Automating the identification of structural model parameters

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6445396

Allen, J J; Martinez, D R

System identification methods are analytical techniques for resolving the correct model form and parametric values. However, for system identification to become a practical tool for engineering analysis, the estimation techniques/codes must communicate with finite element software packages, without intensive analyst intervention and supervision. This paper presents a technique used to integrate commercial software packages for finite element modeling (MSC/NASTRAN), mathematical programming techniques (ADS), and general linear system analysis (PRO-MATLAB). The parameter estimation techniques and the software for controlling the overall system were programmed in PRO-MATLAB. Two examples of application of this software are presented. The examples consist of a truss structure in which the model form is well defined and an electronics package whose model form is ill-defined since it is difficult to model with finite elements. A comparison of the resulting updated models with the experimental data showed significant improvement. 19 refs., 8 figs., 2 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6445396
• Report Number(s): SAND-88-2347C; CONF-8904112-3; ON: DE89006327
• Resource Relation: Conference: 30. structures, structural dynamics and materials conference, Mobile, AL, USA, 3 Apr 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
STRUCTURAL MODELS
COMPUTER ARCHITECTURE
ALGORITHMS
AUTOMATION
COMPUTER-AIDED DESIGN
DESIGN
FINITE ELEMENT METHOD
MATHEMATICAL MODELS
PERFORMANCE
MATHEMATICAL LOGIC
NUMERICAL SOLUTION
990220* - Computers
Computerized Models
& Computer Programs- (1987-1989)
990230 - Mathematics & Mathematical Models- (1987-1989)