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Explanation Of Non-Linear Material Effects ANSYS Analyses

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When you start mechanical analysis in ANSYS Mechanical, the adjustments of these two options are very important for parts that are attached into analysis. In here, we explaim;

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  • The engineering meanings of non-linear effects of non-linear material and thermal strain effects.
  • How these options are adjusted in ANSYS Mechanical for different parts.

What Is Non-Linear Material Effect?

In mechanical analyses, you need to asses your engineering system and all the separate parts inside it; whether they will act as rigidly or, will show extreme deformations and failure. In therms of engineering, all the materials generally shows linear characteristics up to yield strength or shear yield strength.

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Stress-strain data for a material.

If you think that the parts inside your analysis will work inside these limits, you do not need to add non-linear effects in your analysis. But if you think that, there can be rupture or deformations beyond the tensile limits of your material, you need to consider non-linear effects.

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How To Adjust Non-Linear Effects For ANSYS Mechanical Parts?

It is very basic to add non-linear effects into ANSYS Mechanical analyses.

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Adjusting ‘Nonlinear effects’ in ANSYS Mechanical.

In outline three at ANSYS Mechanical interface, click on the related part as shown by red arrow above. Beneath the ‘Material’ section, click on drop-down menu which is named ‘Nonlinear Effects’ as shown in red box above.

By default, non-linear effects of a part is set to ‘Yes’. But if you know that the parts inside your analysis will act in linear section on stress-strain graph of the materiali, you can adjust it as ‘No’.

Assessing your material’s situation is very important. If you adjust it ‘No’, you will save from lots of analysis time.

So, stress-strain curve data of the used material must be defined in ANSYS Mechanical materials. This option is avaliable only for static structural analyses, transient structural analyses, steady-state thermal and transient therman analyses.

Do not forget to leave your comments and questions about non-linear material effects in ANSYS Mechanical. Your precious feedbacks are very important for us.

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