高压物理学报2026，Vol.40Issue(7)：73-85,13.DOI:10.11858/gywlxb.20261043
基于力学匹配设计的仿生薄壁-泡沫复合结构的分级能量吸收与动态响应
Hierarchical Energy Absorption and Dynamic Response of Bionic Thin-Walled-Foam Composite Structures Based on Mechanical Matching Design
摘要
Abstract
To achieve the synergistic improvement of load-bearing stability and energy absorption in lightweight protective structures,a bio-inspired thin-walled-foam composite structure based on mechanical matching design was proposed.Three configurations of polylactic acid(PLA)bio-inspired shells were fabricated via additive manufacturing,and subsequently filled with polyurethane foam through an in-situ foaming process.Tensile tests,quasi-static compression tests,and drop-weight impact tests were conducted to investigate the foaming-induced thermal effects on the mechanical properties of the PLA shells and the structural response of the composites.Crashworthiness was evaluated using peak crushing force(PCF),plateau force,specific energy absorption(SEA),mean crushing force(MCF),and crushing force efficiency(CFE).Results show that the temperature rise during foaming reduces the elastic modulus and strength of PLA while improving its ductility,thereby enhancing the mechanical compatibility between the shell and foam.Consequently,the composite structures exhibit significantly increased plateau force and MCF,and their collapse mode transforms from local instability to progressive stacked crushing,leading to stable hierarchical energy absorption.Dynamic impact tests further demonstrate the superior load-bearing and energy absorption performance of the composite structures under high-energy impact.The results highlight the synergistic role of geometric configuration,material matching,and thermal-mechanical coupling in regulating the energy absorption behavior,providing guidance for the design of lightweight bio-inspired protective structures.关键词
混合仿生设计/增材制造/薄壁-泡沫复合结构/热-力耦合效应/分级吸能Key words
hybrid biomimetic design/additive manufacturing/thin-walled-foam composite structures/thermal-mechanical coupling effect/hierarchical energy absorption分类
数理科学引用本文复制引用
高丹丹,闫淏,周颖,王涛,黄广炎..基于力学匹配设计的仿生薄壁-泡沫复合结构的分级能量吸收与动态响应[J].高压物理学报,2026,40(7):73-85,13.基金项目
国家自然科学基金(12572427,12372333) （12572427,12372333）
创新研究群体项目(12221002) （12221002）
