| 铸件凝固温度场有限元分析中界面热阻处理 |
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| 引用本文： | 宋广胜,路明.铸件凝固温度场有限元分析中界面热阻处理[J].沈阳航空工业学院学报,2002,19(4):20-22. |
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| 作者姓名： | 宋广胜 路明 |
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| 作者单位： | 1. 沈阳航空工业学院材料工程系,辽宁,沈阳,110034
2. 中原工业学院机械工程系,河南,郑州,450007 |
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| 摘 要： | 本文提出一种处理铸件与铸型界面热阻问题的虚拟界面单元法，并给出了有限元计算公式。由于该单元厚度（△l）和铸件/铸型的间隙无关，故可取铸件与铸型间接触表面作为界面单元。针对某一具体金属型铝合金活塞的铸造凝固过程，按考虑和不考虑铸件与铸型间热阻影响两种方法作了有限元计算，通过与实测值相比较。本文提出的算法其计算精度远高于不考虑铸件与铸型间热阻影响的计算结果。
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| 关 键 词： | 温度场 铸件 凝固 有限元分析 界面热阻处理 |
| 文章编号： | 1007-1385(2002)04-0020-03 |
| 修稿时间： | 2002年6月11日 |
Deal with interface heat resistance in FE analysis of cast solidification temperature field |
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| SONG Guang-sheng,LU Ming.Deal with interface heat resistance in FE analysis of cast solidification temperature field[J].Journal of Shenyang Institute of Aeronautical Engineering,2002,19(4):20-22. |
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| Authors: | SONG Guang-sheng LU Ming |
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| Institution: | 1 Shenyang Institute of Aeronautical Engineering Liaoning Shenyang 110034;2 Zhongyuan Institute of Engineering Henan Zhengzhou 450007 |
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| Abstract: | To deal with the problem of heat resistance between cast and casting moldintrface, a kind of fictitious interface elements method is created and formulas related are also given. Interface between cast and casting mold is chosen as interface elements because thickness of these elements are not related to the clearance between cast and casting mold. Aim at the solidification process of a piston in metal mold, finite element calculations are respectively made based on taking account of interface heat resistance between cast and casting mold or not . Compared with test results, calculational precision of this method is higher than the correspondence without taking account of interface heat resistance . |
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| Keywords: | interface between cast and casting mold FE method interface heat resistance fictitious interface elements method |
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