Simulating calculation method for offset frequency characteristic of high-strength two-stage gradual change stiffness leaf spring suspension system

Abstract

The invention relates to a simulating calculation method for the offset frequency characteristic of a high-strength two-stage gradual change stiffness leaf spring suspension system, and belongs to the technical field of vehicle suspension steel plate springs. By the adoption of the method, the offset frequency characteristic of the high-strength two-stage gradual change stiffness leaf spring suspension system can be subjected to simulating calculation according to the structural parameters of all main springs and auxiliary springs, the elasticity modulus, the initial tangent line camber height design values of the main springs and the auxiliary springs, no-load conditions and rated loads. As can be known from prototype simulation and vehicle riding comfort experiments, the provided simulating calculation method for the offset frequency characteristic of the high-strength two-stage gradual change stiffness leaf spring suspension system is correct, and the suspension offset frequency simulation calculation value under a given load is matched with an experimental testing and verification value. By the adoption of the method, an accurate and reliable suspension offset frequency simulation calculation value can be obtained, and the effect that a leaf spring can meet the design requirements of the suspension offset frequency characteristic is guaranteed, so that the product design level, quality and performance together with the vehicle riding comfort are improved; and meanwhile, design and experimental expenses are reduced, and the product development speed is increased.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a simulation calculation method for the offset frequency characteristic of a high-strength two-stage gradient-stiffness leaf spring suspension system. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength two-stage gradient stiffness leaf springs can be used for vehicle suspensions, so as to further meet the design requirements that the gradient bias frequency of the suspension remains unchanged under different loads. Among them, the high-strength two-stage gradient stiffness The offset frequency characteristics of leaf spring suspensions under different loads have an important impact on the ride comfort and safety of vehicles. Because the stiffness of the high-strength two-stage gradient stiffness leaf spring is not only related to the structural parameters of the main spring, the primary and secondary secondary springs, but als...

AI Technical Summary

Problems solved by technology

Since the stiffness of the high-strength two-stage gradual stiffness leaf spring is not only related to the structural parameters of the main spring, the first-level auxiliary spring and the second-level auxiliary spring, but also related to each contact load, and the contact length and gradual stiffness during the gradual contact process Both change with the load, so the calculation of the stiffness characteristics of the high-strength two-stage gradient stiffness leaf spring is very complicated

For the simulation calculation of the bias frequency characteristics of the high-strength two-stage gradient stiffness leaf spring suspension system with a given design structure, it is also restricted by the key problem of contact load simulation calculation. Simulation Calculation Method for Bias Frequency Characteristics of High-strength Two-Stage Gradual Stiffness Leaf Spring Suspension System

Images