RSM-based FEM model updating for carbon fiber honeycomb sandwich panel
Qin Yu-ling1; Kong Xian-ren1; Luo Wen-bo2
1 Research Center of Satellite Technology, Harbin Institute of Technology, Harbin, 150001, China;2 China Academy of Space Technology, Beijing, 100086, China
Abstract：The honeycomb sandwich panel with high strength and light weight is a special composite material which is widely used in satellite and other spacecrafts. There are no honeycomb material paremeters in the FEM software such as MSC/NASTRAN and ANSYS, and the simplified equivalent structure parameters of the honeycomb sandwich panel are used to calculate, which results in the differences between the test data and the FEM data. The RSM-based model updating method avoids calling FEM process in every iteration process, which improves the calculation efficiency. The equivalent parameters of the honeycomb sandwich panel are calculated based on the honeycomb sandwich theory, the FEM of the multi-layer carbon fiber sandwich panel is established using SHELL91 in ANSYS, and the test data under all factors and effects are obtained based on uniform design method, the quadratic polynominal response surface model is established and the PSO with mutation factor is used to update the equivalent paremeters of the honeycomb sandwich panel, the updated paremeters are substituted into the FEM and the FEM quality is effectively improved.
2011, Vol. 30 
