摘要
借鉴并联弹簧系统的联接机制,基于功能梯度的概念建立了并联梯度蜂窝结构(HPD)的理论和有限元模型。从变形模式、平台应力和吸能性能三方面讨论了梯度系数对HPD面内力学特性的影响。研究结果表明,梯度系数只影响动态压缩下HPD的变形模式。当梯度系数较大时,并联梯度对HPD平台区域有显著提高,能量吸收能力也随之提高。本研究深刻了解并联梯度对HPD内在特性的影响具有十分重要的意义。
Based on the mechanism of parallel spring system,theoretical and finite element models of honeycomb with parallel design(HPD)were created based on the concept of functional gradient.The effects of graded coefficient on the in-plane mechanical properties of HPD,including deformation mode,plateau stress and energy absorption,were discussed.The results show that variation of graded coefficient can influence the deformation modes of HPD only under dynamic compression.When the graded coefficient is relatively large,parallel design can improve the plateau property of HPD.Meanwhile,the energy absorption of HPD is also improved.This research provides deep insight into the in-plane properties of HPD with different graded coefficients.
作者
李振
丁洋
王陶
王良模
LI Zhen;DING Yang;WANG Tao;WANG Liangmo(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2020年第1期155-163,共9页
Acta Materiae Compositae Sinica
基金
江苏省研究生科研创新计划(KYCX17_0335)
中央高校基本科研业务费专项资金(309181B8809)
国家科技重大专项课题(2018ZX04024001)。
关键词
并联梯度布局
面内压缩
蜂窝结构
变形模式
平台应力
能量吸收
有限元分析
parallel graded configuration
in-plane compression
honeycomb
deformation mode
plateau stress
energy absorption
finite element analysis
