| 壁厚对金属圆管撕裂卷曲耗能影响的研究 |
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| 引用本文： | 王蕊,秦庆华,程国强,张善元.壁厚对金属圆管撕裂卷曲耗能影响的研究[J].力学学报,2005,37(2):244-248. |
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| 作者姓名： | 王蕊 秦庆华 程国强 张善元 |
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| 作者单位： | 太原理工大学 |
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| 基金项目： | 国家自然科学基金(10472076)
山西省自然科学基金(20031011)资助项目 |
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| 摘 要： | 对置于锥型刚性底座上内径$D$为54.4\,mm的7种不同壁厚A3无缝圆钢管，在轴
压作用下撕裂卷曲破坏进行了较为系统的实验研究. 实验过程中记录了载荷-位移曲线，
并得到试件螺旋状残余变形模态. 对实验结果的分析中认为耗散能主要由撕裂能、塑性弯曲
变形能和摩擦能3部分构成. 分析结果表明，圆管壁厚对撕裂能和塑性弯曲变形能在总能耗
中所占比例的影响较明显，对摩擦能所占比例的影响甚微.
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| 关 键 词： | 金属圆管 塑性卷曲 韧性撕裂 摩擦耗能 吸能装置 |
| 文章编号： | 0459-1879(2005)02-0244-06 |
| 修稿时间： | 2003年12月3日 |
Research for the influence of thickness on the energy distribution of splitting and curling circular steel tube |
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| Wang Rui,Qin Qinghua,Cheng Guoqiang,Zhang Shanyuan.Research for the influence of thickness on the energy distribution of splitting and curling circular steel tube[J].chinese journal of theoretical and applied mechanics,2005,37(2):244-248. |
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| Authors: | Wang Rui Qin Qinghua Cheng Guoqiang Zhang Shanyuan |
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| Abstract: | This paper reports the experimental studies and theoretical analyses on axial splitting and curling of A3 steel tubes with different thickness on a conical die. Seven groups of metal circular tubes, with diameter D = 54.4mm, are used as the text specimens. The force-compression curves and deformation modes of specimens are recorded. Three energy dissipation mechanisms are involved: tearing energy, plastic bending energy and friction energy during the specimens deformation. Theoretical analyses find that the influence of tube-thickness on the ratios of tearing energy and the plastic energy to the total energy is considerable and on the ratio of frictional energy to the total energy is slight. |
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| Keywords: | circular steel tube plastic curl flexible splitting friction consume absorbing-energy equipment |
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