the proper meshing ang are done with the following procedures.
Create connector and Attach the various parts of the given model
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. Rest all the component left Join them with suitable connectors
PROCEDURE:
*Open hypermesh software and open the downloaded work model geometry clean up and mid surfaces are done with the downloaded model thats why meshing the model with given criteria with minimum length,maximum length,warpage,element size etc put.
*Mesh with the 2D/AUTOMESH/SIZE AND BIAS OPTION/SELECT OBJECT/CREATE.For checking the meshing errors and rebuild then geometry clean up done with the proper element cleaning tools.
*Now make proper connection with suitable methods first of check it proper.
1.Right_Rail_2 & Front_truss_1:- Seam-Quad(angled+capped+L):
*Here rigth rail 2 and front truss 1 connected with seam quad connection are selected with 1D OR 2D/CONNECTORS/SELECT SEAM WELD/BY NODE SELECTION /RETAIN POINS SELECT/SPACING PUT 5.
*Select the object where the surfaces are make connection needed put the option SEAM QUAD ANGLED+CAPPED+L.
*Provide tolerence of 10/weld angle/cap angle/quad transition/create/realize
2. LEFT RAIL 2 & FRONT TRUSS 1:
Quad elements:The make the connections and are checked with quad transition option on the seam connection on the and create it are shown in figure.
3.FRONT TRUSS2, FRONT TRUSS1 & RIGTH RAIL1:
Spot weld with 2 Layers and 5 mm Diameter:
*Isolate the 3 parts only options as per question left take the components and rigth click and made isolate only.
*Now 1D/2D CONNECTORS/SPOT/SELECT LOCATION/SELECT COMPONENETS/PUT DIA 5MM/TOLERENCE/THEN CREATE.
*Check realization the nodes are greeen it is not failed otherwise check it again and create.
4. FRONT TRUSS 2, FRONT TRUSS1 & LEFT RAIL1:
Hexa (Adhesive):
Made the connection with hexa adhesive are connections with seam/type of connection select to hexa adhesive ang select the nodes and parts are select make the tolerence and then put the create option and realize connection are proper.
5. REAR TRUSS2 & RIGTH RAIL2
6. REAR TRUSS2 & LEFT RAIL2
Bolt Connector:
*Bolt connection made by same process with the CONNECTION/BOLT/LOCATION NODES/COMPONENETS SELECT/TOLLERENCE VALUE/CREATE HOLE IF NOT/TYPE IS PROVIDE BOLT CONNECTION/CREATE
*Now realize option use to check the failed or not then if any correction made it proper.
7. RIGTH RAIL1 & RIGTH RAIL_2:- Spot-weld with Rigid Elements
8. LEFT RAIL1 & LEFT RAIL2:- Spot-weld with Spring Elements
These connections made with weld options on spot and change type for seventh is rigid elements and eigth is spring elements should be put to it and there is the coats are put to it become zero and check the whole element criteria and create it
RESULT:
*Analysed and find it out the element meshing for the given componenet.
*Create the connections for the element and work it out the quality parameters for the element study about the given connections and make it understand with the different portions.
