Cross Modal Strain Energy Method for Estimation of Semi-Rigid Joints

Abstract:

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While rigid or pinned assumptions are adopted for steel frames in traditional modeling via finite element method, the actual behavior of the connections is usually neither. Semi-rigid joints enable connections to be modeled as partially restrained, which improves the quality of the model. To identify the connection stiffness and update the FE model, a newly-developed cross modal strain energy (CMSE) method is extended to incorporate the connection stiffness estimation. To illustrate the capability of the proposed parameter estimation and model updating algorithm, a four-story frame structure is demonstrated in the numerical studies. Several cases including Semi-rigid joint(s) on single connection and on multi-connections, are investigated. Numerical results indicate that an excellent updating is achievable and the connection stiffness can be estimated by CMSE method.

Info:

Periodical:

Advanced Materials Research (Volumes 243-249)

Edited by:

Chaohe Chen, Yong Huang and Guangfan Li

Pages:

5386-5393

DOI:

10.4028/www.scientific.net/AMR.243-249.5386

Citation:

S. Q. Wang et al., "Cross Modal Strain Energy Method for Estimation of Semi-Rigid Joints", Advanced Materials Research, Vols. 243-249, pp. 5386-5393, 2011

Online since:

May 2011

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Price:

$35.00

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