| 基于静力等效的喷丸工艺数值模拟 |
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| 引用本文： | 李源,雷丽萍,曾攀.基于静力等效的喷丸工艺数值模拟[J].塑性工程学报,2011,18(3). |
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| 作者姓名： | 李源 雷丽萍 曾攀 |
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| 作者单位： | 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 |
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| 摘 要： | 根据喷丸过程的特点,用静力等效的方法对喷丸强化工艺进行数值模拟,避免了动态显式算法中计算结果的不稳定。分析弹丸与工件之间的平均接触应力的变化规律,对喷丸过程中的不同阶段进行划分,推导了等效载荷的表达式。考虑到弹坑分布对于残余应力的影响,开发了弹坑阵列模型,结果表明,弹坑阵列模型预测的残余应力分布与实际情况相符。
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| 关 键 词： | 喷丸强化 数值模拟 静力等效 残余压应力 |
The numerical simulation of shot peening process with an equivalent static loading method |
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| LI Yuan,LEI Li-ping,ZENG Pan.The numerical simulation of shot peening process with an equivalent static loading method[J].Journal of Plasticity Engineering,2011,18(3). |
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| Authors: | LI Yuan LEI Li-ping ZENG Pan |
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| Affiliation: | LI Yuan1,2 LEI Li-ping1,2 ZENG Pan1,2(1.Key Laboratory of Advanced Materials Processing Technology,Ministry of Education,Beijing 100084 China)(2.Department of Mechanical Engineering,Tsinghua University,Beijing 100084 China) |
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| Abstract: | According to the character of shot peening process,an equivalent static loading method was employed to simulate the shot peening process,which can avoid the unstable factor in the dynamic explicit algorithm.The regularity of the average contact stress between shot and target was analyzed,based on which the shot peening process was divided into several different stages,then the equation of the equivalent static load was obtained.To evaluate the relationship between the indentations' distribution and compress... |
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| Keywords: | shot peening numerical simulation static load equivalent compressive residual stress |
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