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Simon Križnik

せん断剛性のないマルチスケール材料 (Multiscale material without shear stiffness)

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コーティングされたファブリック(建築ファブリック)をマルチスケールマテリアルとしてモデル化しようとしています。 均質化された線形材料には面内せん断剛性がありますが(G12 = 23MPa)、マルチスケール非線形低次元モデルにはせん断剛性がほとんどなく、力は変位とともに減少します。


回避策として、要素を複製し、せん断剛性のみで均質化された材料を割り当てて、マルチスケール材料の剛性を補完します。 しかし、均質化された材料は、せん断剛性のみでマルチスケール+均質化されたものよりもテスト相関が優れています。





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.







shear_homogenized vs multiscale.jpg

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