Application of the cross-entropy method to estimate stiffness distribution in plate-type structures

Title: Application of the cross-entropy method to estimate stiffness distribution in plate-type structures
Authors: Walsh, Brian J.
González, Arturo
Cantero, Daniel
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Date: Sep-2010
Abstract: This paper examines the use of the cross-entropy (CE) method to estimate the structural parameters of a plate structure, given data from a simulated non-destructive static loading test. Finite element models of plates are created, with properties close to that of a bridge of similar dimensions. Damage is introduced to the models by local reductions in the longitudinal Young’s modulus (Ex). In practice, reduced values of Ex may result from material irregularities, poor construction methods and structural degradation due to weathering and/or impact. By assembling combinations of Ex values, the CE method searches the solution space of possible combinations of Ex values. The location and severity of the damage is varied to test the ability of the algorithm to identify different damage events.
Type of material: Conference Publication
Publisher: Civil-Comp Press
Copyright (published version): 2010 Civil-Comp Press and Saxe-Coburg Publications
Keywords: Cross-entropyStiffness estimationDamage detectionStructural health monitoringFinite element modelling
DOI: 10.4203/ccp.93.51
Language: en
Status of Item: Peer reviewed
Conference Details: The Tenth International Conference on Computational Structures Technology, CST2010, Valencia, Spain, 14-17 September, 2010
Appears in Collections:Civil Engineering Research Collection

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