摘要：
为研究飞机受损件经打磨后表面形状对残余应力分布的影响,文中对飞机受损件腐蚀损伤区域打磨后的表面形状进行分类,并对表面形状进行函数表征,采用ABAQUS软件完成了不同表面形状及曲面曲率下激光喷丸的有限元模拟.模拟结果表明,激光喷丸后,材料表面最大残余压应力由大到小的表面形状依次为双凹面、凹圆弧面、凸凹面、平面、凸圆弧面、双凸面,表面形状对残余压应力层深度影响较小.随着曲面曲率的增加,双凹面、凹圆弧面、凸凹面表面最大残余压应力逐渐增大,而双凸面、凸圆弧面表面最大残余压应力逐渐减小,曲面曲率对残余压应力层深度影响较小.%In order to research the influence of the surface shapes of the damaged aircraft parts after polishing on the distribution of residual stress,the surface shapes located in the polished area of the damaged aircraft parts are classified.The mathematical functions are adopted to describe the classified surface shapes, and the software ABAQUS is used to simulate the laser shot peening with different surface shapes and curvatures.Simulation results indicate that,after the laser shot peening,the biconcave surface bears the greatest maximum residual compressive stress,followed by the concave surface, the saddle surface, the plane, the convex surface and the biconvex sur-face,which means that the surface shape has a small effect on the depth of residual compressive stress lager.In ad-dition, with the curvature increases,the maximum residual compressive stresses of the biconcave surface,the con-cave surface and the saddle surface increase gradually,while those of the convex surface and the biconvex surface decrease,which means that the curvature has a small effect on the maximum residual compressive stress influence depth.
