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| 不同能量密度的环件惯性摩擦焊接过程数值模拟 |
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刘伟伟1,2, 张立文1,2, 张全忠1,2, 祝文卉3, 曲伸3
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1.大连理工大学三束材料改性国家重点实验室, 辽宁大连 116024;2.大连理工大学材料科学与工程学院, 辽宁大连 116024;3.沈阳黎明航空发动机(集团)有限责任公司, 沈阳 110043
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| 摘要: |
| 建立了GH4169合金大型环形件的惯性摩擦焊接轴对称热力耦合分析模型,运用大变形弹塑性有限元法分析了能量密度对惯性摩擦焊接温度场、应力场以及焊接时间和轴向缩短量的影响。结果表明,能量密度与焊接时间呈近似的线性关系,随着能量密度的增加,焊接时间逐渐增加,轴向缩短量也以更快的速率增大;在焊接过程的同一时刻,能量密度越高,焊接面的温度越高,飞边越大,飞边的弯曲程度越高。计算数据与试验数据吻合良好。 |
| 关键词: 惯性摩擦焊接 GH4169合金 能量密度 数值模拟 |
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| Numerical simulation of effect of different energy density on inertia friction welding process |
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LIU Weiwei1,2, ZHANG Liwen1,2, ZHANG Quanzhong1,2, ZHU Wenhui3, QU Shen3
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1.State-Key Laboratory for Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116024, Liaoning, China;2.School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;3.Shenyang Liming Aero-Engine Group Corporation, Shenyang 110043, China
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| Abstract: |
| An axisymmetric model of inertia friction welding process was established. By using finite element method of large elastic-plastic deformation, the effect of energy density on the temperature field, stress field, welding time and axial shortening was analyzed during inertia friction welding process. Result showed that the relationship between the energy density and the welding time was approximately linear. And the welding time as well as the axial shortening increased with the energy density. Furthermore increasing the energy density produced an increase in the temperature of the interface and also an increase in the flash generated during the welding process. The calculated data of the welding time and axial shortening during welding were in good agreement with the measured data. |
| Key words: inertia friction welding GH4169 alloy energy density numerical simulation |
