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How many integration points do the elements in my model have and where are they located?

- April 13, 2023 at 7:33 am
  
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  The number of integration points used in an element can usually be found in the element’s documentation in the MAPDL Theory Reference > Element Library. help/ans_thry/thy_elemlib.html (local help) https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v193/ans_thry/thy_elemlib.html (online help for 2019R1) The number of integration points used also varies by quantity which is to be determined. E.g.: SOLID187 (tetrahedral elements with quadratic shape functions) uses 4 integration points for the calculation of Stiffness, Mass, and Stress Stiffness Matrices, and also for the calculation of Thermal Load Vectors. But it uses 6 integration points for the calculation of Pressure Load Vectors. The location of the integration points are documented (but in a more general manner – not per element) under MAPDL Theory Reference > Element Tools > Integration Point Locations. help/ans_thry/thy_et1.html (local help) https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v193/ans_thry/thy_et1.html (online help) The integration points can also be output using the PRESOL,LOCI command in postprocessing. Note that OUTRES,LOCI needs to be issued before the SOLVE to write the integration point locations to the rst-file. You can find a very simple example for SOLID186 and SOLID187 elements attached. Keywords: integration point location, Gauss point location
  
  Attachments:
  1. 2060207.zip

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