Simulation calculation method of maximum stress characteristics of high-intensity second-level gradually varied rigidity main and subsidiary springs

Abstract

The invention relates to a simulation calculation method of maximum stress characteristics of high-intensity second-level gradually varied rigidity main and subsidiary springs, and belongs to the technical field of vehicle bearing steel plate springs. By the adoption of the simulation calculation method of the maximum stress characteristics of the high-intensity second-level gradually varied rigidity main and subsidiary springs, simulation calculation can be conducted on the maximum stress characteristics of the high-intensity second-level gradually varied rigidity main and subsidiary springs according to structural parameters, elastic moduli, maximum permissible stresses and no-load loads of all pieces of the main spring and the subsidiary spring and initial tangent arc height design values of the main spring, a first level subsidiary spring and a second level subsidiary spring. It can be known from the simulation and a model machine stress test that, the provided simulation calculation method of the maximum stress characteristics of the high-intensity second-level gradually varied rigidity main and subsidiary springs is correct, and accurate and reliable maximum stress nature simulation calculation values of the main and subsidiary springs can be obtained. By utilizing the method, it can be guaranteed that a designed plate spring meets a stress intensity design requirement, and the design level and the reliability of a product and the vehicle driving safety are improved; meanwhile, the design and test expense is reduced, and the product development speed is accelerated.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, especially a simulation calculation method for the maximum stress characteristic of a high-strength two-stage gradually changing stiffness primary and secondary springs. 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 suspension, so as to further meet the design requirements that the suspension gradient bias frequency remains unchanged under different loads. Among them, the high-strength two-stage gradient stiffness The maximum stress characteristic of the leaf spring has an important influence on the reliability and service life of the leaf spring and the driving safety of the vehicle. Since the maximum stress of the high-strength two-stage gradient stiffness main and auxiliary springs is not only related to the structural parameters and loads of the main spring, the first-l...

AI Technical Summary

Problems solved by technology

Since the maximum stress of the high-strength two-stage gradient stiffness main and auxiliary springs is not only related to the structural parameters and loads of the main spring, the first-level auxiliary spring and the second-level auxiliary spring, but also related to each contact load and the maximum allowable load, therefore, high The calculation of the stress characteristics of the main spring and auxiliary spring with two-stage gradient stiffness of strength is very complicated, and the simulation calculation of the maximum stress characteristic of the high-strength two-stage gradient stiffness leaf spring of a given design structure is also subject to the simulation of the maximum allowable load and contact load Due to the constraints of the calculation problem, therefore, according to the research data, the simulation calculation method of the maximum stress characteristics of the high-strength two-stage gradient stiffness primary and secondary springs has not been given before at home and abroad.

Images