王晓明 (教授)

教授   博士生导师   硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:机械工程学院

学科:机械制造及其自动化

办公地点:机械学院338

联系方式:*******

电子邮箱:xiaoming@dlut.edu.cn

当前位置: 中文主页 >> 科学研究 >> 论文成果

Vibration characteristics of periodic structure with micro octagon-like unit cell

点击次数:

论文类型:期刊论文

发表时间:2012-01-01

发表刊物:MECHANIKA

收录刊物:SCIE、EI、Scopus

卷号:18

期号:1

页面范围:72-76

ISSN号:1392-1207

关键字:vibration characteristics; periodic structure with micro octagen-like unit cell

摘要:Encouraged by the fact that dynamic damping systems possess high damping characteristics, the paper aims at researching the effect of weight of the sphere embedded into the unit cell of periodic structures on the vibration characteristics of the structure. Firstly, two periodic structure models with micro octagon-like unit cell are built: one is with a heavy sphere in the unit cell, another is without the sphere. In the unit cell of the two models, all the edges are made of aluminum and all the other areas are filled with rubber. Secondly, the preconditioned conjugate gradient method is applied to solve the vibration problem, thus the displacement transfer function-frequency curves of nodes in models are obtained. Finally, several numerical examples with or without sphere in the unit cell are presented. Simulation results show the periodic structure model with a sphere in the unit cell has the advantage of vibration alleviation; in addition, when the weight of the sphere in the unit cell is chosen properly, the band-gap starting frequency and cut-off frequency can drop sharply, the band gap range can become wider, and effect of vibration alleviation can be improved much better within a given frequency range.

发表时间:2012-01-01

上一条: Sound Absorption Performance of a Vibrating Micro-perforated Plate Periodically Stiffened by Block-like Structures

下一条: Damping characteristic of composite material with periodic micro-tetrahedron structures