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Including non linearity

Posted 1 juil. 2012, 06:41 UTC−4 Structural Mechanics Version 4.2 2 Replies

Vijay Ramakrishnan
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Dear Sir ,
I am using linear elastic material model under solid mechanics.In most cases the calculations are in linear range but I am unsure if my all are in linear range. How can i include non linearity just in case the calculations enter non linear domain ?
Thanking you in advance,
Vijay
2 Replies Last Post 1 juil. 2012, 13:00 UTC−4
Mohamed Zanaty
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Posted: 1 decade ago 1 juil. 2012, 12:31 UTC−4
Witin the solver, you can include the nonlinearity as following:
Study => step (e.g. Frequency Domain)=> Include geometric nonlinearity (just a tick)

Hope it works

Regards,
Mohamed
Witin the solver, you can include the nonlinearity as following: Study => step (e.g. Frequency Domain)=> Include geometric nonlinearity (just a tick) Hope it works Regards, Mohamed
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 1 juil. 2012, 13:00 UTC−4
In Stationary and Transient Dynamic analyses you can add geometric nonlinearity to an elastic material through the Study node. There’s a check box under the “Step” sub-node. This is not always sufficient though since just adding geometric nonlinearity may not be enough. The material may experience large strains that deviate from the linearity of Hooke’s law. In that you should also replace the elastic material with a more accurate model such as hyperelastic or elastic-plastic.

Nagi Elabbasi
Veryst Engineering
In Stationary and Transient Dynamic analyses you can add geometric nonlinearity to an elastic material through the Study node. There’s a check box under the “Step” sub-node. This is not always sufficient though since just adding geometric nonlinearity may not be enough. The material may experience large strains that deviate from the linearity of Hooke’s law. In that you should also replace the elastic material with a more accurate model such as hyperelastic or elastic-plastic. Nagi Elabbasi Veryst Engineering

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