| 自蔓延焊接温度场及残余应力场有限元分析 |
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| 引用本文： | 陈威,李运良,孙长青. 自蔓延焊接温度场及残余应力场有限元分析[J]. 机械工程师, 2005, 0(4): 36-38 |
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| 作者姓名： | 陈威 李运良 孙长青 |
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| 作者单位： | 1. 装甲兵工程学院,北京,100072;法尔胜集团公司,博士后工作站,江苏,江阴,214433
2. 装甲兵工程学院,北京,100072 |
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| 基金项目： | 国家自然科学基金资助项目(50275149)，总装维修改革基金资助项目(2001CX15) |
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| 摘 要： | 在无电无气的状态下，自蔓延焊接依靠自身化学还原反应生成铁水，通过加入合金元素形成多种合金，可应用于装甲装备的战场战伤应急焊接抢修。文中就如何预测自蔓延焊接强度问题，利用有限元法中分步载荷和热-结构耦合法进行自蔓延焊接过程的模拟。分析了随焊接同步加压和不加压两种情况下自蔓延焊接的温度场、残余应力场强相互关系，并得出了加压对焊接的残余应力场影响不太，但可以大幅度提高焊接强度的结论。
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| 关 键 词： | 自蔓延焊接 温度场 残余应力场 焊接强度 |
| 文章编号： | 1002-2333(2005)04-0036-03 |
| 修稿时间： | 2005-01-05 |
The Finite Element Simulation of the Welding Temperature Field and the Remain Stress Field of Self-Propagation Welding |
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| CHEN Wei,LI Yun-liang,SUN Chang-qing. The Finite Element Simulation of the Welding Temperature Field and the Remain Stress Field of Self-Propagation Welding[J]. Mechanical Engineer, 2005, 0(4): 36-38 |
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| Authors: | CHEN Wei LI Yun-liang SUN Chang-qing |
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| Affiliation: | CHEN Wei1,2,LI Yun-liang1,SUN Chang-qing1 |
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| Abstract: | In the condition of no electricity and no gas the self-propagation welding depends on chemistry response which creates huge quantity of heat to release the liquid state iron which can be mixed with the alloy elements to form the alloy, and can be used in rush to repair. This paper utilizes step loads and heat-frame coupling to resolves the question of the weak of intension of self-propagation welding, analysis having-press and no-press circs the temperature field and the remain stress field, and the relation between them. Conclude that having-stress can enhance the intension but no enhance the remain stress evident. |
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| Keywords: | self-propagation seal temperature field remain stress field the intension of welding |
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