Calculation method for deformation of annular elastic valve plate of shock absorber

Abstract

The invention relates to a calculation method for deformation of an annular elastic valve plate of a shock absorber. The calculation method is characterized in that the method comprises the steps of 1) determining constant terms formed by valve plate deformation coefficients; 2) calculating a valve plate deformation coefficient Gr at any position with radius r; and 3) calculating valve plate deformation fr at any position with radius r. The calculation method for the deformation of the annular elastic valve plate of the shock absorber provided by the invention uses a valve plate mechanical model under uniform pressure, gives out the deformation coefficient Gr at any position with radius r of the valve plate according to the inner radius, the outer radius, the elastic model and the Poisson ratio of the annular elastic valve plate, and can accurately calculate the deformation of any position with radius r of the valve plate by using the deformation coefficient of the position with radius r of the valve plate. By making a comparison with an ANSYS simulation verification result, the method is accurate and reliable and an accurate and reliable valve plate deformation calculation method is provided for the modern CAD (Computer-Aided Design) design and property simulation of the shock absorber.

Description

technical field [0001] The invention relates to a hydraulic shock absorber, in particular to a calculation method for the deformation of an annular elastic valve plate of the shock absorber. Background technique [0002] At present, there is no accurate and reliable design method for the valve plate thickness design of the cylinder hydraulic shock absorber in foreign countries. Most of them first determine a valve plate thickness value based on experience, and then finally determine the design parameters through repeated tests, verification and modification methods. The main reason is the lack of an accurate and reliable calculation method for the deformation of the annular elastic valve plate of the shock absorber. Therefore, it is difficult to establish an accurate mathematical model for the thickness design of the shock absorber valve plate and the simulation of the shock absorber characteristics. The annular elastic valve plate of the shock absorber is the most critical ...

AI Technical Summary

Problems solved by technology

However, previous domestic and foreign calculations for the deformation of the annular elastic valve plate of the shock absorber have not been able to provide accurate and reliable calculation methods. Simulation, although an approximate numerical solution can be obtained, it cannot provide an analytical calculation formula and calculation method for the deformation of the annular elastic valve plate that meets the requirements of shock absorber design and characteristic simulation

Although the "Mechanical Design Manual" provides the maximum deflection calculation formula, an approximate deflection coefficient can only be obtained from the manual based on the ratio of the inner and outer radii of the valve plate, and the approximate calculation of the maximum deflection of the valve plate cannot be performed. The amount of deformation at the radius position is calculated

Although many experts have used the perturbation theory to study the deformation calculation of the valve plate, they have not provided an analytical formula for calculating the deformation of the valve plate at any radial position.

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