| 摘要: |
| 采用ANSYS有限元数值模拟软件,运用瞬态非线性分析的方法,模拟出以Ag-Cu-Ti为钎料的金刚石与硬质合金钎焊接头的焊后应力场,并预报出钎缝厚度对钎焊接头应力大小和分布的影响,从而分别得出焊后金刚石层、钎料层与硬质合金区域的应力场分布,通过对应力场彩云图以及数据组的综合分析,找到焊后应力集中的危险区域;在数控真空钎焊炉中进行钎焊试验,由于施加压力的不同,得出钎缝厚度不同的焊接试件。而后进行抗剪强度试验,得出了钎料层厚度并不是越厚越好,而是存在一个最佳值的规律,计算所得规律与试验结果基本吻合。 |
| 关键词: ANSYS 有限元 焊接应力 |
| DOI： |
| 分类号: |
| 基金项目:黑龙江省自然科学基金资助项目(E01-21) |
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| Stress field analysis of brazed joint between diamond and hard alloy |
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XU Chao, SUN Feng lian, QIN You qiong, MENG Zi ge
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Harbin Uninersity of Siance and Technology, Harbin 150080, China
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| Abstract: |
| Using ANSYS finite element software,the stress field of brazed joint which brazing filler metal is Ag-Cu-Ti was simulated between diamond and hard alloy by the means of the transient nonlinear analysis,it is predicted that the filler metal thickness has effect on residual stress and its distribution.Accordingly,the stress field of the region of diamond,filler metal and hard alloy is obtained and then the danger region in stress field is found by the analysis to various data groups.The brazing experiment is finished in vacuum furnace,the brazed joints with different filler metal thickness are obtained by different pressure on them.The shearing strength tests indicate it isn't that the more the thickness of filler metal is,the less stress in the filler metal is.The optimum thickness of filler layer exists.The experiment results agree with the calculated results. |
| Key words: ANSYS finite element welding stress |
