噪声与振动控制2019，Vol.39Issue(1)：1-4,4.DOI:10.3969/j.issn.1006-1355.2019.01.001
空间桁架结构减振设计与试验验证
Vibration Reduction Analysis and Experiment Verification of Spatial Truss Structures
摘要
Abstract
Spatial truss structures usually have the tube members with large stiffness and cantilever end loads. Thus, the traditional method of directly attaching the constraint damping layers to the tube members does not have obvious vibration reduction effect. This article describes a new method. In this method, the long tube member is broken into several short tubes, then the free damping layer is attached to each short tube and finally, these short tubes are connected together by glue to return to the original long tube. This structure has better damping effect and lighter weight than the traditional structure of directly applying the constrained damping layer to the long tube. The optimal structure of the spatial trusses and spatial loads are designed by comparing the damping factors. Using the B&K test system, the data during the vibration test of the original model and the new model of the long tube is acquired. Acceleration response at the points of interest of the spatial truss structure in the three directions of X, Y, Z is obtained. The test results show that the new method is simple and easy to implement, it can effectively reduce the vibration level of the load at the end of the truss, which is of great significance for the vibration damping design of spatial structures.关键词
振动与波/空间桁架结构/黏弹性约束阻尼层/振动特性/加速度响应Key words
vibration and wave/spatial truss structure/viscoelastic constrained damping layer/vibration characteristics/acceleration response分类
通用工业技术引用本文复制引用
骆海涛,富佳,王鹏,王巍,陈宁..空间桁架结构减振设计与试验验证[J].噪声与振动控制,2019,39(1):1-4,4.基金项目
国家自然科学基金资助项目(51505470) （51505470）
中国科学院青年创新促进会 （）
