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针对大型复杂薄壁结构件加工变形有限元仿真效率低,不易实现全尺寸、完整结构状态下加工变形准确预测的突出问题,基于ABAQUS软件的有限元仿真及其二次开发技术,提出一种采用连续多个静态隐式分析步模拟三维动态显式有限元仿真的方法,研究了自动加载与卸载切削力载荷和分析及识别最大加工变形等关键技术,实现了大型复杂薄壁结构件完整结构全尺寸条件下、按照复杂走刀路径进行切削仿真的加工变形有限元快速仿真预测,通过切削测量实验,验证了仿真结果的准确性,为该类零件加工变形预测技术研究提供了新的技术手段。
Aimed at the outstanding problems of the deformation deformation finite element simulation of large-scale complex thin-walled structures, which is not efficient enough to predict the deformation accurately under full-scale and complete structure, based on the finite element simulation of ABAQUS software and its secondary development techniques, A series of static implicit analysis steps are used to simulate the three-dimensional dynamic explicit finite element simulation. The key technologies of automatic loading and unloading cutting force load, analysis and identification of the maximum machining deformation are researched. The complete structure of large-scale complex thin-walled structural elements Dimensional finite element simulation of cutting deformation under the condition of the size of the cutting path, the accuracy of the simulation results is verified by the cutting measurement experiment, which provides a new technical means for the research on the deformation deformation prediction of such parts.