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建立了三维铝型材挤压过程有限体积法(FVM)数学模型,研究了此模型的基本理论和关键技术。采用块结构化的非正交网格划分复杂的计算区域,采用流体体积法(VOF)追踪变形材料的自由表面。根据上述理论编写了铝型材挤压过程有限体积法程序AE-FVM。针对典型的大挤压比薄壁铝型材挤压过程进行了数值模拟并进行工作带优化。将模拟结果与有限元软件Deform-3D及有限体积法软件SuperForge的模拟结果进行对比,验证了所建立数学模型的可行性和正确性。
The finite volume method (FVM) mathematical model of 3D aluminum extrusion process was established, and the basic theory and key technologies of this model were studied. The block-structured non-orthogonal meshes are used to divide the complicated calculation area and the free surface of the deformed material is tracked by the fluid volume method (VOF). According to the above theory, the aluminum extrusion process finite volume method AE-FVM was prepared. For the typical large-scale extrusion than the thin-walled aluminum extrusion process numerical simulation and work with the optimization. The simulation results are compared with the finite element software Deform-3D and finite volume method software SuperForge simulation results to verify the feasibility and correctness of the mathematical model.