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Principal strain and directions for elastic strain tensor for an elastoplastic model

Posted 29 feb 2020, 21:34 GMT-5 Structural & Acoustics, Geomechanics, Structural Mechanics Version 5.4 1 Reply

Yu Zhang
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Dear all,

I want to calculate the Principal strain and directions for ELASTIC strain tensor in a elastic-plastic model. I found that the principla strain and directions given in COMSOL are for the total strain tensor, rather than the elastic strain tensor. Could you please give me some idea how to achieve that?

Thanks a lot.

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Yu Zhang
1 Reply Last Post 2 mar 2020, 03:01 GMT-5
Henrik Sönnerlind COMSOL Employee

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Posted: 4 years ago 2 mar 2020, 03:01 GMT-5
Updated: 4 years ago 2 mar 2020, 03:01 GMT-5

You can compute eigenvalues and eigenvectors for any symmetric tensor using the Matrix Diagonalization node, found under Definitions->Variable Utilities. To get access to Variable Utilities, you need to enable it under Show More Options.

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Henrik Sönnerlind
COMSOL
You can compute eigenvalues and eigenvectors for any symmetric tensor using the *Matrix Diagonalization* node, found under *Definitions*->*Variable Utilities*. To get access to *Variable Utilities*, you need to enable it under *Show More Options*.

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