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Isotropic tangent modulus

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Hi,


I have in my model material nonlinearity and contact nonlinearity, because I connect 3-4 components together. Thus I have to specify the plasticity under solid mechanics - Linear Elastic Material. If I do this, I need more material properties, as for example the isotropic tangent modulus.
What is this isotropic tangent modulus and how do I determine it? What impact this module has on the model?

Many Thanks.

1 Reply Last Post 26 feb 2013, 10:06 GMT-5
Josh Thomas Certified Consultant

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Posted: 1 decade ago 26 feb 2013, 10:06 GMT-5
Yasemin-

Tangent modulus is the slope of the stress strain curve after the yield strength has been exceeded. As this value is lowered to zero you approach a "perfectly plastic" material. Isotropic means there is no directional dependence on the property.

Best regards,
Josh Thomas
AltaSim Technologies
Yasemin- Tangent modulus is the slope of the stress strain curve after the yield strength has been exceeded. As this value is lowered to zero you approach a "perfectly plastic" material. Isotropic means there is no directional dependence on the property. Best regards, Josh Thomas AltaSim Technologies

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