Wrinkling of Orthotropic Viscoelastic Membranes

Abstract

This paper presents a simplified simulation technique for orthotropic viscoelastic films. Wrinkling is detected by a combined stress-strain criterion and an iterative scheme searches for the wrinkle angle using a pseudo-elastic material stiffness matrix based on a nonlinear viscoelastic constitutive model. This simplified model has been implemented in ABAQUS/Explicit and is able to compute the behavior of a membrane structure by superposition of a small number of response increments. The model has been tested against a published solution for a time-independent isotropic membrane under simple shear and also against experimental results on StratoFilm 420 under simple shear.

Computational modeling and simulation of rupture of membranes and thin films

“…There exists a number of other theoretical and/or computational approaches that may be used to study the mechanical response of structural fabrics [19][20][21][22][23][24][25][26][27][28], fibrous biological tissues [15,[29][30][31][32] and lipid membranes [33][34][35][36][37][38][39][40][41][42] (to cite just a few). Yet, to properly represent anisotropic deformation and rupture at the meso-or macro-scales, we believe that particle-based models (and, to some extent, models based on the network representation of [14][15][16][17]) are among the most suited.…”