汽车空调管路的流固耦合振动特性分析  

Analysis of fluidsolid coupling vibration characteristics of automotive air conditioning pipeline

作　　者：张宁波 黄小如 林祥智 蓝庆祥 ZHANG Ningbo;HUANG Xiaoru;LIN Xiangzhi;LAN Qingxiang

机构地区：[1]广州华立科技职业学院,广东增城511325 [2]东莞市技师学院,广东东莞523466

出　　处：《现代机械》2024年第5期82-86,共5页Modern Machinery

基　　金：2023年广东省普通高校青年创新人才类项目立项,项目编号:2023KQNCX294,项目名称:考虑流固耦合的汽车空调管路振动特性分析。

摘　　要：为研究汽车空调管路的振动特性,对比分析了汽车空调管路在空管和考虑流固耦合特性下两种管路的振动特性。借助有限元分析软件对比分析空管和考虑流固耦合状态下管路系统的固有频率和振型图,根据分析结果可知,在考虑流固耦合后管路的固有频率值有明显的提高;为进一步研究管路振动特性,还对管路进行了谐响应分析,通过分析结果可知,当频率接近5 Hz时,空管和考虑流固耦合管路的振幅达到最大值,即在5 Hz附近容易出现共振现象,因此需要避开这个频率。In order to study the vibration characteristics of the automotive air conditioning pipeline,the vibration characteristics of the empty pipeline and the pipeline when considering fluidsolid coupling are compared and analyzed.The natural frequency and vibration mode diagram of the empty pipeline and the pipeline when considering fluidsolid coupling are compared by using the finite element analysis software.The results show that the natural frequency of the pipeline obviously increases when considering fluidsolid coupling.In order to further study the vibration characteristics of the pipeline,the harmonic response analysis is carried out.The results show that when the frequency is close to 5 Hz,the amplitude of both the empty pipeline and the pipeline when considering fluidsolid coupling reaches the maximum.In conclusion,resonance is prone to occur near 5 Hz,so this frequency needs to be avoided.

关 键 词：低压管 固有频率 流固耦合 谐响应分析 

分 类 号：TG925.12[金属学及工艺—钳工工艺]