| 弹丸束喷丸有限元模型数值模拟及试验研究 |
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| 引用本文： | 李源,雷丽萍,曾攀.弹丸束喷丸有限元模型数值模拟及试验研究[J].机械工程学报,2011,47(22). |
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| 作者姓名： | 李源 雷丽萍 曾攀 |
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| 作者单位： | 清华大学先进成形制造教育部重点实验室 北京 100084;清华大学机械工程系 北京 100084 |
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| 基金项目： | 国家自然科学基金资助项目(51175293) |
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| 摘 要： | 喷丸工艺是一种有效提高工件表面疲劳抗力的表面处理工艺,被广泛应用在航空、汽车、动力机械等重要领域。喷丸数值模拟是制订喷丸工艺方案、评估喷丸后工件表面疲劳抗力的主要理论工具。目前,现有的喷丸数值模型主要有单弹丸模型、阵列弹丸模型等形式,在这些模型中,弹丸的撞击位置是固定的,忽略了真实的喷丸过程中弹丸位置的随机性。采用有限元计算软件ABAQUS提供的python语言开发一种弹丸在空间位置随机分布的弹丸束喷丸模型,在此模型基础上研究喷丸工艺参数与残余应力间的分布规律,进一步讨论喷丸工艺对工件表面粗糙度的影响,模拟喷丸强度的饱和过程,并通过Q235钢喷丸试验对弹丸束喷丸模型进行验证,为喷丸工艺的精确控制提供了科学依据和理论基础。
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| 关 键 词： | 喷丸 残余压应力 弹丸束喷丸模型 喷丸强度 |
Shot Stream Finite Element Model for Shot Peening Numerical Simulation and Its Experiment Study |
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| LI Yuan,LEI Liping,ZENG Pan.Shot Stream Finite Element Model for Shot Peening Numerical Simulation and Its Experiment Study[J].Chinese Journal of Mechanical Engineering,2011,47(22). |
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| Authors: | LI Yuan LEI Liping ZENG Pan |
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| Affiliation: | LI Yuan1,2 LEI Liping1,2 ZENG Pan1,2(1.Key Laboratory of Advanced Materials Processing Technology of Ministry of Education,Tsinghua University,Beijing 100084,2.Department of Mechanical Engineering,Beijing 100084) |
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| Abstract: | Shot peening is a surface treatment process to significantly improve fatigue resistance of the peened part,which is widely used in aerospace,automotive,power machinery and other important areas.Shot peening numerical simulation is the main theoretical tool for designing shot peening process and evaluating the fatigue resistance after shot peening.At present,single shot and array shot model are the main numerical models in which the shots' impact locations are defined beforehand,and the random property of th... |
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| Keywords: | Shot peening Compressive residual stress Shot stream model Almen intensity |
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