[1]胡永會,吳運新,陳磊,等.基于振動時效仿真的流變塑性模型[J].中國材料進展,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.
點擊復制
基于振動時效仿真的流變塑性模型(
)
中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
-
- 期數:
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2011年第5期
- 頁碼:
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040-45
- 欄目:
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特約研究論文
- 出版日期:
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2011-05-25
文章信息/Info
- Title:
-
Simulation of Vibratory Stress Relief Based on Rheological Plasticity Model
- 作者:
-
胡永會; 吳運新; 陳磊; 郭俊康
-
（中南大學機電工程學院，湖南 長沙 410083）
- Author(s):
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HU Yonghui; WU Yunxin; CHEN Lei; GUO Junkang
-
College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China
-
- 關鍵詞:
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流變塑性; 應力幅; 應變幅; 殘余應力; 峰值應力
- 文獻標志碼:
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A
- 摘要:
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振動時效是一種局部循環塑性現象，當循環載荷與材料內部殘余應力疊加超過材料的局部屈服強度時就會發生殘余應力釋放。采用流變塑性模型對振動時效進行仿真，分析了振動時效過程中應力幅、應變幅、振動頻率、振動周期和材料屈服應力等對振動時效的影響。結果表明，振動時效中應力釋放很大程度上取決于應力幅或應變幅，振動頻率和材料參數也是關鍵因素，而振動周期或時間對振動時效沒有很大影響。將此振動時效模型應用于7075鋁合金試樣機械載荷下的應力松弛實驗，所得結果與仿真較一致。
- 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