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在对A356铝合金汽车轮毂热处理工艺分析的基础上,采用ANSYS有限元软件对铝合金汽车轮毂淬火过程中温度场及热应力场的分布进行数值模拟与分析。研究表明:在淬火过程中,轮毂在47 s时完全冷却到70℃,与实际较为吻合。轮毂受到的最大热应力为180.507 MPa,小于A356铝合金的强度极限。轮毂在淬火过程中会发生微量的变形,距离轮辐最远处的变形量最大,其值为0.127341 mm,建议在热处理后对汽车轮毂进行精密校核。
Based on the analysis of heat treatment process of A356 aluminum alloy vehicle wheel hub, the distribution of temperature field and thermal stress field during the quenching process of aluminum alloy vehicle wheel hub was numerically simulated and analyzed by ANSYS finite element software. The research shows that during the quenching process, the hub is completely cooled down to 70 ℃ at 47 s, which is in good agreement with the actual situation. The maximum thermal stress on the hub is 180.507 MPa, which is less than the strength limit of A356 aluminum alloy. The wheel hub will undergo slight deformation during the quenching process with the largest deformation from the spoke at a maximum value of 0.127341 mm. It is suggested that the wheel hub should be checked carefully after heat treatment.