薄壁构件单面铣削残余应力变形有限元模拟与试验研究

Study on Finite Element Simulation and Experiment of Distortion of Residual Stress During Single Side milling of Thin-walled Parts

提出了基于残余应力分层加载的残余应力变形仿真流程,建立了薄壁构件加工残余应力引起变形的有限元模型,对预测的变形值进行分析并得到了变形规律。通过GH4169薄壁构件单面铣削试验,对残余应力变形进行了测试,与有限元模拟结果相比,数值模拟结果具有较高的准确性。

The simulation process which based on residual stress lamination loaded is proposed. The finite element model of thin-walled parts deformation caused by residual stress is established. The result shows that the thin-walled parts became bent along the longitudinal direction, and reached a maximum at the tip. From the middle to both sides of the edge, the deformation tends to increase. According to the experimental research of single side milling of GH4169thin-walled parts, the deformation is measured. Comparing the experimental results with the finite element simulation results, the numerical simulation results have high accuracy.