Shear locking in plate elements

[namklof]

A colleague regularly attributes differences between measured results and predicted results from plate/shell element models as due to shear locking (either in plane or through the thickness). We are talking about nonlinear models with many possible modeling errors. My experience has been that quadratic elements have little in-plane shear locking issues and most commercial finite element codes use mixed integration rules that very much minimize transverse shear locking. The bottom line is I don’t believe shear locking in plate elements is not an issue any more (in mature software with proper mesh refinement). Does anyone know of experience that shows it can be a problem.

 

[flash3780]

You're correct. Shear locking with higher order elements and proper mesh refinement isn't a likely occurrence. Shear locking is caused because the shape functions for first-order elements cannot handle bending loads properly. Higher order elements are less likely to experience shear locking.

 

[utkk]

You 're correct. Shear locking is the numerical problem . You can found it in the first order element and you can use higer order element , mesh refinement ,reduce integration point in element to solve shear locking. Good luck .

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