Abstract
The shear pre-deformed 3D angle-interlock woven composites under tension load is studied using experimental and numerical methods. A novel non-orthogonal mesoscopic finite element (FE) model taking into consideration non-orthogonal periodic boundary conditions and elasto-plastic damage model is developed to predict the effective mechanical properties and reveal the damage and failure mechanisms. The predicted stress-strain curve is agreement with that of experiment, and the failure mechanisms are verified by Scanning Electron Microscopy (SEM). The effects of shear pre-deformed angle on the stiffness and strength of 3D angle-interlock woven composites are discussed based on simulation results. This study can be helpful of providing reliable guidance for analyzing and designing the woven composite complex structures with pre-deformation.
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