Parametric identification of frame structures using transient strains

被引：0

作者：

Liu, PL ^{[1
]}

Chen, CC ^{[1
]}

机构：

[1] Natl Taiwan Univ, Inst Appl Mech, Taipei 10617, Taiwan

来源：

CHINESE JOURNAL OF MECHANICS-SERIES A | 2000年 / 16卷 / 04期

关键词：

frame; identification; damage assessment; strain; transient test;

D O I：

暂无

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

An inverse method for identifying the element rigidities of frame structures is developed in this paper. The primary input of this method is the longitudinal strains of the frame elements measured in transient tests. The spectral element method is employed to formulate the equilibrium equation of the frame in the frequency domain. The equilibrium equation is rewritten in terms of the strains of the frame elements. The identification problem is then formulated as an optimization program in which the error norm of the equilibrium equation is minimized. The proposed method is applicable to total structure identification as well as substructure identification. The issue of identifiability is addressed in this study. A numerical example is presented to illustrate the proposed method. The influence of noise is investigated through the example.

引用

页码：217 / 225

页数：9

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