...
首页> 外文期刊>Mechanical systems and signal processing >A time series generalized functional model based method for vibration-based damage precise localization in structures consisting of 1D, 2D, and 3D elements
【24h】

A time series generalized functional model based method for vibration-based damage precise localization in structures consisting of 1D, 2D, and 3D elements

机译:基于时间序列广义功能模型的方法,用于在由1D,2D和3D元素组成的结构中基于振动的损伤精确定位

获取原文
获取原文并翻译 | 示例
           

摘要

This study focuses on the problem of vibration-based damage precise localization via data-based, time series type, methods for structures consisting of 1D, 2D, or 3D elements. A Generalized Functional Model Based method is postulated based on an expanded Vector-dependent Functionally Pooled ARX (VFP-ARX) model form, capable of accounting for an arbitrary structural topology. The FP model's operating parameter vector elements are properly constrained to reflect any given topology. Damage localization is based on operating parameter vector estimation within the specified topology, so that the location estimate and its uncertainty bounds are statistically optimal. The method's effectiveness is experimentally demonstrated through damage precise localization on a laboratory spatial truss structure using various damage scenarios and a single pair of random excitation -vibration response signals in a low and limited frequency bandwidth.
机译:这项研究的重点是通过基于数据,时间序列类型,由1D,2D或3D元素组成的结构的方法,对基于振动的损伤进行精确定位的问题。基于扩展的矢量相关功能池ARX(VFP-ARX)模型形式,假定了一种基于通用功能模型的方法,该方法能够解决任意结构拓扑问题。 FP模型的操作参数矢量元素经过适当约束以反映任何给定的拓扑。损伤定位基于指定拓扑内的操作参数矢量估计,因此位置估计及其不确定性范围在统计上是最佳的。该方法的有效性通过在实验室空间桁架结构上使用各种损伤场景以及一对低频率带宽和有限频率带宽的随机激励振动响应信号进行精确损伤定位来实验证明。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号