Finite Element Analysis for Effects of Fiber Arrays on the Residual Stress of SiC Fiber Reinforced Ti-Matrix Composite (SiC/Ti)

Abstract:

Interfacial residual stress distribution of SiC/Ti-6Al-4V composite was simulated by a three-dimensional finite element method. The effects of fiber arrays on interfacial residual stresses were discussed. Results show that the fiber array has great influences on radial, axial and circumferential residual stress. Among them hexagonal fiber array is an ideal arrangement pattern due to uniform distribution of interfacial residual stresses along the circumferential direction and low circumferential residual stress, which makes it difficult to generate radial crack.