Nonlinear Mechanical Shape Checking In ANSYS Mechanical(Illustrated Expression)

Physical problems includes lots of different situations such as fluids, basic mechanics, slight deformations, large deformations etc. So it is very important to select the proper meshing options according to your physics requirements. ANSYS provides very extensive meshing options and capabilities upon this requirements. One of these options in ANSYS Mechanical is Shape Checking options of meshing. In this article we will show what is Nonlinear Mechanical options in Shape Checking in ANSYS Mechanical meshing.

Where To Use Nonlinear Mechanical Shape Checking Option In ANSYS Mechanical?

Select ‘Nonlinear Mechanical’ criterion in Shape Checking  in ANSYS Mechanical meshing.

The default option for Shape Checking in ANSYS Mechanical meshing is ‘Standard Mechanical’. You can select the ‘Nonlinear Mechanical’ according to you physics and FEA requirements.

As we stated in Aggressive Mechanical article in Mechanical Base, it is vert restrictive Shape Checking options because of it is using tighter Jacobian ratios at nodes. But in Nonlinear Mechanical, product of the bounded Bézier Jacobian ratio and skewness for tetrahedral elements is used. Which means it is much more tighter compared to Aggressive Mechanical option of Shape Checking.

It is possible to mesh failure in analyses and it will take longer times to obtain mesh and solutions with Nonlinear Mechanical. We recommend that you need to use this option in Nonlinear analyses or large deformation analyses in ANSYS Mechanlcal.

Select ‘Nonlinear Mechanical’ as ‘Physics Preference’ in ANSYS Mechanical meshing.

It is also recommended to select the ‘Nonlinear Mechanical’ physics preference in ANSYS Mechanical meshing if you select the ‘Nonlinear Mechanical’ for Shape Checking option as above.

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