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Boundary Load Change Having No Effect.

Posted 24 nov 2015, 13:07 GMT-5 Geometry, Structural Mechanics Version 5.1 4 Replies

Waseem Aldeek
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Hi there,

I am new to COMSOL and still learning it's functionality. I am trying to apply a strain on the 4 fan edges (boundaries 13,14,18,20,29,30,43,44) of my structure and view it's resulting von Mises stress in the centre.

My problem is that no matter what value i enter as the boundary load, the resulting structure is always stretched by the same amount (20 microns) which is not correct. Any thoughts on what i am doing wrong would be greatly appreciated.

(As added information.... my goal is to simulate a 0.2% biaxial strain on the whole structure and view the von Mises stress profile in the centre of the structure.)

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4 Replies Last Post 24 nov 2015, 14:25 GMT-5
Jeff Hiller COMSOL Employee

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Posted: 9 years ago 24 nov 2015, 13:19 GMT-5
Your model is fine and responds linearly to the loading, as expected. See my post here: www.comsol.com/community/forums/general/thread/95633/#p217482
Jeff
Your model is fine and responds linearly to the loading, as expected. See my post here: http://www.comsol.com/community/forums/general/thread/95633/#p217482 Jeff
Waseem Aldeek
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Posted: 9 years ago 24 nov 2015, 13:35 GMT-5
Thanks Jeff,

Is there anyway to change how the model is displayed post loading, to show a less "stretched" and more realistic structure?

Thanks again!
Thanks Jeff, Is there anyway to change how the model is displayed post loading, to show a less "stretched" and more realistic structure? Thanks again!
Jeff Hiller COMSOL Employee

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Posted: 9 years ago 24 nov 2015, 13:52 GMT-5
Yes, you can change the scaling factor to any value you choose. See screenshot attached.
Jeff
Yes, you can change the scaling factor to any value you choose. See screenshot attached. Jeff

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Waseem Aldeek
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Posted: 9 years ago 24 nov 2015, 14:25 GMT-5
Thank you, this has solved my issue.
Thank you, this has solved my issue.

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