基于无网格的数值模态匹配法求解消声器声学特性  

Acoustic Attenuation Performance Analysis of Silencers by Using Numerical Mode Matching Method based on MFM

作　　者：左继强 刘成洋[2] 方智[1] ZUO Jiqiang;LIU Chengyang;FANG Zhi(School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;China Ship Development and Design Center, Wuhan 430064, China)

机构地区：[1]华中科技大学船舶与海洋工程学院,武汉430074 [2]中国舰船研究设计中心,武汉430064

出　　处：《噪声与振动控制》2018年第A01期188-192,共5页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(11504119)

摘　　要：应用全局弱式无网格方法求解消声器的横向模态,使用模态匹配技术求解其传递损失。计算了圆形穿孔管阻性消声器的横向模态和传递损失,计算结果与解析方法和有限元方法计算结果吻合较好,且节省计算时间。The transversal modes of silencers are extracted by using the global weak-form mesh-free method（MFM）,and the transmission loss（TL） is calculated by using the mode matching technique. The transversal modes and TL calculation results of a circular perforated dissipative silencer are presented to validate the computational accuracy and the efficiency of the proposed technique.

关 键 词：声学 消声器 横向模态 传递损失 全局弱式无网格方法 模态匹配法 

分 类 号：TB535.2[理学—物理]