A model updating method for truss structure using stepwise uniform design schemes considered primary factors

Abstract

Based on the feasibility and reliability of a forward analytical model updating method with uniform design having been proven, this paper studies the effectiveness of the method in the condition that structural measured information is uncertain and incomplete. By taking the experimental data of a steel truss as an example, this paper studies the method of experimental data processing, the determination of structural model with unknown parameters, the interval estimation of identification results and stepwise uniform design considered the correlation among identification parameters. The results show that the errors between the numerical results computed by the updated model and the experimental data are acceptable, which means the method in this paper is feasible and reliable. In the end, based on our experiences and lessons, we summarize a model updating method for complex structures using stepwise uniform design schemes considered the primary and secondary factors, and expound its computational steps.

Application of Uniform Design Method in the Optimization of Hydrothermal Synthesis for Nano MoS2 Catalyst with High HDS Activity

“…The other advantage is high representativeness of trials in the studied experimental domain. The successful application of this methodology has been well documented in many fields [24,25]. For instance, through the usage of uniform design, Li, et al succeeded in establishing a significant linear relationship between deposition efficiency, oxide content, microhardness, fracture toughness and process parameters within 10 trials when preparing titanium nitride coatings [26].…”

A Model Updating Method for Plate Elements Using Particle Swarm Optimization (PSO), Modeling the Boundary Flexibility, Including Uncertainties on Material and Dimensional Properties

“…The beam elements' stiffness was updated to adjust the model's natural frequencies. Zhang et al (2014) also used the model updating technique to adjust the deflection of a truss. The stiffness of the joints was determined as the correction factors and the deflection of the updated model, applying stepwise uniform design, was compared to the experimental data.…”