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Ansiotropic Hyperelastic Model

Posted Oct 2, 2013, 1:42 p.m. EDT Structural Mechanics Version 4.3b 1 Reply

Chris Layman
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Hi

I can define an orthotropic material in Linear Elastic or I can define a Neo-Hookean etc. material in Hyperelastic, but how to define an orthotropic Neo-Hookean material?

Thanks!
1 Reply Last Post Oct 3, 2013, 5:12 p.m. EDT
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago Oct 3, 2013, 5:12 p.m. EDT
Hi Chris,

There is no such thing as an anisotropic Neo-Hookean material! Using different Neo-Hookean material constants in different directions does not result in a hyperelastic formulation. There are however other anisotropic hyperelastic models. Check out the “Arterial Wall Mechanics” COMSOL model from the Gallery (Model #14499) for a very good example.

Nagi Elabbasi
Veryst Engineering
Hi Chris, There is no such thing as an anisotropic Neo-Hookean material! Using different Neo-Hookean material constants in different directions does not result in a hyperelastic formulation. There are however other anisotropic hyperelastic models. Check out the “Arterial Wall Mechanics” COMSOL model from the Gallery (Model #14499) for a very good example. Nagi Elabbasi Veryst Engineering

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