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采用三维有限元法模拟SiC/Ti-6Al-4V复合材料界面的残余应力分布,分析纤维排列方式对纤维一侧界面残余应力的影响。结果表明,纤维排列方式对纤维一侧界面径向、轴向和周向残余应力均有较大影响,其中纤维六方排列时纤维一侧界面残余应力沿纤维周向分布均匀,且周向残余应力小,不易在界面形成径向裂纹,是较为理想的纤维排列方式。
The residual stress distribution at the interface of SiC / Ti-6Al-4V composite was simulated by three-dimensional finite element method. The effect of fiber arrangement on the residual stress at the interface of fiber was analyzed. The results show that the arrangement of fibers has a significant influence on the radial, axial and circumferential residual stresses at the fiber-side interface. The residual stress at the fiber-side interface at the fiber-hexagonal arrangement is distributed uniformly along the fiber, and the circumferential residual stress Small, not easy to form radial cracks in the interface, is the ideal way to arrange the fibers.