Calculation Method of Deflection Characteristics of Non-equal Deviation Frequency Type Three-stage Gradient Stiffness Leaf Spring

Abstract

The invention relates to a calculation method for the deflection characteristics of a non-equal bias frequency type three-stage gradually changing stiffness leaf spring, belonging to the technical field of vehicle suspension leaf springs. According to the structural parameters of the main springs of each piece and the secondary springs at all levels, the clamping distance of the saddle bolts, the elastic modulus, the contact load of each contact load, and the calculation of the three-stage gradient composite clamping stiffness, the non-equal The deflection characteristics of frequency-biased three-stage gradient stiffness leaf springs under different loads were calculated. Through the loading deflection test of the prototype, it can be known that the calculation method of the deflection characteristics of the non-equal bias frequency type three-stage gradient stiffness leaf spring provided by the present invention is correct, which lays a solid foundation for the design of the non-equal bias frequency type three-stage gradient stiffness leaf spring design and CAD software development. an important technical basis. This method can be used to obtain reliable deflection calculation values ​​under different loads, improve the design level, quality and performance of non-equal bias frequency three-stage gradient stiffness leaf springs, and the ride comfort of vehicles; at the same time, reduce design and test costs and speed up Product development speed.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a method for calculating the deflection characteristics of a non-equal bias frequency type three-stage gradient stiffness leaf spring. Background technique [0002] In order to meet the ride comfort of the vehicle under different loads, the main spring and auxiliary spring of the original one-stage gradient stiffness leaf spring can be split into two stages respectively, that is, a three-stage gradient stiffness leaf spring is used; at the same time, in order to ensure the stability of the main spring Stress intensity, usually through the initial tangent arc height of the main spring and the third-level auxiliary spring and the three-level gradual change gap, so that the third-level auxiliary spring can properly bear the load in advance, thereby reducing the stress of the main spring, that is, the non-equal frequency type three-level gradual change stiffness Leaf spring suspens...

AI Technical Summary

Problems solved by technology

However, since the deflection of the non-equal bias frequency type three-stage gradient stiffness leaf spring is not only related to the structure and load of each main spring and three-stage auxiliary spring, but also related to each contact load and gradual tightening stiffness, so , the deflection calculation of non-equal bias frequency three-stage gradient stiffness leaf springs is very complicated. According to the research data, no calculation method for the deflection characteristics of non-equal bias frequency three-stage gradient stiffness leaf springs has been given before at home and abroad, which cannot satisfy Design and CAD Software Development Requirements of Non-equal Deviation Frequency Type Three-Stage Gradual Stiffness Leaf Spring

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