摘要
针对壁板零件激光喷丸成形应用中的几何效应,以单曲率圆柱面板件为对象,进行基于固有应变建模方法的有限元仿真分析,并进行激光喷丸成形试验验证;提出以非平面板件与平面板件变形偏差百分比作为几何效应衡量指标,分析了轴线长度、板材厚度、截面弧长、截面半径等典型几何参数对激光喷丸成形效果的影响规律。结果表明,当轴线长度大于截面弧长两倍时,偏差百分比与轴线长度基本无关;其他参数一定时,偏差百分比分别随截面半径的增大、截面弧长的减小、板材厚度的增大而减小。
To investigate the geometry effect on laser peen forming (LPF) for panel shaping,finite element simulation is performed with single-curved cylindrical specimens based on the eigenstrain model,and LPF experiments are conducted to verify the simulation results.The normalized deviation between the deformations of non-planar specimen and planar plate is proposed as the indicator to evaluate the geometry effect,based on which the effect of typical geometric parameters on LPF is analyzed including axial length,plate thickness,sectional arc length and sectional radius.The results show that the normalized deviation is irrelevant to the axial length when axial length is more than twice as the arc length.Moreover,the normalized deviation is observed to decrease with the increasing sectional radius,the decreasing arc length or the increasing plate thickness,respectively,when other parameters are specified.
作者
解宇飞
胡永祥
姚振强
XIE Yufei;HU Yongxiang;YAO Zhenqiang(State Key Laboratory of Mechanical System and Vibration,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《航空制造技术》
2018年第23期59-63,共5页
Aeronautical Manufacturing Technology
基金
国家重点研发计划项目(2016YFB1102705)
航天先进技术联合研究中心技术创新项目(USCAST2015-26)
关键词
激光喷丸成形
几何效应
单曲率
固有应变
偏差百分比
Laser peen forming
Geometry effect
Single curvature
Inherent strain
Normalized deviation
