[1]李 振,王亚进,刘经兴,等.胞元缺失对蜂窝结构面内力学性能的影响[J].南京理工大学学报(自然科学版),2019,43(05):541-547.[doi:10.14177/j.cnki.32-1397n.2019.43.05.001]
 Li Zhen,Wang Yajin,Liu Jingxing,et al.Influence of missing cell on in-plane dynamic behavior of honeycomb[J].Journal of Nanjing University of Science and Technology,2019,43(05):541-547.[doi:10.14177/j.cnki.32-1397n.2019.43.05.001]
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胞元缺失对蜂窝结构面内力学性能的影响()
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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05期
页码:
541-547
栏目:
出版日期:
2019-10-31

文章信息/Info

Title:
Influence of missing cell on in-plane dynamic behavior of honeycomb
文章编号:
1005-9830(2019)05-0541-07
作者:
李 振王亚进刘经兴王良模
南京理工大学 机械工程学院,江苏 南京 210094
Author(s):
Li ZhenWang YajinLiu JingxingWang Liangmo
School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
关键词:
胞元缺失 蜂窝结构 缺陷 面内力学性能 吸能性能 抗冲击性能
Keywords:
missing cells honeycomb defects in-plane dynamic behavior energy absorption capacity impact resistance capacity
分类号:
TH123; O347
DOI:
10.14177/j.cnki.32-1397n.2019.43.05.001
摘要:
为了研究胞元缺失对蜂窝结构面内力学行为的影响,建立了负泊松比蜂窝结构有限元模型,并验证了模型的可靠性。对缺失比例及缺陷类型对蜂窝结构的面内力学性能的影响进行了比较分析。通过分析含缺陷蜂窝结构在特定等效应变下的蜂窝结构变形模式、归一化塑性能量损耗以及它们在相同归一化初始动能条件下的抗冲击能力等,讨论了蜂窝结构对缺失比例和缺陷类型的敏感程度。结果表明,在低速(2 m/s)压缩情况下,胞元缺失比例和缺陷类型均对蜂窝结构的塑性能量损耗有显著影响。但随着压缩速度的增大,这种影响逐渐减弱。另外,胞元缺失对蜂窝结构的抗冲击性能也有影响。该文研究可为蜂窝材料的工程设计提供参考。
Abstract:
In order to figure out the influences of missing cells on the in-plane dynamic behavior of the auxetic honeycomb,a finite element model is built and validated. In-plane dynamic crushing analysis under various conditions of defective size and shape are conducted. The sensitive analysis is performed by discussing the deformation mode,normalized plastic energy dissipation and impact resistance capacity of the defective honeycombs. The results show that the honeycombs are sensitive to both the defective size and shape at the low compression speed(2 m/s). The influence of weakens as the crushing velocity increases. In addition,the impact resistance capacity of honeycomb is also influenced by defects. This research provides useful references for the honeycomb in the field of engineering design.

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相似文献/References:

[1]王宗千,钱明军,周云波,等.帕累托最优在新型蜂窝结构吸能盒防撞 性能中的应用[J].南京理工大学学报(自然科学版),2016,40(05):599.[doi:10.14177/j.cnki.32-1397n.2016.40.05.016]
 Wang Zongqian,Qian Mingjun,Zhou Yunbo,et al.Application of Pareto optimality in crashworthiness of honeycomb structure crash box[J].Journal of Nanjing University of Science and Technology,2016,40(05):599.[doi:10.14177/j.cnki.32-1397n.2016.40.05.016]

备注/Memo

备注/Memo:
收稿日期:2018-09-20 修回日期:2018-11-11
基金项目:国家自然科学基金(51675281); 江苏省研究生科研与实践创新计划项目(KYCX18_0387)
作者简介:李振(1991-),男,博士生,主要研究方向:结构力学,E-mail:zhen_li@njust.edu.cn; 通讯作者:王良模(1963-),男,博士,教授,主要研究方向:汽车CAE技术,E-mail:liangmowang_njust@163.com。
引文格式:李振,王亚进,刘经兴,等. 胞元缺失对蜂窝结构面内力学性能的影响[J]. 南京理工大学学报,2019,43(5):541-547.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2019-11-30