(SOLVED) Multiscale material without shear stiffness

Simon Križnik
Simon Križnik Altair Community Member
edited October 2020 in Community Q&A

Hi,

I am trying to model a coated fabric (architectural fabric) as a multiscale material. The homogenized linear material has in-plane shear stiffness (G12=23MPa), but the multiscale nonlinear reduced-order model has almost no shear stiffness and force is decreasing with displacement. 

As a workaround, I duplicate the elements and assign homogenized material with only shear stiffness to complement no stiffness of multiscale material. But the homogenized material has better test correlation than multiscale+homogenized with only shear stiffness. 

Any comments or suggestions would be greatly appreciated.

 

 

 

<?xml version="1.0" encoding="UTF-8"?>homogenized.gif

<?xml version="1.0" encoding="UTF-8"?>multiscale.gif

<?xml version="1.0" encoding="UTF-8"?>shear_homogenized vs multiscale.jpg

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