A Coupled Finite Element-Least Square Point Interpolation Method for the Analysis of Plate Structural-acoustic Coupling Systems
CHEN Ning YU Dejie LV Hui XIA Baizhan
Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (15) : 131-137.
A Coupled Finite Element-Least Square Point Interpolation Method for the Analysis of Plate Structural-acoustic Coupling Systems
In order to improve the accuracy of simulation analysis of plate structural- acoustic coupling systems, the finite element-least square point interpolation method (FE-LSPIM) was extended to solve the plate structural- -acoustic coupling problems and a coupled FE-LSPIM/FE-LSPIM method for the analysis of plate structural- acoustic coupling systems was proposed. In the proposed method, the shape functions of the finite element method and the least square point interpolation method were used for local approximation; the compatibility properties of finite element method and the quadratic polynomial completeness properties of LSPIM were inherited. Thus the accuracy of simulation analysis can be improved. Numerical example of a box structural- acoustic coupled model was presented, which shows that the FE-LSPIM/FE-LSPIM method achieves higher accuracy as compared with FEM/ FEM and SFEM/ FEM for the analysis of plate structural - acoustic coupling problems.
Finite element-least square point interpolation method / Plate structure / Structural- acoustic coupling system {{custom_keyword}} /
/
〈 | 〉 |