轻质高强类蜂窝夹层结构力学性能分析及优化
李响1,2，潘志宇2，李锐2，徐兴兴2
（1.三峡大学 机器人与智能系统宜昌市重点实验室，湖北 宜昌 443002；2.三峡大学 机械与动力学院，湖北 宜昌 443002）
摘要：创新构形类蜂窝夹层结构相比于传统六边形蜂窝夹层结构，具有更好的力学性能。本文以类蜂窝夹层结构的面板层厚度tf、夹芯层厚度c及胶粘剂层厚度ta为优化参数，采用多目标遗传算法对类蜂窝夹层结构各项力学性能进行优化设计。分析了各厚度参数对夹层结构的力学性能的影响情况，同时探讨了参数协同作用下，各层厚度对力学性能的敏感程度，并根据实际工程应用情况对优化解进行折中选择。研究发现：与优化前的初始值比较，优化后的类蜂窝夹层板在x轴向等效弹性模量增长了8.17%，z轴向等效弹性模量增长了63.08%，xz面内等效剪切模量增长了19.82%，xy面内等效剪切模量减小了26.11%，弯曲刚度增长了45.31%，扭转刚度增大了69.83%，总重量减小了8.26%，较好地改善类蜂窝夹层结构的各项力学性能。该研究为夹层板结构优化设计提供了一定的参考依据，具有重要的创新意义和实用价值。
关键词：类蜂窝；夹层结构；力学性能；优化设计
中图分类号：TB303 文献标志码：A doi：10.3969/j.issn.1006-0316.2021.11.001
文章编号：1006－0316 (2021) 11－0001－09
Parameter Analysis and Optimization Design of Light-Weight and High-Strength Honeycomb Sandwich Structure
LI Xiang1,2，PAN Zhiyu2，LI Rui2，XU Xingxing2
( 1.The Yichang Key Laboratory of Robotics and Intelligent Systems, China Three Gorges University, Yichang 443002, China; 2. The School of Mechanical and Power Engineering, China Three Gorges University, Yichang 443002, China )
Abstract: Compared with the traditional hexagonal honeycomb sandwich structure, the innovative configuration honeycomb sandwich structure has better mechanical properties. However, the research work on the overall mechanical properties of the honeycomb-like sandwich structure has not yet been carried out. In this paper, the panel layer thickness tf of the honeycomb-like sandwich structure, the sandwich layer thickness c, and the adhesive layer thickness ta are the optimization parameters, and the multi-objective genetic algorithm is used to optimize the mechanical properties of the honeycomb-like sandwich structure. The influence of each thickness parameter on the mechanical properties of the sandwich structure is analyzed. At the same time, the sensitivity of
the thickness of each layer to the mechanical properties under the synergistic effect of the parameters is discussed, and the optimal solution is selected according to the actual engineering application. The study found that, compared with the initial value before optimization, the optimized elastic modulus of the honeycomb-like sandwich panel increased by 8.17% in the x-axis direction, and the equivalent elastic modulus in the z-axis direction increased by 63.08%, which is equivalent in the xz plane. The shear modulus increased by 19.82%, the equivalent shear modulus in the xy plane decreased by 26.11%, the bending stiffness increased by 45.31%, the torsional stiffness increased by 69.83%, and the total weight decreased by 8.26%. The mechanical properties of the honeycomb-like sandwich structure have been improved. This research provides reference for the structural optimization design of sandwich panels and has important innovative and practical significance.
Key words：honeycomb-like；sandwich structure；mechanical properties；optimized design
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收稿日期：2021－06－16
基金项目：国家自然科学基金青年科学基金（51305232）；湖北省教育厅科学技术研究计划重点项目（D20181206）；机器人与智能系统宜昌市重点实验室（三峡大学）开放基金（JXYC00015）
作者简介：李响（1979－），男，湖北黄梅人，博士，副教授、硕士生导师，主要研究方向为轻量化技术、结构优化设计、数值模拟技术、结构强度与可靠性等，E-mail：lixiangcfy@ctgu.edu.cn。
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