| 壁厚变形对弯管最小相对弯曲半径的影响 |
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| 引用本文： | 鄂大辛,宁汝新,唐承统,阎艳. 壁厚变形对弯管最小相对弯曲半径的影响[J]. 锻压技术, 2006, 31(1): 90-93 |
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| 作者姓名： | 鄂大辛 宁汝新 唐承统 阎艳 |
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| 作者单位： | 北京理工大学,机械与车辆工程学院,北京,100081 |
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| 基金项目： | 北京市重点学科建设项目 |
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| 摘 要： | 通过实验，分析了管材弯曲外侧的切向和管壁厚方向的应力应变状态，建立了相应的平均应变计算公式，进一步推导出由管材延伸率和拉伸强度所约束的最小相对弯曲半径计算公式。指出管型材料的真实力学性能对于管材弯曲成形性和最小相对弯曲半径的近似计算具有重要影响。
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| 关 键 词： | 管材弯曲 延伸率 拉伸强度 最小相对弯曲半径 |
| 文章编号： | 1000-3940（2006）01-0090-04 |
| 收稿时间： | 2005-02-23 |
| 修稿时间： | 2005-02-23 |
Influence of wall thickness deformation upon the minimum bending radius of bending tube |
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| E Da-xin,NING Ru-xin,TANG Cheng-tong,YAN Yan. Influence of wall thickness deformation upon the minimum bending radius of bending tube[J]. Forging & Stamping Technology, 2006, 31(1): 90-93 |
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| Authors: | E Da-xin NING Ru-xin TANG Cheng-tong YAN Yan |
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| Affiliation: | School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Based on the experiments, the stress-strain state along the tangential direction of outer side of tube bending and the direction of the wall thickness is analyzed and related mean strain calculating formula is also derived. According to that above mentioned, the calculating formula of minimum relative bending radius limited by tube extending rate and extending intensity is deduced. It is pointed out that the authentic mechanical function of tube materials possesses significant influence upon the approximate calculation of the tube bending formation and the minimum relative bending radius. |
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| Keywords: | tube bending extending rate extending intensity minimum relative bending radius |
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