爆炸与冲击2026，Vol.46Issue(3)：121-135,15.DOI:10.11883/bzycj-2025-0164
增强内凹蜂窝夹层结构弯曲力学性能及多目标优化设计
Mechanical properties and multi-objective optimization of reinforced re-entrant honeycomb sandwich structures under bending load
摘要
Abstract
The catenary reinforced method can enhance the crashworthiness of re-entrant honeycomb (RH) by avoiding hollow structural characteristics,strengthening negative Poission's ratio effect,and utilizing the high load-bearing effectiveness of catenary structures. Based on the above effects the sandwich beam with reinforced RH (RRH) was proposed. The metallic specimens from the proposed structure were fabricated for three-point bending tests. Results show that the introduced catenary structure can limit the rotation deformation of inclined cell walls around vertices,and the drop in load-bearing force after initial plastic deformation is reduced from 29.3％ to 6.6％. Compared to classical RH cored beams,the maximum load-bearing force and energy absorption of RRH ones can be improved by 26.7％ and 8.9％,respectively. A parametric analysis was conducted to reveal that the thicknesses of front facesheet,back facesheet,and core had a significant effect on deformation behavior and energy absorption of RRH cored sandwich beams. The thickness of front facesheets,cores,and back facesheets was employed as optimization variables,and the mass,maximum load-bearing force,and energy absorption were used as optimization objectives to perform the multi-objective optimization of RRH cored sandwich beams. The optimized sandwich beam exhibits increases of 64.9％ in maximum load-bearing capacity and 46.9％ in energy absorption. The impact resistance of conventional honeycomb sandwich beams under in-plane and out-of-plane loading was compared at identical wall thickness and mass,respectively. Analysis demonstrated the superior energy-absorbing protective performance of the proposed RRH sandwich beams. The research results can provide useful guidance for the reinforcement design of honeycomb cored sandwich beams.关键词
内凹蜂窝/夹层梁/三点弯曲/增强设计/能量吸收Key words
re-entrant honeycomb/sandwich beams/three point bending/reinforcement design/energy absorption分类
数理科学引用本文复制引用
邹震,徐峰祥,方腾源,谢冲,周谦谋..增强内凹蜂窝夹层结构弯曲力学性能及多目标优化设计[J].爆炸与冲击,2026,46(3):121-135,15.基金项目
国家自然科学基金(52475277) （52475277）
湖南大学整车先进设计制造技术全国重点实验室开放基金(32415009) （32415009）
