复合材料科学与工程Issue(7)：1-11,11.DOI:10.19936/j.cnki.2096-8000.20260728.001
仿龟甲层级吸能结构动态响应数值模拟
Numerical simulations on the dynamic response of bionic-turtle-shell hierarchical sandwich structures
摘要
Abstract
To improve the protective performance of sports helmets against low-velocity concentrated impact loads,a bionic-turtle-shell hierarchical sandwich structure(BHSS)was designed in this paper.Numerical simula-tions were adopted to explore the dynamic response law of BHSS under impact loads,and the effects of carbon fiber lay-up angles,rubber buffer layer thickness,TPMS cell configurations and wall thickness on the punch acceleration response and structural energy absorption characteristics were systematically analyzed.The results show that under the action of 73.98 J impact energy,the dynamic process of punch penetrating BHSS can be divided into five stages:elas-tic deformation,damage initiation,damage aggravation,stiffness strengthening and rebound.The TPMS porous core layer is the core energy-absorbing component of BHSS,with an energy absorption ratio of 63.76%and an overall en-ergy absorption peak value of 63.77 J for the structure.The carbon fiber lay-up angles of cross-ply,angle-ply and quasi-isotropic ply have a weak effect on the energy absorption peak value of BHSS.The rubber buffer layer can ef-fectively reduce the peak impact acceleration,but with an obvious marginal effect.The BHSS with P-type cell config-uration exhibits the optimal comprehensive buffering and energy-absorbing effect,while increasing the cell wall thick-ness will lead to a significant rise in the peak punch acceleration.关键词
仿生夹芯结构/低速冲击/动态响应/结构参数Key words
biomimetic sandwich structure/low-velocity impact/dynamic response/structural parameters分类
通用工业技术引用本文复制引用
张晓刚,崔迪,张昊,沙勇..仿龟甲层级吸能结构动态响应数值模拟[J].复合材料科学与工程,2026,(7):1-11,11.基金项目
甘肃省科技计划(基础研究计划-自然科学基金)项目(23JRRE0736) （基础研究计划-自然科学基金）
甘肃省高校青年博士"入企入园"项目(2026QB-111) （2026QB-111）
甘肃省高校教师创新基金项目(2026A-338) （2026A-338）
甘肃机电职业技术学院校级科研项目(GSJD2024C02) （GSJD2024C02）
