为了简便、准确地确定在凝固过程中铸件与铸型间的界面传热系数,提出了一种新的简化反求法.先选择一个形体简单的铸件作为标准试样,利用不同的传热系数进行若干次温度-时间曲线的有限元模拟,并与实际铸件中对应点的温度-时间曲线进行比较;当两曲线比较接近时,该传热系数可作为铸件与铸型之间的等效界面传热系数;并将其作为实际叶轮铸件有限元模拟的参数,所得到的模拟结果与试验结果相符,证明该方法准确可靠.

所属栏目

物理模拟与数值模拟国家自然科学基金资助项目(50864002);广西自然科学基金资助项目(0991001)

收稿日期

2009/12/92010/7/26

作者单位

许征兵:西北工业大学凝固技术国家重点实验室, 西安 710072
曾建民:西北工业大学凝固技术国家重点实验室, 西安 710072

备注

许征兵(1979-),男,安徽安庆人,博士研究生.

引用该论文:

XU Zheng-bing,ZENG Jian-min.A Simplified Inverse Method for Interfacial Heat Transfer Coefficient between Casting and Mold[J].Materials for mechancial engineering,2010,34(12):77～79
许征兵,曾建民.铸件与铸型间界面传热系数的一种简化反求法[J].机械工程材料,2010,34(12):77～79

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