单层铝合金空间网格结构的阻尼特性

郭小农,张锦东,罗晓群,王丽

振动与冲击 ›› 2021, Vol. 40 ›› Issue (24) : 119-127.

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PDF(3175 KB)
振动与冲击 ›› 2021, Vol. 40 ›› Issue (24) : 119-127.
论文

单层铝合金空间网格结构的阻尼特性

  • 郭小农,张锦东,罗晓群,王丽
作者信息 +

Damping characteristics of single-layer aluminum alloy reticulated spatial structures

  • GUO Xiaonong,ZHANG Jindong,LUO Xiaoqun,WANG Li
Author information +
文章历史 +

摘要

对4个已建成的单层铝合金空间网格结构进行现场激励,获取了结构的加速度响应曲线。对各加速度响应曲线进行模态参数识别,分析铝合金空间网格结构的阻尼比变化规律。分析结果表明,随着加速度幅值的增加,此类结构的阻尼特性呈现三阶段变化规律。本文的研究成果可为类似结构的阻尼矩阵构造、工程设计和动力分析提供参考。

Abstract

Field modal tests were carried out on four single-layer aluminum alloy reticulated spatial structures to obtain the acceleration response of the structures. The modal parameters of acceleration response were identified and the damping ratio of aluminum alloy reticulated spatial structures was analyzed. The analysis results showed that as the acceleration amplitude increases, the damping characteristics of this type of structure presented three-stage change rule. The research results of this paper can provide references for the damping matrix construction, engineering design and dynamic analysis of similar structures.

关键词

铝合金结构;空间网格结构 / 模态参数识别;阻尼特性

Key words

modal parameter identification / reticulated spatial structure / aluminum alloy structure / damping characteristics

引用本文

导出引用
郭小农,张锦东,罗晓群,王丽. 单层铝合金空间网格结构的阻尼特性[J]. 振动与冲击, 2021, 40(24): 119-127
GUO Xiaonong,ZHANG Jindong,LUO Xiaoqun,WANG Li. Damping characteristics of single-layer aluminum alloy reticulated spatial structures[J]. Journal of Vibration and Shock, 2021, 40(24): 119-127

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