Abstract
In this study, a global/local analysis strategy for partly wrinkled membranes is presented. In the global analysis, a relatively coarse membrane element mesh is used to calculate inplane displacements and stresses. The local shell analyses are then performed selectively for the wrinkled region to calculate the detailed wrinkle deformation. Solutions from the global model are used to derive the boundary conditions for the local model. In the global analysis, the penalty-parameter modified material modeling approach is employed for wrinkled membranes. The wrinkle deformation is obtained from a local non-linear post-buckling shell analysis using refined meshes seeded with random geometric imperfection. In the numerical calculation, the global/local analysis procedure is illustrated for a corner-loaded square membrane. The accuracy of the global/local procedure is established by comparing the results with those of conventional shell analysis, and the mesh convergence and global/local boundary conditions are also studied.
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