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CQUAD4 in bending test
#1
Hi, 

I am getting some unexpected results running the attached cantilevered composite plate model in Mystran 11.0. :
  • The model is a flat plate in the X-Y plane, with dimensions of 1.5m x 0.15m and fully fixed at one of the short ends. 
  • A Z-direction shear force is applied through an RBE3 at the unsupported end (Grid 737).
  • I would expect a Z-deflection at Grid 737 close to T3 = 0.29625 (simple CLT calculation and in agreement with other FEM solvers)
  • But I am getting T3 = 0.03613559 at Grid 737 instead.
  • AUTO SPC forces are zero (constraining Z-rotations / drilling DOF on the CQUADs only)
Any ideas what could trigger this behaviour?

Do you have a simple test case for shell (CQUAD4) element bending that I can run to test the installation? 
Thanks.


Attached Files
.txt   shell_bending.txt (Size: 122.08 KB / Downloads: 28)
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Messages In This Thread
CQUAD4 in bending test - by O_Stodieck - 08-27-2020, 06:01 PM
RE: CQUAD4 in bending test - by Admin - 08-27-2020, 06:26 PM
RE: CQUAD4 in bending test - by O_Stodieck - 08-27-2020, 09:22 PM
RE: CQUAD4 in bending test - by drbillc - 08-27-2020, 08:40 PM
RE: CQUAD4 in bending test - by drbillc - 08-27-2020, 10:28 PM
RE: CQUAD4 in bending test - by Admin - 08-28-2020, 12:02 AM
RE: CQUAD4 in bending test - by O_Stodieck - 08-28-2020, 07:55 PM
RE: CQUAD4 in bending test - by drbillc - 08-28-2020, 12:05 AM
RE: CQUAD4 in bending test - by Admin - 08-28-2020, 12:24 AM
RE: CQUAD4 in bending test - by drbillc - 08-28-2020, 01:29 AM
RE: CQUAD4 in bending test - by Admin - 08-28-2020, 08:16 PM
RE: CQUAD4 in bending test - by O_Stodieck - 08-28-2020, 08:50 PM
RE: CQUAD4 in bending test - by drbillc - 08-29-2020, 12:59 AM
RE: CQUAD4 in bending test - by O_Stodieck - 08-30-2020, 11:28 AM
RE: CQUAD4 in bending test - by Admin - 08-29-2020, 07:57 PM
RE: CQUAD4 in bending test - by Admin - 08-30-2020, 04:45 PM
RE: CQUAD4 in bending test - by O_Stodieck - 09-03-2020, 08:56 PM
RE: CQUAD4 in bending test - by Admin - 09-03-2020, 11:59 PM
RE: CQUAD4 in bending test - by ceanwang - 09-04-2020, 12:06 AM
RE: CQUAD4 in bending test - by Admin - 09-04-2020, 03:50 PM
RE: CQUAD4 in bending test - by Admin - 09-09-2020, 12:30 AM
RE: CQUAD4 in bending test - by Admin - 09-09-2020, 02:40 PM
RE: CQUAD4 in bending test - by drbillc - 09-09-2020, 05:35 PM
RE: CQUAD4 in bending test - by O_Stodieck - 09-09-2020, 06:27 PM
RE: CQUAD4 in bending test - by Admin - 09-09-2020, 07:13 PM
RE: CQUAD4 in bending test - by drbillc - 09-10-2020, 01:15 PM
RE: CQUAD4 in bending test - by Admin - 09-11-2020, 05:33 AM
RE: CQUAD4 in bending test - by Admin - 09-13-2020, 01:53 AM

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