A Performance Simulation Method of Vehicle Hydraulic Shock Absorber

Abstract

The invention relates to a performance simulation method of a vehicle-mounted hydraulic shock absorber. Based on MATLAB software, aiming at valves with different channel cross-section types and sizes, a disc valve opening model is established based on fluid mechanics theory, and the piston is obtained through the disc valve opening model. The opening degree of the valve, and then establish the hydraulic transmission calculation model between the various chambers of the vehicle-mounted hydraulic shock absorber, and calculate the pressure loss caused by the friction between the fluid and the channel, the pressure loss caused by the narrowing of the fluid inflow channel, and the change of the fluid inflow channel. The pressure loss caused by the width and the pressure loss caused by the turning of the channel, and then combined with the opening degree of the piston valve to fit the hydraulic pressure-velocity curve and hydraulic force-displacement curve of the vehicle hydraulic shock absorber, so as to realize the pressure loss of the vehicle hydraulic shock absorber. Performance simulation of a vibrator.

Description

technical field [0001] The invention relates to the field of hydraulic shock absorbers, in particular to a performance simulation method of a vehicle-mounted hydraulic shock absorber. Background technique [0002] At present, the product development process of vehicle shock absorbers uses virtual prototypes to control product performance based on product characteristics. However, the adaptability of virtual prototypes of shock absorbers on the market is too poor. The standard of the piston and valve size is very high, which also limits the application field of the virtual prototype, and the simulation accuracy is also limited by a few adjustable parameters, especially for the use of special valves in order to achieve higher product performance. The piston shock absorber also does not have simulation capabilities. Contents of the invention [0003] The purpose of the present invention is to provide a performance simulation method of a vehicle-mounted hydraulic shock absorb...

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Problems solved by technology

[0002] At present, the product development process of vehicle shock absorbers will use virtual prototypes to control product performance based on product characteristics. However, the adaptability of virtual prototypes of shock absorbers on the market is too poor. The standard of the piston and valve size is very high, which also limits the application field of the virtual prototype, and the simulation accuracy is also limited by a few adjustable parameters, especially for the use of special valves in order to achieve higher product performance. The shock absorber of the piston does not have the simulation ability

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