Multiaxial fatigue life prediction of composite laminates

摘要: Abstract A study of composite laminates under tension–torsion biaxial loading is presented. The focus placed on fatigue lives different paths. macro-meso model used to predict multiaxial life also presented in this paper. Firstly, a macro-scale 3D RVE corresponding established determine strain components the material principal direction each layer for stress ratio. Secondly, meso-scale with fibers distributed randomly established, progressive damage prediction method, strength can be predicted, and final failure confirmed. Thirdly, select any one path at which fiber (matrix failure) establish reference curve (matrix). Finally, curve, predicted. And numerical results show good agreements experimental data.