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thickness after deformation

Posted Jun 8, 2016, 4:35 a.m. EDT Structural Mechanics Version 5.0 3 Replies

Melvin James
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hi , am new to comsol and i was designing a structural model to find the thermal stress and displacement on a sold cylinder ( like a mirror ) with thickness 100[mm] and diameter 1m . i compiled and saw that there was a relative displacement of the solid from the initial position and a small thermal expansion seen on the horizontal axis . at his point i need to measure the change in diameter and thickness of the my solid cylinder . can you suggest me how to do this .
3 Replies Last Post Jun 10, 2016, 3:39 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 9 years ago Jun 9, 2016, 3:19 a.m. EDT
Hi

there are several ways, also depending if you have turned the geometrical non-linear on.
Here is a toy model, the parameter are set to no thermal expansion DT=0 but to add thermal effects you can change DT to 10[K].

But first understand the different settings I have added hereby, there are elements under Definitions, in the Derived values and the Plots

Unfortunately I have only V5.2

--
Good luck
Ivar
Hi there are several ways, also depending if you have turned the geometrical non-linear on. Here is a toy model, the parameter are set to no thermal expansion DT=0 but to add thermal effects you can change DT to 10[K]. But first understand the different settings I have added hereby, there are elements under Definitions, in the Derived values and the Plots Unfortunately I have only V5.2 -- Good luck Ivar

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Melvin James
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Posted: 9 years ago Jun 10, 2016, 12:27 a.m. EDT
thanks Ivar
i am using a version 5 and i can't open the file from version 5.2 . Am getting a error " model build with a different version of Comsol Multiphysics ". In my model i have not turned the geometrical non linear ON .
Is there any other way to measure the expansion measure ?
thanks Ivar i am using a version 5 and i can't open the file from version 5.2 . Am getting a error " model build with a different version of Comsol Multiphysics ". In my model i have not turned the geometrical non linear ON . Is there any other way to measure the expansion measure ?
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 9 years ago Jun 10, 2016, 3:39 p.m. EDT
Hi

Sorry to hear you cannot read my 5.2 file, I do neither not have any way to generate an older model and as there are quite some nodes in there, not obvious to explain all settings ...

I join the file saved as an ".m" matlab model file, perhaps you can manage to read that one

--
Good luck
Ivar
Hi Sorry to hear you cannot read my 5.2 file, I do neither not have any way to generate an older model and as there are quite some nodes in there, not obvious to explain all settings ... I join the file saved as an ".m" matlab model file, perhaps you can manage to read that one -- Good luck Ivar

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