An Experimental-Numerical Method for Nonlinear Structural Mechanics

[+] Author and Article Information
F. J. M. Starmans, W. A. M. Brekelmans, J. D. Janssen

Faculty of Mechanical Engineering, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands

J. Appl. Mech 60(4), 875-882 (Dec 01, 1993) (8 pages) doi:10.1115/1.2900996 History: Received March 01, 1991; Revised May 02, 1992; Online March 31, 2008


A maximum likelihood estimator and the finite element method are used to construct a tool for estimating the state of continuous structures from measured structural data. These structural data can, for example, consist of displacements of material points and stresses or strains at material points. The statistical uncertainty of the measured data is supposed to be known. An approximation for the uncertainty of the estimated state can be given. The analyzing tool, elaborated for the geometrically nonlinear rigid plastic case, is useful for evaluation of feasibility and accuracy of experimental set-ups. An example of application of the tool is presented.

Copyright © 1993 by The American Society of Mechanical Engineers
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