Static and Dynamic Analysis of Systematically Creased Membranes

摘要

This paper presents the static and dynamic analysis of systematically creased polymer membranes. First, static analysis was performed to study the non-linear material response of singly- and doubly-creased membranes. Then, numerical analysis of a creased membrane was performed with a modified wrinkle algorithm where the nonlinear material response was incorporated. Numerical results were validated with corresponding experiments. Finally, dynamic analysis of a four-corner loaded square membrane was performed under pristine and creased configurations. The pristine model was considered linear isotropic, and the creased model was analyzed with combined linear isotropic and nonlinear orthotropic material behavior. Numerical results of pristine, singly- and doubly-creased membranes were also validated with corresponding experiments. Physical explanations are provided addressing the numerical and experimental observations. The outcomes of the present work will have significance to large, lightly-tensioned gossamer spacecraft such as solar sails.