类蜂窝夹层结构振动特性分析及应用研究
陈永清1,2，仇琨2，李响1,2
（1.三峡大学 水电机械设备设计与维护湖北省重点实验室，湖北 宜昌 443002；2.三峡大学 机械与动力学院，湖北 宜昌 443002）
摘要：对新型类蜂窝夹层结构进行了振动特性研究，运用Hoff理论对类蜂窝夹层结构进行振动特性分析，计算类蜂窝夹层结构在四边简支边界条件下的振动固有频率方程解。并用有限元软件ABAQUS进行振动模态分析与理论值进行对比，结果表明误差保持在10%以内，吻合度较好，检验了理论公式的可行性。在此基础上研究类蜂窝夹芯壁厚和面板与夹层板厚度比等结构参数对类蜂窝夹层结构固有频率的影响。进一步研究类蜂窝夹层结构的优良性，在蜂窝夹芯胞元数量、材料、边界约束以及其他相关参数相同的条件下，与六边形和正方形蜂窝夹芯结构相比，仿真结果表明：根据蜂窝夹芯结构的整体振动固有频率和振动位移等仿真数据，可知类蜂窝夹层结构的性能更好，并与某型号电动车车身零件频率对比，由仿真数据表明：可应用在此车底盘甲板中。振动分析对未来的蜂窝夹层结构设计具有重要意义，扩展了蜂窝结构在工程振动方面的应用。
关键词：类蜂窝夹层结构；固有频率；夹芯壁厚；模态分析
中图分类号：TB333 文献标志码：A doi：10.3969/j.issn.1006-0316.2022.01.002
文章编号：1006-0316 (2022) 01-0009-08
Vibration Characteristics Analysis and Application Research of Honeycomb-Like Sandwich Structure
CHEN Yongqing1,2，Qiu Kun2，Li Xiang1,2
( 1.Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang 443002, China; 2.College of Mechanical and Power Engineering, China Three Gorges University, Yichang 443002, China )
Abstract：In this paper, the vibration characteristics of a new honeycomb-like sandwich structure are studied, and the natural frequency equation of the honeycomb-like sandwich structure simply supported with four sides is calculated by using HOFF theory. The vibration modal analysis is carried out with finite element software ABAQUS and the comparison with theoretical value is made. The results show that the error is kept within 10% and the coincidence degree is good, which verifies the feasibility of the theoretical formula. On this basis, the effects of structural parameters, such as wall thickness of honeycomb-like sandwich and thickness ratio of panel to sandwich on the natural frequency of honeycomb-like sandwich structure, are studied. Further study is carried out on the superiority of honeycomb-like sandwich structure. The simulation results show that, compared with hexagonal and square honeycomb-like sandwich structure, with the same number of cells, materials, boundary constraints and other related parameters of honeycomb-like sandwich structure, the performance of the honeycomb-like sandwich structure is better, regarding the natural vibration frequency and vibration displacement. Compared with the frequency of the body parts of a certain type of electric vehicle, the simulation data shows that the honeycomb-like sandwich structure can be used in the chassis deck of the vehicle. Vibration analysis is of great significance to the design of honeycomb sandwich structures in the future, which expands the application of honeycomb structures in engineering.
Key words：honeycomb-like sandwich structure；natural frequency；sandwich wall thickness；the modal analysis
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收稿日期：2021－07－02
基金项目：国家自然科学基金青年科学基金（51305232）
作者简介：陈永清（1965－），男，湖北麻城人，高级工程师、副教授，主要研究方向为工程施工特种、工程机械的设计，水电施工专业设备的设计，E-mail：cyq@ctgu.edu.cn。
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