Analysis of fluidsolid coupling vibration characteristics of automotive air conditioning pipeline
In order to study the vibration characteristics of the automotive air conditioning pipeline,the vibration characteris-tics of the empty pipeline and the pipeline when considering fluidsolid coupling are compared and analyzed.The natural fre-quency 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 re-sponse 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 oc-cur near 5 Hz,so this frequency needs to be avoided.
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