STUDY ON FREE VIBRATION ANALYSIS FOR HONEYCOMB SANDWICH STRUCTURE WITH DOUBLE CORES

LU Xiang; YANG JiuYue; WANG RuiPeng; QIAN RuoLi

doi:10.16579/j.issn.1001.9669.2018.05.003

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STUDY ON FREE VIBRATION ANALYSIS FOR HONEYCOMB SANDWICH STRUCTURE WITH DOUBLE CORES

更新时间：2022-09-22

- STUDY ON FREE VIBRATION ANALYSIS FOR HONEYCOMB SANDWICH STRUCTURE WITH DOUBLE CORES
- Journal of Mechanical Strength Vol. 40, Issue 5, Pages: 1030-1036(2018)
- 作者机构：
  
  1. 中国民航大学航空工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.05.003
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LU Xiang, YANG JiuYue, WANG RuiPeng, et al. STUDY ON FREE VIBRATION ANALYSIS FOR HONEYCOMB SANDWICH STRUCTURE WITH DOUBLE CORES. [J]. 40(5):1030-1036(2018)
DOI：

LU Xiang, YANG JiuYue, WANG RuiPeng, et al. STUDY ON FREE VIBRATION ANALYSIS FOR HONEYCOMB SANDWICH STRUCTURE WITH DOUBLE CORES. [J]. 40(5):1030-1036(2018) DOI： 10.16579/j.issn.1001.9669.2018.05.003.

摘要

采用逐层/实体元方法(Layerwise/Solid-Elements,LW/SE)和动态子结构法中的固定界面模态综合法研究了双层蜂窝夹芯结构的自由振动特性问题。基于LW/SE和固定界面模态综合法,分别建立了双层蜂窝夹芯结构的控制方程和总体模态空间,利用控制方程和总体模态空间建立双层蜂窝夹芯结构总体模态空间下的控制方程。方法在保证固有频率计算精度的同时,降低了对计算内存的需求。通过数值算例将方法与三维实体有限元分析结果进行了对比,验证了方法的正确性。

Abstract

The free vibration problem of the honeycomb sandwich structure with double cores was studied based on the Layerwise/Solid-Elements（ LW/SE） and Fixed-interface Modal Synthesis Technique（ FMST） of the dynamic substructure method. The governing equation and the total modal space of the honeycomb sandwich structure were assembled based on LW/SE and FMST,respectively,and the final governing equation on the basis of the modal spaces was assembled based on the governing equation and the total modal space. This method obtains the natural frequency of the honeycomb sandwich structure with double cores accurately and reduces memory requirement. The numerical results of the method are compared with those obtained by the 3D solid finite element,and good agreements are achieved.

关键词

逐层/实体元法固定界面模态综合法动态子结构法蜂窝夹芯结构自由振动

Keywords

Layerwise/Solid-elementsFixed-interface Modal synthesis techniqueDynamic substructure methodHoneycomb sandwich structureFree vibration

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Institute of Applied Mechanics, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology

State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace,Xi′an Jiaotong University

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Advanced Forming and Intelligent Equipment Research Institute, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology

Shanxi Key Laboratory of Material Strength ＆ Structural Impact,Taiyuan University of Technology

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