噪声与振动控制2012，Vol.32Issue(3)：55-58,77,5.DOI:10.3969/j.issn.1006-1355.2012.03.013
粘弹性阻尼器对网架结构振动疲劳寿命的影响
Effects of Viscoelastic Dampers on Vibration Fatigue Behavior of Steel Trusses
孙天夫 1林皋 1李建波 1于雅鑫2
作者信息
- 1. 大连理工大学建设工程学部,辽宁大连116024
- 2. 大连理工大学电子信息学院,辽宁大连116024
- 折叠
摘要
Abstract
In order to study the effects of viscoelastic dampers on fatigue behavior of steel trusses, the equivalent stiffness of viscoelastic dampers was derived. Based on random load, and according to load's power spectral density(PSD), structure' s frequency response and the structure' s modal, the fatigue behavior of the steel trusses were calculated and compared. These working conditions included that there was no viscoelastic damper added to the structure and that there were viscoelastic dampers with different damping coefficients respectively added to the structure. The result indicates that viscoelastic dampers can extend the structure's fatigue lifespan efficiently. It is found that with the increase of the damping coefficient, the structure's fatigue lifespan increases at first and decreases thereafter. Therefore structure's fatigue resistant ability can be optimized through the best choice of the damping coefficients.关键词
振动与波/阻尼器/模拟/疲劳Key words
vibration and wave / damper/ simulation / fatigue分类
建筑与水利引用本文复制引用
孙天夫,林皋,李建波,于雅鑫..粘弹性阻尼器对网架结构振动疲劳寿命的影响[J].噪声与振动控制,2012,32(3):55-58,77,5.
