[1]胡永会,吴运新,陈磊,等.基于振动时效仿真的流变塑性模型[J].中国材料进展,2011,(5):040-45.
HU Yonghui,WU Yunxin,CHEN Lei,et al. Simulation of Vibratory Stress Relief Based on Rheological Plasticity Model[J].MATERIALS CHINA,2011,(5):040-45.
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基于振动时效仿真的流变塑性模型(
)
中国材料进展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
-
- 期数:
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2011年第5期
- 页码:
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040-45
- 栏目:
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特约研究论文
- 出版日期:
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2011-05-25
文章信息/Info
- Title:
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Simulation of Vibratory Stress Relief Based on Rheological Plasticity Model
- 作者:
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胡永会; 吴运新; 陈磊; 郭俊康
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（中南大学机电工程学院，湖南 长沙 410083）
- Author(s):
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HU Yonghui; WU Yunxin; CHEN Lei; GUO Junkang
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College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China
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- 关键词:
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流变塑性; 应力幅; 应变幅; 残余应力; 峰值应力
- 文献标志码:
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A
- 摘要:
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振动时效是一种局部循环塑性现象，当循环载荷与材料内部残余应力叠加超过材料的局部屈服强度时就会发生残余应力释放。采用流变塑性模型对振动时效进行仿真，分析了振动时效过程中应力幅、应变幅、振动频率、振动周期和材料屈服应力等对振动时效的影响。结果表明，振动时效中应力释放很大程度上取决于应力幅或应变幅，振动频率和材料参数也是关键因素，而振动周期或时间对振动时效没有很大影响。将此振动时效模型应用于7075铝合金试样机械载荷下的应力松弛实验，所得结果与仿真较一致。
- Abstract:
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Vibratory stress relief (VSR) is a localized cyclic plasticity phenomenon,and residual stress relief occurs when the vector superposition of induced cyclic stress and residual stress exceeds the local yield stress of the material.Simulations of Vibratory stress relief were processed by a rheological plasticity model,in which the effects of dynamic stress amplitude,dynamic strain amplitude,vibration frequency,vibration cycle and material yield stress on VSR were analyzed......
更新日期/Last Update:
2011-07-06