2025年07月13日 星期日 首页   |   期刊介绍   |   编 委 会   |   投稿指南   |   期刊订阅   |   弘扬科学家精神专题   |   联系我们   |   English
  2011, Vol. 32 Issue (4): 339-345    
  论文 本期目录 | 过刊浏览 | 高级检索 |
复合材料四面体点阵夹芯梁的自由振动分析
娄佳,,吴林志
哈尔滨工业大学复合材料与结构研究所
Free vibration analysis of all-composite tetrahedral lattice truss core sandwich beam
全文: PDF (940 KB)   HTML (0 KB) 
输出: BibTeX | EndNote (RIS)      
摘要 点阵夹芯结构是一种由上下面板和中间点阵芯子组成的新型轻质多功能结构。由于该结构具有独特的结构形式,其力学特性分析比较复杂。本文将离散的点阵芯子等效为连续均匀材料,研究了复合材料四面体点阵夹芯梁的自由振动特性。考虑面板的弯曲变形和芯子的剪切变形,根据Hamilton变分原理,推导出复合材料点阵夹芯梁的自由振动控制方程。以简支边界条件下的四面体点阵夹芯梁为例,求解出固有频率的理论值,并与有限元结果进行对比,两者吻合较好。讨论了面板铺层顺序、杆件半径、杆件倾斜角度、芯子高度以及梁的长度对夹芯梁固有频率的影响。研究结果对于了解复合材料四面体点阵夹芯梁的频率特性具有一定的指导意义。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
关键词 点阵夹芯结构复合材料自由振动Hamilton变分原理有限元    
Abstract:Lattice sandwich structure,which is characterized by two thin face sheets and a lattice core sandwiched between them, is a novel kind of structure with the features of lightweight and multifunction. Due to its own structural form, the analysis of mechanical behavior of lattice sandwich structure is relatively complex. Converted discrete core to continuum homogenized material, the free vibration of all-composite tetrahedral lattice truss core sandwich beam is studied in this paper. Considering the bending deformation of face sheets and shearing deformation of the core, the governing equation for free vibration of sandwich beam is derived using Hamilton’s principle. Tetrahedral lattice truss core sandwich beam under simply supported condition is taken as an example to calculate the natural frequencies. Theoretical results are compared with those obtained from numerical simulation, and good agreements are observed. Further, the effects of laminate stacking sequence, truss radius, truss inclination angle, core height and beam length on the natural frequencies of sandwich beams are discussed. The results are valuable for understanding the frequency characteristic of all-composite tetrahedral lattice truss core sandwich beam.
收稿日期: 2010-04-21     
通讯作者: 吴林志   
引用本文:   
娄佳;吴林志. 复合材料四面体点阵夹芯梁的自由振动分析[J]. , 2011, 32(4): 339-345.
链接本文:  
http://manu39.magtech.com.cn/Jwk_gtlxxb/CN/     或     http://manu39.magtech.com.cn/Jwk_gtlxxb/CN/Y2011/V32/I4/339
版权所有 © 《》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn