In plane impact performance of honeycomb structure with sinusoidal curved edge and negative Poisson's ratio

被引：0
|
作者：
Yu K. [1 ,2 ]
Xu F. [1 ,2 ]
Hua L. [1 ,2 ]
机构：
[1] Hubei Provincial Key Lab of Advanced Technology of Automotive Components, Wuhan University of Technology, Wuhan
[2] Hubei Provincial Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 13期
关键词：
Energy absorption; In-plane impact; Microstructure parameter; Negative Poisson's ratio (NPR); Sinusoidal curve;
D O I：
10.13465/j.cnki.jvs.2021.13.007
中图分类号：
学科分类号：
摘要：
Here, a negative Poisson's ratio honeycomb structure with sinusoidal function curve was proposed. By changing amplitude, cell wall thickness and other microstructure geometric parameters, a parametric sinusoidal negative Poisson's ratio honeycomb structure model was established. Effects of impact velocity and microstructure geometric parameters on in-plane impact deformation mode, dynamic response and energy absorption characteristics of the sinusoidal honeycomb structure were studied. The study results showed that in-plane impact performance of honeycomb structure with sinusoidal negative Poisson's ratio is mainly related to its amplitude, wall thickness and impact velocity; during impacting with medium-low speed, the larger the amplitude, the thicker the cell wall, the more uniform the deformation in structural plane; with increase in impact velocity, increasing amplitude and wall thickness can increase platform stress at impact end to a certain extent; the sinusoidal negative Poisson honeycomb structure with smaller amplitude has stronger energy absorption capacity, it can significantly reduce peak impact force compared with concave hexagonal honeycomb structure. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：51 / 59
页数：8
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