| Theoretical study and numerical simulation of the stress fields of the Al2O3 joints brazed with composite filler materials |
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| 作者姓名： | 杨建国 姬书得 方洪渊 |
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| 作者单位： | [1]State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin, 150001 [2]Institute of Astronautical Technology, Shenyang Institute of Aeronautical Engineering, Shenyang, 110034 |
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| 摘 要： | Non-linear finite element code MSC. Marc was utilized to analysis the field of stress of the Al2O3 joints brazed with composite filler materials. The properties of the filler materials were defined by using the mixing law, method of Mori-Tanaka and theory of Eshelby to ensure the accuracy and reliability of results of finite element method （FEM）. The results show stress in brazed beam is higher than that in base material. The maximal stress can be found in the interface of joint. And the experimental results show that the shear strength of joints increases from 93.75 MPa （ Al2O3p Ovol. % ） to 135.32 MPa （ Al2O3p 15vol. % ） when composition of titanium is 3wt% in the filler metal.
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| 关 键 词： | 黄铜接头 有限元 残余压力 数值模拟 氧化铝 复合材料 |
Theoretical study and numerical simulation of the stress fields of the Al2O3 joints brazed with composite filler materials |
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| Yang Jianguo,Ji Shude,Fang Hongyuan.Theoretical study and numerical simulation of the stress fields of the Al2O3 joints brazed with composite filler materials[J].China Welding,2006,15(3):74-78. |
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| Authors: | Yang Jianguo Ji Shude Fang Hongyuan |
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| Affiliation: | 1. State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology,Harbin, 150001
2. Institute of Astronautical Technology, Shenyang Institute of Aeronautical Engineering, Shenyang, 110034 |
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| Abstract: | Non-linear finite element code MSC.Marc(c) was utilized to analysis the field of stress of the Al2O3 joints brazed with composite filler materials.The properties of the filler materials were defined by using the mixing law, method of MoriTanaka and theory of Eshelby to ensure the accuracy and reliability of results of finite element method (FEM).The results show stress in brazed beam is higher than that in base material.The maximal stress can be found in the interface of joint.And the experimental results show that the shear strength of joints increases from 93.75 MPa ( Al2O3p 0vol.%) to 135.32 MPa ( Al2O3p 15vol.% ) when composition of titanium is 3wt% in the filler metal. |
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| Keywords: | composite filler materials brazed joints finite element method residual stress |
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