NEHRP Clearinghouse
- Title
- Identification of Structural Systems from Measured Response.
- File
- PB94162567.pdf
- Author(s)
- Banan, M. R.; Hjelmstad, K. D.
- Source
- National Science Foundation, Arlington, VA.; Army Research Office, Research Triangle Park, NC., May 1993, 181 p.
- Identifying Number(s)
- UILU-ENG-93-2002
- Abstract
- The report presents an approach to the problem of parameter estimation of finite element models of complex structural systems using measured response. The method computes the element constitutive parameters of a finite element model of a structure by finding a constrained nonlinear minimum of the difference between the measured response of the real structure and the computed response of a finite element model of the structure. Constraints are used to bound the constitutive parameters. The optimization problem is solved by the method of Recursive Quadratic Programming. A simple and straightforward method of computing the gradient of the loss function on an element-by-element basis is presented.
- Keywords
- ; Numerical analysis; Timoshenko beam; Mathematical models; Algorithms; Dynamic response; Earthquake engineering; Highway bridges; Quadratic equations; Dynamic structural analysis