TY - JOUR
T1 - Experimental Dynamic Characterization and Finite Element Updating of a Footbridge Structure
AU - Cismasiu, Corneliu
AU - Santos, Filipe Pimentel Amarante dos
AU - Narciso, A. C.
N1 - sem pdf conforme despacho.
Fundacao para a Ciencia e Tecnologia - PTDC/ECM/117618/2010.
PY - 2015
Y1 - 2015
N2 - Nowadays, modern analysis of civil engineering structures implies the use of increasingly sophisticated computer models, designed not only to predict the response of actual structures to different loadings, but also to simulate the effects of eventual modifications in their structural configuration. Nevertheless, it is often discovered that when the numerical simulations are compared with experimental data, the degree of correlation is weak, thus preventing the use of the finite-element (FE) models with confidence in further analyses. In such cases, FE updating techniques are available to correct the FE models, based on dynamic response records of the real structures. These updating processes usually consist of four phases: preliminary FE modeling, experimental modal identification, manual sensitivity analysis and, finally, updating the FE model. The present paper presents all four phases of a successful updating process for the FE model of a footbridge structure. It is shown how the last phase of the process can be performed fully automatically by coupling an optimization routine with a commercial FE analysis program.
AB - Nowadays, modern analysis of civil engineering structures implies the use of increasingly sophisticated computer models, designed not only to predict the response of actual structures to different loadings, but also to simulate the effects of eventual modifications in their structural configuration. Nevertheless, it is often discovered that when the numerical simulations are compared with experimental data, the degree of correlation is weak, thus preventing the use of the finite-element (FE) models with confidence in further analyses. In such cases, FE updating techniques are available to correct the FE models, based on dynamic response records of the real structures. These updating processes usually consist of four phases: preliminary FE modeling, experimental modal identification, manual sensitivity analysis and, finally, updating the FE model. The present paper presents all four phases of a successful updating process for the FE model of a footbridge structure. It is shown how the last phase of the process can be performed fully automatically by coupling an optimization routine with a commercial FE analysis program.
KW - Footbridge structure
KW - Output-only measurements
KW - FE updating
KW - Experimental modal analysis
KW - Experimental modal analysis
KW - Output-only measurements
KW - Finite-element (FE) updating
KW - Footbridge structure
U2 - 10.1061/(ASCE)CF.1943-5509.0000615
DO - 10.1061/(ASCE)CF.1943-5509.0000615
M3 - Article
SN - 0887-3828
VL - 29
JO - Journal of Performance of Constructed Facilities
JF - Journal of Performance of Constructed Facilities
IS - 4
M1 - 04014116
ER -