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Warping or Nastran warping?

Pioneer
Pioneer

Using the Check Element Quality tool I see that there are 2 kinds of warping: Warping and Nastran Warping, which have different maximum allowable values. When checking the mesh quality, which one do I have to choose?

I would say Nastran Warping since then I have to run the analysis using Nastran, but then I do not understand what the other one means.

Also, using the Nasran Warping no element fails the check, whereas using the other one I get quite a few failures. 

1 REPLY

Re: Warping or Nastran warping?

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

Dear Olgola,

Your Element Quality Check command is "TOOLS > CHECK > NX NASTRAN", this is a new resource found in FEMAP V11.2 (March 2015), this is the best element checking if your Finite Element solver is NX NASTRAN.

 

There are 22 separate checks on the NX Nastran tab, which are the same quality checks used by the NX Nastran solver (WARP = Warping, IAMIN = Minimum Internal Angle in degrees, IAMAX = Maximum Internal Angle in degrees, AR = Aspect Ratio, EPLR = Edge Point Length Ratio, DETJ = Jacobian):

 

  • Quadrilaterals - QUAD SKEW, QUAD TAPER, QUAD WARP, QUAD IAMIN, QUAD IAMAX
  • Triangles - TRIA SKEW, TRIA IAMAX
  • Tetrahedrals - TETRA AR, TETRA EPLR, TETRA DETJ
  • Hexahedrals (Bricks) - HEX AR, HEX EPLR, HEX DETJ, HEX WARP,
  • Wedges - PENTA AR, PENTA EPLR, PENTA DETJ, PENTA WARP
  • Pyramids - PYR AR, PYR EPLR, PYR DETJ, and PYR WARP

 

check-element-quality-new.png

 

Run this command, let ALL CHECKS ON(not matter if your model is 1-D, 2-D or 3-D) and FEMAP will tell you if elements fails or pass the NX NASTRAN QUALITY Check, OK?.

 

Best regards,

Blas.

Blas Molero Hidalgo, Ingeniero Industrial, Director
IBERISA • 48004 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog Femap-NX Nastran: http://iberisa.wordpress.com/