摘要
车外噪声是产生环境噪声的重要因素,驾驶室外声场的数值分析能够为控制噪声提供理论参考。介绍外声场分析的边界元法和无限元法两种数值方法的基本理论,研究声固耦合问题分析的流程,包括无限元法与有限元法耦合、有限元法与边界元法耦合。以拖拉机驾驶室模型为例,对驾驶室外声场进行数值分析,分析结果表明两种方法计算的声场结果基本一致,都能有效地分析驾驶室外声场,指导驾驶室结构设计。
The structure borne noise of vehicle is an important factor that produces environmental noise. Exterior acoustic fields analysis could provide theory conference for noise control. The basic theory of the boundary element method （ BEM ） and the infinite element method （IFEM） was introduced, and analysis flow of structural-acoustic couple, including IFEM combined with the finite element method （FEM） and FEM combined with BEM. Both methods are used to solve the exterior acoustic field of tractor cab model. The result of the two methods is almost consistent. Both methods are effective in analyzing the exterior acoustic field of the tractor cab to help structure design.
出处
《机械强度》
CAS
CSCD
北大核心
2012年第3期351-354,共4页
Journal of Mechanical Strength
基金
山东省自然科学基金(ZR2010AL008)
山东省博士后基金(201003012)资助~~
关键词
声场
无限元法
边界元法
声固耦合
Acoustic field
Infinite element method （IFEM）
Boundary element method （BEM）
Structuralacoustic couple
