| U型钢弯曲回弹试验及回弹规律数值分析 |
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| 引用本文： | 王希靖,朱正泽,刘骁,吴红林.U型钢弯曲回弹试验及回弹规律数值分析[J].机床与液压,2011(15). |
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| 作者姓名： | 王希靖 朱正泽 刘骁 吴红林 |
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| 作者单位： | 兰州理工大学有色金属合金及加工教育部重点实验室; |
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| 摘 要： | 通过对25U型钢弯曲回弹前后实际曲率半径与型材弯曲理论公式数值计算结果的对比、分析,结果表明:25U型钢在弯曲半径大于1 000 mm时,随着弯曲半径的减小,所对应回弹量增大,回弹前的弯曲半径与型材弯曲理论公式数值计算结果之间存在很大的误差;当弯曲半径小于1 000 mm时,随着弯曲半径的减小,所对应回弹量变化不大,并且与型材弯曲理论公式数值计算结果之间的误差较小。实际应用中以1 000～2 500 mm曲率半径为主,因此需在这一范围内对型材弯曲理论公式进行修正,修正后的型材弯曲理论公式数值计算结果与实验值相吻合,可以用于计算25U型钢加工设备的控制量,指导实际生产。
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| 关 键 词： | 25U型钢 回弹量 下压量 曲率半径 数值计算 |
Bending Spring-back Test of U-type Steel and Numerical Analysis of Spring-back Law |
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| WANG Xijing,ZHU Zhengze,LIU Xiao,WU Honglin.Bending Spring-back Test of U-type Steel and Numerical Analysis of Spring-back Law[J].Machine Tool & Hydraulics,2011(15). |
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| Authors: | WANG Xijing ZHU Zhengze LIU Xiao WU Honglin |
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| Affiliation: | WANG Xijing,ZHU Zhengze,LIU Xiao,WU Honglin(State Key Laboratory of Gansu Advanced New Nonferrous Metal Materials,Lanzhou University of Technology,Lanzhou Gansu 730050,China) |
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| Abstract: | Through comparison and analysis of the 25U steel actual curvature radius before and after bending spring-back with the numerical computation results by theoretical formula,the results show that,when the bend radius of 25U steel was greater than 1 000 mm,along with the bending radius decreased,the corresponding amount of resilience increased,and between the bending radius before spring-back and the results of theory formula,there was very large error existed.When the bending radius was less than 1 000 mm,wit... |
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| Keywords: | 25U steel Spring-back Press amount Radius of curvature Numerical computation |
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