New method for checking computational dynamic model of steel structure's node

Due to the uncertainty of elastic modulus parameters in welding structure, the divergence, which affects the credibility of computational results directly, is always existed in FE model according to actual structure. In order to solve such problems in FE model, the checking method on time domain was put forward based on the theory of correlativity between models. Firstly, the response sequences were produced by 0-1 time series, then the method of mutual information was used to estimate the correlativity between test model and computational mode. Thus the dynamic characters of steel node structure's computational model can be verified. The results indicate that the method of node response mutual information can reflect the correlativity between the computational model and the actual structure effectively. Based on the above method, a better dynamical computational FE model is obtained.