检索结果-南通市图书馆

检索条件"主题词=Brace Damage Detection of a Transmission Tower Utilizing Vibration Data"

共 1 条记录，以下是1-10 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

brace damage detection of a transmission tower utilizing vibration data

Brace Damage Detection of a Transmission Tower Utilizing Vib...

The 16th Annual Conference of Hong Kong Society of Theoretical and Applied Mechanics 2012、The 1st Mainland-Hong Kong Youth Forum on Mechanics 2012、The 8th Shanghai-Hong Kong Forum on Mechanics and Its Application 2012

作者： H.F.Lam J.H.Yang Q.Hu H.Y.Peng Department of Civil and Architectural Engineering City University of Hong Kong

transmission towers play a very significant role in the distribution of electrical *** structural health monitoring of transmission towers is an important research *** is impractical and impossible to develop a general method that can detect all kinds of damage for all types of structures. For transmission towers,brace buckling due to strong wind load during typhoon is not uncommon (Yin et al.2009;Lam and Yin 2011).To address this problem,this paper reports a feasibility study on the use of vibration data of transmission tower in the detection of damaged braces by following a model-based *** of the important contributions of this paper is the vibration test of a scaled transmission tower(see Figure 1) under laboratory conditions. Modal identification was carried out by MODE-ID(Beck 1979) and the natural frequencies and mode shapes of the transmission tower were obtained from impact hammer tests.A self-developed MATLAB program is then employed to establish the model-predicted modal parameters of the *** updating was conducted by minimizing the discrepancy between model-predicted and measured modal parameters to identify an "optimal" model to represent the "healthy" transmission *** the experimental verification,different damage patterns were considered by removing different brace *** each damage pattern,the modal parameters of the "damaged" tower were measured by impact hammer *** the model updating of the "damaged" structure,a dimensionless scaling factor is applied on the Young's modulus of each possibly damaged brace *** scaling factor takes a value of 1 to 0.A value of 1 means undamaged and the stiffness of the brace is 100%retrained;A value of 0 means completely damage and 100%loss of stiffness. Those factors will be included in the model updating of the "damaged" *** other words,the updated scaling factors can tell the locations and extents of damage.

关键词： brace damage detection of a transmission tower utilizing vibration data

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

全选清除本页清除全部题录导出标记到“检索档案”

共1页 << < 1 > >>

回到顶部

执行限定条件

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：