| 焊接过程数值模拟热源模式的比较 |
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| 引用本文： | 陈家权,肖顺湖,吴刚,杨新彦.焊接过程数值模拟热源模式的比较[J].焊接技术,2006,35(1):9-11. |
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| 作者姓名： | 陈家权 肖顺湖 吴刚 杨新彦 |
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| 作者单位： | 广西大学机械工程学院,广西,南宁,530004 |
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| 基金项目： | 广西新世纪十百千人才工程基金 |
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| 摘 要： | 焊接热源模式是焊接数值模拟研究的一个重要内容.文中简要介绍了焊接过程数值模拟热源的各种加载模式:高斯分布函数、双椭球分布函数、生死单元方法.针对具体算例,采用3种不同的热源加载模式进行三维焊接温度场的数值计算,并比较不同方法计算焊接温度场结果的差异.结果表明,生死单元方法是一种简单的热源加载模式,其计算效率优于其他2种加载方法.
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| 关 键 词： | 焊接 高斯热源 双椭球热源 生死单元 有限元 |
| 文章编号： | 1002-025X（2006）01-0009-03 |
| 收稿时间： | 2005-06-15 |
| 修稿时间： | 2005-06-152005-12-05 |
Comparison of heat source models in numerical simulation of welding processes |
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| CHEN Jia-quan,XIAO Shun-hu,Wu Gang,et al..Comparison of heat source models in numerical simulation of welding processes[J].Welding Technology,2006,35(1):9-11. |
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| Authors: | CHEN Jia-quan XIAO Shun-hu Wu Gang |
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| Abstract: | Heat source model is an important aspect in numerical simulation of welding processes.The paper briefly introduces several heat source models in numerical simulation of welding processes,including Gaussian distribution,double-ellipsoid distribution and birth-death element.Numerical computation of 3D welding temperature field distribution is carried out using different heat source models.The differences of the computation results are compared.The results show that birth-death element strategy is a simple model of loading welding heat source,and its analysis efficiency is better than those of the other two models. |
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| Keywords: | welding Gaussian heat source double-ellipsoid heat source birth-death element finite element |
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