Parameter Estimation of Structures from Static Strain Measurements. II: Error Sensitivity Analysis
Publication: Journal of Structural Engineering
Volume 122, Issue 5
Abstract
A method for the parameter estimation of structures was developed in a companion paper. It used subsets of static applied forces and strain measurements and successfully identified structural element stiffnesses. In the presence of noisy measurements, the selection of these subsets drastically affect the accuracy of the parameter estimates. In addition, there are a large number of combinations of applied force and strain measurements to be considered. Therefore, a heuristic method is presented for choosing a small subset of forces and strain measurements so as to have the least sensitivity to measurement noise. Once chosen, using a Monte Carlo analysis the subset of measurements is analyzed to determine an input-output error relationship. This heuristic method can be used to design near-optimal experiments for the nondestructive testing and parameter estimation of structures. A truss and a frame example are presented and a small and noise-tolerant subset of forces and strains is successfully selected for possible nondestructive testing.
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References
1.
Banan, Mo. R., Banan, Ma. R., and Hjelmstad, K. D.(1994). “Parameter estimation of structures from static response. II: Numerical Simulation Studies.”J. Struct. Engrg., ASCE, 120(11), 3259–3283.
2.
DeLorenzo, M. L.(1990). “Sensor and actuator selection for large space structure control.”J. Guidance, 13(2), 249–257.
3.
Haftka, R. T., and Adelman, H. M. (1985). “Selection of actuator locations for static shape control of large space structures by heuristic integer programming.”Comp. and Struct., 20(1–3), 575–582.
4.
Hajela, P., and Soeiro, F. J. (1990a). “Recent developments in damage detection based on system identification methods.”Struc. Optimization, Vol. 2, 1–10.
5.
Hajela, P., and Soeiro, F. J.(1990b). “Structural damage detection based on static and modal analysis.”AIAA J., 28(9), 1110–1115.
6.
Holnicki-Szulc, J., Lopez-Almansa, F., and Rodellar, J.(1993). “Optimal location of actuators for active damping of vibration.”AIAA J., 31(7), 1274–1279.
7.
Kammer, D. C. (1991). “Sensor placement for on-orbit modal identification and correlation of large space structures.”AIAA J., 14(2), 251–259.
8.
Lim, T. W.(1991). “Structural damage detection using modal test data.”AIAA J., 29(12), 2271–2274.
9.
Saletnik, M. J. (1993). “Parameter identification using static strain measurements,” MS thesis, Tufts Univ., Medford, Mass.
10.
Sanayei, M. (1992). “Pre-test selection of static force and displacement measurement locations for damage assessment.”Proc., ASCE Spec. Conf. on Probabilistic Mech. and Struct. and Geotech. Reliability, ASCE, New York, N.Y., 567–570.
11.
Sanayei, M., and Saletnik, M. J.(1996). “Parameter estimation of structures from static strain measurements. I: Formulation.”J. Struct. Engrg., ASCE, 122(5), 555–562.
12.
Sanayei, M., Onipede, O., and Babu, S. R.(1992). “Selection of noisy measurement locations for error reduction in static parameter identification.”AIAA J., 30(9), 2299–2309.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 122 • Issue 5 • May 1996
Pages: 563 - 572
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: May 1, 1996
Published in print: May 1996
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