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vishal vaghela

connectivity of elements

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i have model I beam for the topology optimization problem in which web is considered as a design space & both flanges are in the Non design space. UDL loading is applied on top flanges. model details as follows:

1. loading condition: UDL 

2. boundary condition : simply supported beam

3. design space: WEB 

in the model, flanges & web (Geometry & mesh elements) are in different components. so how i can connect the flanges element to the WEB elements for the transfer of stress and strain ? 

 

beam model.JPG

i beam DND_2.hm

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Welcome,

 

node-to-node connectivity is preferred (edges panel (F3)>equivalence).

 

Tie or freeze contact can be used to connect nonmatching mesh. Use auto-contact in the tools>contact browser to automatically create contacts. 

 

 

 

i beam DND_2_edit.hm

 

One element through the thickness is not recommended for bending problems. Remeshing the flanges with many elements through-thickness might lead to bad element quality (aspect ratio) or an excessive number of elements (bad computational efficiency). Given the web and flanges are relatively thin they could be meshed with shell elements instead, which should also enable node-to-node connectivity.

https://knowledge.autodesk.com/support/inventor-nastran/troubleshooting/caas/sfdcarticles/sfdcarticles/Thin-parts-can-have-inaccurate-results-when-using-solid-elements.html

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