Force correction iterative hybrid test method based on adaptive model
Traditional force correction iterative hybrid test method uses a fixed model for restoring force correction,it has the problem of insufficient model accuracy causing increase in iteration rounds.Here,aiming at this problem,a force correction iterative hybrid test method based on adaptive model was proposed.This method could use restoring force correction values of all iteration rounds and true restoring force of physical substructure in each iteration round to build an adaptive model for iterating restoring force correction,and improve iteration's convergence speed and accuracy.Taking a single-layer frame viscous damper seismic reduction structure as an example,effects of different weight distribution coefficients and initial model parameters on iteration convergence speed and accuracy were analyzed.Effects of structural natural vibration periods on this method were analyzed through separately verifying structures with different natural vibration periods.The results showed that different weight distribution coefficients and model parameters more largely affect iteration convergence speed and accuracy;when the weight distribution coefficient is 0.025 and the initial model parameter is 0.80,the proposed method's iteration convergence speed and accuracy are much higher than those of traditional force correction iterative hybrid test method;the force correction iterative hybrid test method based on adaptive model has much better convergence speed and accuracy than traditional force correction iterative hybrid test method in different single-layer frame structures;for structures with a natural vibration period less than 1.0s,the proposed method has more obvious advantages.
iterative hybrid testadaptive model parametersweight distributionforce correction
万方数据
维普
