[1]高 强,王良模,钟 弘,等.负泊松比结构的三点弯曲性能研究[J].南京理工大学学报(自然科学版),2019,43(02):141.[doi:10.14177/j.cnki.32-1397n.2019.43.02.003]
 Gao Qiang,Wang Liangmo,Zhong Hong,et al.Research of structure with negative Poisson’s ratiounder three-point bending[J].Journal of Nanjing University of Science and Technology,2019,43(02):141.[doi:10.14177/j.cnki.32-1397n.2019.43.02.003]
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负泊松比结构的三点弯曲性能研究()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
43卷
期数:
2019年02期
页码:
141
栏目:
出版日期:
2019-04-26

文章信息/Info

Title:
Research of structure with negative Poisson’s ratiounder three-point bending
文章编号:
1005-9830(2019)02-0141-06
作者:
高 强1王良模1钟 弘1钱雅卉1王晨至2
1.南京理工大学 机械工程学院,江苏 南京 210094; 2.深度工程公司,密歇根 特洛伊 48084,美国
Author(s):
Gao Qiang1Wang Liangmo1Zhong Hong1Qian Yahui1Wang Chenzhi2
1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China; 2.InDepth Engineering Solutions,Limited Liability Corporation,Troy 48084,US
关键词:
内凹六边形结构 负泊松比 三点弯曲 胞元结构
Keywords:
concave hexagonal structure negative Poisson’s ratio three-point bending cellular structure
分类号:
TB332
DOI:
10.14177/j.cnki.32-1397n.2019.43.02.003
摘要:
该文研究了内凹六边形负泊松比结构的三点弯曲力学性能,基于显式动力有限元ANSYS/LS-DYNA建立了该结构的有限元模型,进行了冲击试验仿真,并以单位质量吸能量(SEA)和碰撞力峰值(PCF)为评价指标,探究了胞元结构参数对其性能的影响。研究结果表明,胞元厚度增加或胞元高度降低,可使SEA与PCF同时增加; SEA随着胞元宽度的增大先升高后降低,而PCF则呈相反的趋势; SEA随着胞元内凹角的增大而减小,而PCF在内凹角较小及内凹角约45°时较大。因此,合理选择胞元参数对提高负泊松比结构的弯曲力学性能具有重要意义。
Abstract:
In order to study the crashworthiness of the concave hexagonal structure with negative Poisson’s ratio under three-point bending,the effect of cellular structure parameters including the thickness,the width,the height and the inner concave angle on the performance is focused using the explicit dynamic finite element ANSYS/LS-DYNA. The specific energy absorption(SEA)and the peak crushing force(PCF)are adopted as crashworthiness indices. The results show that the SEA and the PCF increase at the same time with the increase of the thickness of the cell and decrease of the cell height; With the increase of the cell width,the SEA increases first and then decreases,while the PCF presents the opposite trend. The SEA decreases with the increase of the inner concave angle. When the inner concave angle is small or about 45°,the PCF is higher. It is inportant to choose appropriate cellular parameters for improving bending performance of the structure.

参考文献/References:

[1] 王良模,陈东益,袁刘凯,等. 某专用校车顶部安全性能仿真与改进[J]. 南京理工大学学报,2012,36(6):1031-1035.
Wang Liangmo,Chen Dongyi,Yuan Liukai,et al. Simulation and improvement of safety performances of a certain school bus[J]. Nanjing University of Science and Technology,2012,36(6):1031-1035.
[2]刘伟明. 开孔泡沫铝夹芯管压缩与弯曲力学行为的研究[D]. 合肥:合肥工业大学材料学院,2009.
[3]谢中友,虞吉林,李剑荣. 泡沫铝合金填充圆管三点弯曲实验研究[J]. 实验力学,2007,22(2):104-111.
Xie Zhongyou,Yu Jilin,Li Jianrong. Experimental study on three point bending test of foam aluminum alloy filled circular tube[J]. Experimental Mechanics,2007,22(2):104-111.
[4]Chen W. Experimental and numerical study on bending collapse of aluminum foam-filled hat profiles[J]. Int J Solids Struct,2001,38:7919-7944.
[5]ShahBeyk S,Vafai A,Estekanchi H E. A parametric study of the bending crash performance of empty and metal foam-filled box-beams[J]. Int J Crashworthiness,2004,9(6):643-652.
[6]Yin H,Wen G,Hou S,et al. Multiobjective crashworthiness optimization of functionally lateral graded foam-filled tubes[J]. Mater Des,2013,44:414-428.
[7]张新春,刘颖. 具有负泊松比效应蜂窝材料的面内冲击动力学性[J]. 爆炸与冲击,2012,32(5):475-482.
Zhang Xinchun,Liu Ying. The surface impact dynamics of honeycomb materials with negative Poisson’s ratio[J]. Explosion and Shock,2012,32(5):475-482.
[8]杨德庆,马涛,张梗林. 舰艇新型宏观负泊松比效应蜂窝舷侧防护结构[J]. 爆炸与冲击,2015,35(2):243-248.
Yang Deqing,Ma Tao,Zhang Genglin. Ship model macro negative Poisson’s ratio of honeycomb broadside protection structure[J]. Explosion and Shock,2015,35(2):243-248.
[9]刘淼. 凹六边形蜂窝芯材共面缓冲性能的研究[D]. 西安:西安理工大学印刷包装与数字传媒学院,2012.

备注/Memo

备注/Memo:
收稿日期:2018-05-11 修回日期:2018-06-25
基金项目:国家科技重大专项(2018ZX04024001); 江苏省研究生科研创新计划(KYZZ16_0177)
作者简介:高强(1991-),男,博士生,主要研究方向:汽车轻量化,被动安全,E-mail:gaoqiangsir@163.com; 通讯作者:王良模(1963-)男,博士,教授,主要研究方向:汽车轻量化,新能源汽车,E-mail:liangmowang_njust@163.com。
引文格式:高强,王良模,钟弘,等. 负泊松比结构的三点弯曲性能研究[J]. 南京理工大学学报,2019,43(2):141-146.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2019-04-26