Residual stresses and failure behavior of 3/2 GFRP/Al-Li laminates after single and Multiple shot’s indentation under quasi-static condition were investigated to better reveal the characteristics of residual stresses after shot-peening forming. Single shot’s indention behavior was analyzed with the finite element model using the Johnson-Cook material model and customize damage initiation criterion then validated by experiments of single shot’s indentation. Results indicated that the fiber layers hindered the deformation of aluminum-lithium layer. Moreover, the layup of fiber layers and the shot diameter (more than 2mm) affected the shape of the crater which reflected characteristics of residual stresses around the crater. In addition, the pressing depth of shot was related to GFRP/Al-Li laminates’ failure. Residual stresses increased with the pressing depth of shot. Excessive residual stresses led to the FMLs’ failure. Depth of failure (the pressing depth of shot when failure occurred) was affected by shot size and the corresponding failure form changed with the shot size. Based on the results on single shot’s indentation, the residual stress field of the FMLs under multiple shot’s indentation was simulated and the forming curvatures of the FMLs with different shot peening coverage were calculated. The prediction values were consistent to the experimental results with the overall error being about ±10%.

研究了3/2 GFRP / Al-Li层压板在准静态条件下单次和多次压痕后的残余应力和破坏行为，以更好地揭示喷丸成形后的残余应力特征。使用Johnson-Cook材料模型，使用有限元模型分析了单发的压痕行为，并定制了损伤起始标准，然后通过单发的压痕实验进行了验证。结果表明，纤维层阻碍了铝锂层的变形。此外，纤维层的堆积和喷丸直径（大于2mm）影响了弹坑的形状，反映了弹坑周围残余应力的特征。此外，压射的深度与GFRP / Al-Li层压板的失效有关。残余应力随着击球深度的增加而增加。残余应力过大导致FML失效。失败的深度（发生失败时镜头的按压深度）受镜头大小的影响，相应的失败形式随镜头大小而变化。基于单杆压痕的结果，模拟了多杆压痕下FML的残余应力场，并计算了不同喷丸覆盖率的FML的成形曲率。预测值与实验结果一致，总误差约为±10％。基于单发压痕的结果，模拟了多发压痕下FML的残余应力场，并计算了不同喷丸覆盖率的FML的成形曲率。预测值与实验结果一致，总误差约为±10％。基于单发压痕的结果，模拟了多发压痕下FML的残余应力场，并计算了不同喷丸覆盖率的FML的成形曲率。预测值与实验结果一致，总误差约为±10％。