Vibration Control And Optimization Design Of Radiator For Fracturing Vehicle

With the development of the industrial development of shallow shale gas resources to deep shale gas resources,there are higher requirements on the scale and displacement of fracturing equipment,which leads to more and more prominent vibration problems in the working process of fracturing truck.As one of the important components of fracturing truck,the radiator of fracturing truck plays a role in absorbing and emitting a large amount of heat generated in the working process of fracturing truck.In order to ensure the stability of fracturing truck working environment,its service life directly affects the normal operation of fracturing truck,therefore,the main research content of this paper is as follows:Firstly,in view of the vibration of the radiator under the working state of the fracturing truck,the vibration test of the main position of the radiator was carried out to study the vibration response law of the time-domain characteristics and frequency domain characteristics of the measuring points.The radiator fan simulation model was established to simulate the rotation of the fan,and the dynamic characteristics of the fan from acceleration to steady rotation were analyzed.The amplitude-frequency characteristics of the acceleration were obtained according to the analysis of the simulation data.The radiator dynamics model was preliminarily established to verify the vibration test results by comparing with the results of the vehicle vibration test.Secondly,ADAMS simulation software was used to build a radiator dynamic model to simulate and analyze the radiator vibration response.Combined with the test data results,the causes of radiator vibration anomaly were compared and analyzed,and the inherent characteristics and vibration decoupling rate of radiator suspension system were studied.The optimization goal was to improve the decoupling rate of radiator suspension system.Using Isight multi-objective optimization algorithm to optimize the system parameters.Thirdly,the dynamics model of the radiator support was established by Workbench simulation software.Considering the actual load condition of the radiator support,the dynamic characteristics of the radiator support were analyzed,and the vibration rule of the radiator support under the working state of fracturing truck was studied,which provided the direction for the subsequent structural optimization of the radiator support.Finally,taking the radiator support as the research object,on the premise of considering the stiffness and strength of the body,based on the multi-objective genetic algorithm,taking the thickness of the pipe beam of the radiator support as the design objective,the size of the radiator support was optimized to reduce the acceleration amplitude at the radiator leg and the overall mass of the radiator support.