| 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. DOI: 10.6052/0459-1879-2005-2-2003-470 |
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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： | 太原理工大学应用力学研究所,太原,030024;太原理工大学应用力学研究所,太原,030024;太原理工大学应用力学研究所,太原,030024;太原理工大学应用力学研究所,太原,030024 |
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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： | 2003-12-03 |
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. DOI: 10.6052/0459-1879-2005-2-2003-470 |
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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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