Nonlinear FEM 2D failure onset prediction of composite shells based on 6-parameter shell theory

作者：Chroscielewski J; Sabik A; Sobczyk B^*; Witkowski W

来源：Thin-Walled Structures, 2016, 105: 207-219.

DOI：10.1016/j.tws.2016.03.024

• First ply failure
• Finite element analysis
• Composite laminate
• Laminated shell
• Nonlinear six-parameter shell theory
• Drilling rotation

Within the framework of the nonlinear 6-parameter shell theory with the drilling rotation and asymmetric stress measures, the modifications of Tsai-Wu and Hashin laminate failure initiation criteria are proposed. These improvements enable to perform first ply failure estimations taking into account the non-symmetric stress measures. In order to check the validity of the proposed criteria, finite element analyses are performed with the use of the Authors' program and the Abaqus package. It is shown that the classical forms of the well known failure hypotheses can predict different stress capacity of structure, if the stress measures do not preserve the symmetry condition.

• 出版日期2016-8