铝合金压铸件充型凝固过程及气体卷入的数值模拟
Numerical Simulation of Filling Process and Air Entrapment Condition of Al Alloy Die-casting
余敏强， 夏 伟， 曹文炅， 周照耀
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作者单位：华南理工大学 机械与汽车工程学院，广东 广州 510640
中文关键字： 铝合金；数值模拟；压铸；气体卷入
英文关键字：aluminum alloy; numerical simulation; die-casting; air entrapment
中文摘要：以复杂铝合金压铸件为对像，建立了三维模型及有限差分模型。通过数值模拟的方法对该铸件的充型过程、凝固过程及铸件的气体卷入情况进行模拟。通过对模拟结果的分析，预测了缺陷可能产生的区域，预测结果与实际情况吻合，并提出了相应的改进意见。
英文摘要：Taking complicated aluminum alloy diecastings as study object, the 3D and FDM model were built. The filling process, solidification process and air entrapment condition of the aluminum casting were shown by numerical simulation. Based on the simulation, the positions of defects were predicted. The results of simulation are in good accordance with the product. The corresponding improving measures were put forward.