Structural characteristic responses for finite element model updating of structures

Linren Zhou; Lei Wang; Jinping Ou

doi:10.1117/12.2053352

10 April 2014 Structural characteristic responses for finite element model updating of structures

Linren Zhou, Lei Wang, Jinping Ou

Proceedings Volume 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014; 90614C (2014) https://doi.org/10.1117/12.2053352
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

The field measurements of structures are very important to the structural finite element (FE) model updating because the errors and uncertainties of a FE model are corrected directly through closing the discrepancies between the analytical responses from FE model and the measurements from field testing of a structure. Usually, the accurate and reliable field measurements are very limited. Therefore, it is very important to make full use of the limited and valuable field measurements in structural model updating to achieve a best result with the lowest cost. In this paper, structural FE model updating is investigated in the point of view of solving a mathematical problem, and different amount and category of structural dynamic responses and static responses are considered as constraints to explore their effects on the updated results of different degree and types of structural damages. The numerical studies are carried out on a space truss. Accounting for the numerical results, some inherent phenomena and connections taking account of the updating parameters, output responses and the updated results are revealed and discussed. Some useful and practicable suggestions about using the field measurements for FE model updating are provided to achieve efficient and reliable results.

Citation Download Citation

Linren Zhou, Lei Wang, and Jinping Ou "Structural characteristic responses for finite element model updating of structures", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90614C (10 April 2014); https://doi.org/10.1117/12.2053352

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KEYWORDS

Data modeling

Mathematical modeling

Finite element methods

Civil engineering

Optimization (mathematics)

Error analysis

Inverse problems

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