Week 4- Challenge

AIM 

   To mesh the given component and to create 1D elements with the provided cross-sections and DOFs on the given component. 

PROCEDURE

• Initially the given component is imported in IGES formate.
• midsurface is extracted in both the brackets by using the midsurface option in Geometry.
• Solid part is deleted by using deleted option.only midsurface remains.
• The material is created in the feature tree and renamed as Steel with the card image as MAT1.
• Similarly 2 properties are created and rename as Bracket 1 and Bracket 2.
• The material and thickness is assined to Bracket 1,2.
• Using the washer split option in quick edit in geometry section, the washer split is provided with an offset value of 5 to all the holes in the model.
• Mess the component value of 5mm by automess option.
• Now the surface of the 2 brackets are hidden and the RBE2 RBE3 links are created under 1D section.
• The links are made over the holes and the holes are named as a,b,c,d & e in the model.
• For creating a RBE2 link in hole a, rigids option is slected and the node option is customized as calculate nodes with multiple nodes and the nodes are selected by path. The DOF for this link is with only the translational DOF are constrained and the RBE2 link is created.
• Similarly RBE2 link is created in the d,e holes.
• In hole b, a RBE3 link with all DOF constrained is created using the rbe3 option in 1D section and the nodes are selected by path.
• Similarly, a RBE3 link with only x & y DOFs constrained is created for hole c.
• Hyperbeam option is selected and in standard section-hypermesh the 2 required cross sections such as thinwalled box and standard I-section are created under the given dimensions and the remaining 1 cross section which is cross is created in standard section-optistruct under the given dimensions.

• Rod element:

                      BOX- Dimension a= 12 mm

                                dimension b=10 mm

                                Thickness t= 0.75 mm

   Beam element:- 

                       I Section- Dimension a= 8 mm

                                       Dimension b= 10 mm

                                       Dimension c= 8.5 mm

                                       Thickness t1= 0.75 mm

                                       Thickness t2= .6 mm

                                       Thickness t3= .6 mm

   Bar element:-  

                           X section- Dimension DIM1= 5 mm

                                               Thickness DIM2= 1.2 mm

                                               Dimension DIM3= 10 mm

                                               Thickness DIM4= 1.2mm

   

• The rod element is created by selecting the nodes of respective link as shown in image using the rod option in 1D section.
• Similarly beam element and bar elements are created.
• Then assign properties for all element.
• The springs are added in between the 2 brackets in position f.

CONCLUSION :

    Thus the given model is meshed with the given element size and the given 1D elements are created under the given parameters successfully.