A model of shot peening of the particle reinforced TiB2/Al composites was built with ANSYS/LSDYNA finite element simulation software, then the residual stress distribution after shot peening was predicted. The shot peening tests were performed on the composites, and the residual stresses were measured, then the test results were compared with the simulation results. It is shown that the experimetal results of residual stress distribution of the composites after shot peening were in agreement with the simulated one. The reinforcement at the outmest layer after shot peening showed tensile stress state. In the residual pressure stress field, residual stress in the reinforcement was generally greater than that in the substrate, which was resulted from the difference of the mechanical properties of the two materials.%采用ANSYS/LS-DYNA有限元分析软件建立了颗粒增强TiB2/Al复合材料的喷丸模型,并对喷丸后残余应力分布进行了预测;然后对复合材料进行了喷丸试验,对残余应力进行了检测;将试验结果与模拟结果进行了对比.结果表明:该复合材料喷丸后残余应力分布的试验结果与模拟结果基本相符;喷丸后最表层部分增强体呈拉应力状态,在材料残余压应力场内,由于增强体和基体材料力学性能的差异,增强体的残余应力值普遍大于基体中的.
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