Geometric non-linear analysis of thin flat plates under end shortening, using different versions of the finite strip method

摘要: Two finite strip methods are developed for predicting the geometrically non-linear response of rectangular thin plates with simply supported ends when subjected to uniform end shortening in their plane. Although formulations both based on concept principle minimum potential energy, first method utilizes a semi-energy strip, whereas second (which is designated by name full-energy method) all displacements postulated appropriate shape functions. It noted that approach, out-of-plane displacement only which deflected form while von Karman's compatibility equation solved obtain corresponding in-plane forms. The then applied analyze post-local-buckling behavior some representative flat results also obtained through application element method, employing general purpose MSC/NASTRAN package. Through comparison and discussion, knowledge level capability different versions significantly promoted.