基于响应谱分析的管路系统振动优化设计  

Vibration Optimization Design of Pipeline Systems Based on Response Spectrum Analysis

作　　者：方文杰 梁杰存 庄子宝 吴彦东 龚纯 赵大鹏 FANG Wenjie;LIANG Jiecun;ZHUANG Zibao;WU Yandong;GONG Chun;ZHAO Dapeng(Midea Corporate Research Center,Foshan 528311,Guangdong,China;GD Midea Heating and Ventilating Equipment Co.,Ltd.,Foshan 528311,Guangdong,China)

机构地区：[1]美的集团中央研究院,广东佛山528311 [2]广东美的暖通设备有限公司,广东佛山528311

出　　处：《噪声与振动控制》2022年第3期247-253,共7页Noise and Vibration Control

摘　　要：为改善某款空气能热水器外机的低频噪声,首先采用LMS Testlab测试其管路系统在约束处的时域加速度激励,其次通过软件编程计算在载荷激励下单自由度系统的振动响应谱,之后采用响应谱分析的方法计算管路系统的最大振动响应,最后应用多目标优化技术对回气管与排气管的结构参数进行优化设计,从而改善管路系统的振动传递与外机低频噪声。经过验证:优化后管道的最大振动减小约30%,外机低频峰值噪声减小约10 dB(A),从而建立了一种适合宽频载荷、复杂管路系统响应分析与优化的方法。In order to improve low-frequency noise of the outer unit of an air source water heater,LMS TestLab was used to test the time-domain acceleration at the constraint point of the pipeline system.The vibration response spectrum of a single-DOF system under an excitation load was calculated by software programming.Then,the maximum vibration of the pipeline system was calculated by using response spectrum analysis.Finally,the multi-objective optimization technology was applied to optimize the structural parameters of suction pipe and exhaust pipe so as to improve vibration transmission of the pipeline system and low frequency noise from the outer unit.It was verified that the maximum vibration of the pipeline system was reduced by about 30%and the low frequency peak noise of the outer unit was reduced by about 10 dB(A)after the optimization.Thus,a method suitable for response analysis and optimization of complex pipeline system under wide frequency excitation load has been established.

关 键 词：振动与波 空气能热水器 管路系统 响应谱分析 优化设计 

分 类 号：TB535.1[理学—物理] TH703.63[理学—声学]