Abstract:Aiming at the study of pressure pulsation in the hydraulic flow tube, the calculation method of the fluid pressure pulsation and the calculation model of the fluidstructure coupling analysis of the pipeline were proposed. The fluid pressure pulsation was programmed to obtain the change of exciting force caused by pressure pulsation. The pipeline and fluid solid models were established, the UDF technology was used to compile the pulsating pressure into the fluid, then the fluid solid coupling transient mechanics analysis was carried out.The research results show that the pressure pulsation is attenuated along the pipeline, and the exciting force generated by the pulsation is relatively large to the bend. The pressure generated by the fluid in the elbow section is concentrated, which in turn causes the deformation of the bend section larger than the different diameter section. The pressure pulsation is loaded into the pipeline, which has certain reference value for the study of the pipeline.