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Typical warning message from LUSAS Solver text output file (*.OUT):
***WARNING*** CONNECTING THIN SHELL ELEMENTS (TS3, QSI4 OR SHI4) TO GENERAL SHELL ELEMENTS (TTS3, QTS4,
TTS6 OR QTS8) IS NOT RECOMMENDED (XTELDA PROCESSOR)
Most common causes & links to solutions
Thick shells include out-of-plane shear deformation whereas thin shell elements do not. It is advised that one or the other is used rather than a combination of these two different
types of formulation. If the elements are to be relatively thin and shear deformation therefore has a negligible effect, then it would generally be preferable to use Thin Shell elements.
Linear interpolation order elements should also not be mixed with
quadratic order interpolation elements. For more information regarding the different elements available in LUSAS, please see:
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