Simulation checking calculation method of initial tangent arc heights of equal-thickness main springs of two-stage gradual stiffness plate spring

Abstract

The invention relates to a simulation checking calculation method of initial tangent arc heights of equal-thickness main springs of a two-stage gradual stiffness plate spring, belonging to the technical field of suspension of gradual stiffness plate springs. After the method is adopted, according to the number of the main springs, structure parameters of all the equal-thickness main springs and the design value of a free tangent arc height, simulation checking calculation can be carried out on the initial tangent arc heights of all the equal-thickness main springs after the two-stage gradual stiffness plate spring is assembled and clamped. Prototype tests prove that the simulation checking calculation method of the initial tangent arc heights of the equal-thickness main springs of the two-stage gradual stiffness plate spring is correct, and a reliable technical method is provided for the simulation checking calculation of the initial tangent arc heights of all the equal-thickness mainsprings. The method can be used for obtaining accurate and reliable simulation checking calculation values of the initial tangent arc heights of all the equal-thickness main springs, so that the initial tangent arc height of the first equal-thickness main spring is enabled to meet the design requirement after assembling and clamping are performed, and the design level, reliability and service lifeof the product and vehicle travelling safety are improved; furthermore, the design and test costs of the product are lowered, and the development speed of the product is accelerated.

Description

technical field [0001] The invention relates to a leaf spring with gradually changing stiffness of a vehicle suspension, especially a simulation algorithm for the initial tangent arc height of a two-stage gradually changing stiffness leaf spring of equal thickness. Background technique [0002] In order to meet the design requirements of vehicle ride comfort under different loads, two-stage gradient stiffness leaf springs can be used, that is, between the last leaf of the main spring and the first leaf of the first auxiliary spring, and between the last leaf of the first auxiliary spring and the first leaf of the auxiliary spring. There is a two-stage gradual gap between the first leaves of the second-stage secondary spring. Among them, the most widely used is the equal-thickness main spring type two-stage gradual stiffness leaf spring, that is, the thickness of each leaf of the main spring is equal. In order to improve the strength and service life of the main spring, throu...

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Problems solved by technology

However, according to the research data, it is known that due to the constraints of the simulation calculation of the initial curvature radius of the first equal-thickness main spring after assembly and clamping, the initial tangent arc height of the two-stage gradient stiffness leaf spring equal-thickness main spring has not been given before at home and abroad. simulation algorithm

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