Machining Deformation Prediction of Thin-Walled Part Based on Finite Element Analysis
Hongxiang Wang1, Yabin Tang2, Zhanshan Liu1 , Shi Gao1
(1.School of Mechanical Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China;2.Jiangnan Institute of Computing Technology, Wuxi Jiangsu, 214083, China)
Abstract:
For the problems of machining distortion and the low accepted product during milling process of aluminum alloy thin-walled part, this paper starts from the analysis of initial stress state in material preparation process, the change process of residual stress within aluminum alloy pre-stretching plate is researched, and the distribution law of residual stress is indirectly obtained by delamination measurement methods, so the effect of internal residual stress on machining distortion is considered before finite element simulation.Considering the coupling effects of residual stress, dynamic milling force and clamping force on machining distortion, a three-dimensional dynamic finite element simulation model is established, and the whole cutting process is simulated from the blank material to finished product, a novel prediction method is proposed, which can availably predict the machining distortion accurately. The machining distortion state of the thin-walled part is achieved at different processing steps, the machining distortion of the thin-walled part is detected with three coordinate measuring machine tools, show that the simulation results are in good agreement with experimental data.
Key words: thin-walled part machining deformation residual stress aluminum alloy finite element simulation
DOI:10.11916/j.issn.1005-9113.2015.04.006
Clc Number:TH161+.3
Fund:
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Machining Deformation Prediction of Thin-Walled Part Based on Finite Element Analysis
本站小编 哈尔滨工业大学/2019-10-23
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