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Stress linearisation along any arbitrary path

Posted Oct 31, 2019, 7:55 a.m. EDT Structural & Acoustics, Mesh, Structural Mechanics 2 Replies

Abhishek Basak
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Hello, I wonder if there is a means to do stress linearisation during post processing along any arbitrary path intersecting the structure? The existing stress linearisation node allows selection of only predefined edges. Abhishek

2 Replies Last Post Nov 4, 2019, 1:05 a.m. EST
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago Nov 1, 2019, 2:59 a.m. EDT
Updated: 5 years ago Nov 1, 2019, 2:59 a.m. EDT

Hi Abishek,

Stress linearization requires a geometrical line. If it is problematic to insert a new line, for example because you have a large complex geometry or that the solution takes a long time, then a good idea is to use one or more submodels for the stress linearization evaluations.

How to set up submodels is shown in for example: https://www.comsol.com/model/submodeling-analysis-of-a-shaft-20359 https://www.comsol.com/model/submodel-in-a-wheel-rim-8517

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi Abishek, Stress linearization requires a geometrical line. If it is problematic to insert a new line, for example because you have a large complex geometry or that the solution takes a long time, then a good idea is to use one or more submodels for the stress linearization evaluations. How to set up submodels is shown in for example: Regards, Henrik
Abhishek Basak
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Posted: 5 years ago Nov 4, 2019, 1:05 a.m. EST

Dear Henrik,

Thank you for the reply. I am quiete surprised that COMSOL being such a user friendly software doesn't provide this crucial tool (as far as pressure vessel design is concerned), while softwares like ABAQUS and ANSYS provide such a functionality since a long time.

Is there any add-in which can do the stress linearisation after the stresses have been extracted using cut line 3D option?

Regards Abhishek

Dear Henrik, Thank you for the reply. I am quiete surprised that COMSOL being such a user friendly software doesn't provide this crucial tool (as far as pressure vessel design is concerned), while softwares like ABAQUS and ANSYS provide such a functionality since a long time. Is there any add-in which can do the stress linearisation after the stresses have been extracted using cut line 3D option? Regards Abhishek

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