Journal Published Online: 10 January 2020
Volume 48, Issue 3

Calibration of Advanced Constitutive Model Using Optimization Techniques

CODEN: JTEVAB

Abstract

Calibrating an advanced constitutive model is not a trivial task. Conventionally, a linear regression is used to calibrate a constitutive model using laboratory data; however, it is not sufficient to identify model parameters. Optimization methods can be used to calibrate the parameters of an advanced constitutive model. The optimization methods, including the DIRECT optimization algorithm, trust-region-reflective least squares, and genetic algorithms, are adopted in this article. The objective function is defined as the sum of the squared distances between laboratory data and model outputs with an appropriate weighting factor for suitable scaling. The use of the three optimization methods is illustrated by calibrating a modified fuzzy set plasticity model using laboratory data.

Author Information

Yeh, Fu-Hsuan
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan
Chuang, Tsan-Shen
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan
Tsai, Fang-Jung
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan
Ge, Louis
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan
Pages: 17
Price: $25.00
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Details
Stock #: JTE20190137
ISSN: 0090-3973
DOI: 10.1520/JTE20190137