FE Model Updating of Continuous Beam Bridge Based on Response Surface Method

Abstract

In this paper, A high-order response surface method is proposed for finite element model updating of continuous beam bridges. Firstly, based on visual inspection and environmental vibration testing, the peak picking (PP) method and random subspace identification (SSI) method are used to identify the dynamic characteristic parameters of the structure. Then, the finite element model of the continuous beam bridge is updated based on the third-order response surface method. It can be concluded that the results of the updated finite element model are in good agreement with the test results, and the maximum error between the calculated and measured frequency is less than 3%, with MAC values greater than 85%. Moreover, the updated finite element model can reflect the current situation of real bridges and serve as the basis for bridge health monitoring, damage detection, and safety assessment.

Optimization of Flotation Conditions for Long-Flame Coal Mud by Response Surface Method

“…The response surface method is to fit the regression equation to obtain the functional relationship between the factors and the response value and adjust the optimization test plan to seek the optimal process parameters. The method is a mathematical statistical method for solving multivariate problems [13]. Studies have shown that the response surface method can be effectively applied to the modeling of the flotation process to improve the efficiency of flotation.…”