A study on springback of profile plane stretch–bending in the loading method of pretension and moment
A study on springback of profile plane stretch–bending in the loading method of pretension and moment
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预拉力和力矩加载法中型面拉伸弯曲回弹的研究
DOI：
10.1016/j.ijmecsci.2013.06.008
复制
发表时间：
2013-10
影响因子：
7.3
通讯作者：
Ma, Rui
中科院分区：
文献类型：
--
作者：
Zhao, Jun;Zhai, Ruixue;Qian, Zhiping;Ma, Rui
回弹规律和回弹预测一直是型材拉弯加工领域的难点。由于拉弯柔性制造的迫切需求，针对给定截面型材的拉弯回弹研究已不能满足要求。本文以任意截面的型材为研究对象。在预拉弯法中，根据经典的弹塑性理论和应变叠加的特点，建立了型材拉弯的力学模型。讨论了应力应变在截面上的不同分布状态，给出了区分不同分布状态的方法。给出了求解任意截面型材平面拉弯回弹的通用解析方法。以U型截面和矩形截面两种典型型材为例，验证了理论分析。理论分析、数值研究和实验研究得到的拉伸弯曲回弹规律吻合较好。本研究为拉弯柔性制造提供了理论基础，具有一定的理论和工程指导价值。
The springback law and springback prediction are always the difficulties in the field of profile stretch–bending processing. Because of the urgent demand for stretch–bending flexible manufacturing, the study on stretch–bending springback aiming at the profile with a given cross-section cannot meet the requirement. In this paper, the profile with any cross-section was taken as the study object. In the loading method of pretension and moment, the mechanical models of profile stretch–bending were established based on the classical elastic–plastic theory and the characteristic of strain superposition. Different distribution states of stress and strain on cross-section were discussed, and the method of discriminating different distribution states was given. The universal analytic method of solving the plane stretch–bending springback of profile with any cross-section was obtained. Two kinds of typical profiles with U-section and rectangular section were taken as examples to verify the theoretical analysis. The stretch–bending springback laws obtained by theoretical analysis, numerical research and experimental research agreed well. This study provides a theoretical foundation for stretch–bending flexible manufacturing and has certain theoretical and engineering guidance value.
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DOI：
10.1016/s0890-6955(97)00008-4
发表时间：
1998
影响因子：
14
作者：
A. El-Domiaty;A. A. Elsharkawy-A.
通讯作者：
A. El-Domiaty;A. A. Elsharkawy-A.
DOI：
--
发表时间：
2008
期刊：
Journal of Plasticity Engineering
影响因子：
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通讯作者：
Zhong Zhi-hua
DOI：
10.1016/0890-6955(95)00035-6
发表时间：
1996-05
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
--
作者：
A. El-Domiaty;M. Shabara;M. Al-Ansary
通讯作者：
A. El-Domiaty;M. Shabara;M. Al-Ansary
DOI：
--
发表时间：
2007
期刊：
Engineering mechanics
影响因子：
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作者：
Zhang Dong-juan
通讯作者：
Zhang Dong-juan
L型材旋转拉弯过程回弹的理论分析
DOI：
10.1016/s1003-6326(11)61113-8
发表时间：
2011-12
影响因子：
4.5
作者：
Yu Chenglong;Li Xiaoqiang
通讯作者：
Li Xiaoqiang