Model updating hybrid simulation test method based on uniform design

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (21) : 9-16.

CHEN Zaixian, ZHONG Weipeng, LI Qinming

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Abstract

With increase in DOFs, substructure number and updating parameters in hybrid simulation tests, sample points and computational amount needed to search more optimal parameters for model updating hybrid simulation tests can obviously increase.Here, from the perspective of testing design, a model updating hybrid simulation test method based on uniform design was proposed.Based on tested substructures, the uniform design was used to construct a sample space of checking substructures.Taking restoring force as an objective, the most suitable numerical model of checking substructures for tested substructures was found as the source of updating constitutive parameters of the studied numerical structure to effectively improve the identification efficiency.Considering different constitutive models of steel products and bending moment processing situations at boundaries of tested substructures, a single-span two-story steel frame structure was taken as an example to do 4 types of numerical simulations.The model updating hybrid simulation tests adopted Matlab-OpenSees mixed programming, and the software data interaction adopted socket interface.The efficiency was improved effectively compared with the traditional text read-write interaction.Results showed that the proposed method is suitable for different boundary processing situations; the model updating calculation time is reduced greatly, and the accuracy of the proposed hybrid simulation tests is improved effectively.

Key words

hybrid simulation test / model updating / uniform design / substructure / OpenSees

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CHEN Zaixian, ZHONG Weipeng, LI Qinming. Model updating hybrid simulation test method based on uniform design[J]. Journal of Vibration and Shock, 2020, 39(21): 9-16

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