DYNAMIC ANALYSIS OF LAMINATED COMPOSITE SHELLS WITH HOFFMAN YIELD CRITERION

摘要

This paper presents a numerical study of the dynamic response of composite shells under impulsive loading. The material is modelled by anisotropic Hoffman yield surface, which permits different tensile and compressive strengths. An explicit time-integration algorithm is employed to expedite dynamic analysis. Four-node shell elements with only one Gauss point are used. Hour-glass control is used to suppress element instability. Numerical examples are presented to address various aspects of the study, including single-iteration schemes suitable for parallel processing.