Volume 37 Issue 11
Nov.  2011
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Qin Yuling, Kong Xianren, Luo Wenboet al. Finite element model updating of airplane wing based on Gaussian radial basis function response surface[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(11): 1465-1470. (in Chinese)
Citation: Qin Yuling, Kong Xianren, Luo Wenboet al. Finite element model updating of airplane wing based on Gaussian radial basis function response surface[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(11): 1465-1470. (in Chinese)

Finite element model updating of airplane wing based on Gaussian radial basis function response surface

  • Received Date: 14 Jul 2010
  • Publish Date: 30 Nov 2011
  • The benchmark finite element model(FEM) of the airplane wing was constituted using the three-dimensional solid element SOLID45 in ANSYS, and the uniform design method was employed to group the structure parameters to calculate the corresponding modal frequencies of each set of parameters, then the Gaussian radial basis function(RBF) response surface was constituted, the coefficients of which were fitted by the least square method(LSM), and the fitting precision was evaluated. The non-updated FEM was obtained by adding perturbation to the structure parameters of the benchmark FEM, and the fitness function was constituted based on the difference between the modal frequencies of the benchmark FEM and the Gaussian radial basis function(RBF) response surface, which guided the particle swarm optimization(PSO) algorithm with chaos-search mechanism to search for the perturbation of the structure parameters, the optimal solution was substituted into the non-updated FEM and then the updated FEM was obtained, the validity of the updated FEM is approved by comparing the similarity of the modal frequencies of the updated FEM and the benchmark FEM in and out of the test range.

     

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