| 基于边光滑有限元法的散射声场数值计算 |
| |
| 引用本文： | 雷明,;李威,;柴应彬,;魏克难.基于边光滑有限元法的散射声场数值计算[J].船海工程,2014(3):55-58. |
| |
| 作者姓名： | 雷明 ;李威 ;柴应彬 ;魏克难 |
| |
| 作者单位： | [1]华中科技大学船舶与海洋工程学院,武汉430074; [2]华中科技大学船舶和海洋水动力湖北省重点实验室,武汉430074 |
| |
| 摘 要： | 针对采用有限元法计算声学问题时,数值离散误差会随计算频率的增加而增加的问题,通过光滑技术对计算域进行重新划分,重新装配总刚度矩阵,适当软化有限元模型刚度,从而有效降低数值离散误差,得到更精确的计算结果。
|
| 关 键 词： | 边光滑有限元法 散射 外域问题 |
Numerical Solution of Scattering Field Based on Edge-Based Smoothed Finite Element Method |
| |
| Institution: | LEI Ming,LI Wei,CHAI Ying-bin,WEI Ke-nan ( a. School of Naval Architecture and Ocean Engineering ; b. Hubei Key Laboratory of Naval Architecture ＆ Ocean Engineering Hydrodynamics, Huazhong University of Science and Technology, Wuhan 430074, China) |
| |
| Abstract: | Aiming at the problems of the numerical dispersion error increases with the computing frequency in acoustic solu -tion by FEM, the edge-based smoothed finite element method （ES-FEM） was used, by which the computing domain was rebuilt and the global stiffness matrix was reassembled , so as to soften the FEM stiffness , reduce effectively the numerical dispersion er-ror to obtain more accurate result . |
| |
| Keywords: | edge-based smoothed finite element method scattering exterior problem |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
