| 基于指数强化模型的预拉力影响角型材拉弯的回弹分析 |
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| 引用本文： | 于成龙,王俊彪,王永军.基于指数强化模型的预拉力影响角型材拉弯的回弹分析[J].材料科学与工艺,2011,19(1):131-134,138. |
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| 作者姓名： | 于成龙 王俊彪 王永军 |
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| 作者单位： | 北京航空航天大学机械工程及自动化学院;西北工业大学机电学院; |
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| 基金项目： | 国家高技术研究发展计划资助项目(2001AA421130) |
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| 摘 要： | 为从理论上研究预拉力对角型材拉弯回弹的影响,采用指数强化材料模型,在分析角型材截面应力应变分布的基础上,建立了型材转台式拉弯解析模型.分析讨论了预拉力对角型材截面应力分布和加载弯矩的影响规律,并计算得到了回弹角随预拉力变化的规律曲线.与采用双线性强化材料模型的解析计算结果比较表明:采用指数强化材料模型计算的回弹结果与实...
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| 关 键 词： | 回弹 解析模型 转台武拉弯 预拉力 |
The analysis on the effect of pre-stretch force on spring-back of rotary stretch bending of L-section extrusions based on power-law hardening model |
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| YU Cheng-long,WANG Jun-biao and WANG Yong-jun.The analysis on the effect of pre-stretch force on spring-back of rotary stretch bending of L-section extrusions based on power-law hardening model[J].Materials Science and Technology,2011,19(1):131-134,138. |
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| Authors: | YU Cheng-long WANG Jun-biao and WANG Yong-jun |
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| Affiliation: | YU Cheng-long1,WANG Jun-biao2,WANG Yong-jun2(1.School of Mechanical Engineering and Automation,Beihang University,Beijing 100083 China,2.School of Mechatronics,Northwestern Polytechnic University,Xi'an 710072 China) |
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| Abstract: | To theoretically study of pre-stretch force effect on spring-back of L-section extrusions in rotary stretch bending,an analytical model of stress and strain distributions in section is presented with using power-law harden material constitutive model.The variations of stress distributions with pre-stretch force in section are analyzed and discussed as well as applied bending moment,and also a curve that spring-back angle varying with pre-stretch force is presented.The results compared with experimental data... |
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| Keywords: | spring-back analytical model rotary stretch bending pre-stretch force |
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