08-27-2020, 09:22 PM
(08-27-2020, 06:26 PM)Admin Wrote: Can you check the reaction forces to make sure you are applying the correct load? There is a 0.1 scaling factor in the FORCE card so you may want to double check that. Have you tried an isotropic material to see if the results are correct for that first? I will let Bill know as well.
Reaction forces are correct - factor of 0.1 is intended.
The element node numbering is such that the vectors from grids 1 to 2 point in the x-direction for all elements - this is matched in the comparison models - so I don't think this is an input error? Besides, the results are not any closer if the plies are set to 90deg in the PCOMP cards.
As you suggested, I reran the model using an isotropic material - results are much closer (<2% error).
Comparing Zmax in the T3 deflection at grid 737:
Analytical (Bernoulli beam):
I = (1.25e-04*12)**3*0.15/12 = 4.21875e-11
F = 0.1
L = 1.5
E = 70.0E9
Zmax = F*L**3/(3*E*I) = 0.038095
Mystran (see file attached)
Zmax = 3.762719E-02