Equi-gradual offset frequency high-strength two-stage gradual rigidity plate spring contact load calculating method

Abstract

The invention relates to an equi-gradual offset frequency high-strength two-stage gradual rigidity plate spring contact load calculating method and belongs to the technical field of vehicle suspension plate springs. The method can achieve calculation of the contact load of equi-gradual offset frequency high-strength two-stage gradual rigidity plate springs according to the structural parameters, the elasticity modulus and the initial designed tangent arc heights of every main spring and every auxiliary spring. Through comparison of calculated value with design required value and sample machine test value, the equi-gradual offset frequency high-strength two-stage gradual rigidity plate spring contact load calculating method is correct and provides reliable technological base for characteristic simulation and verification of equi-gradual offset frequency high-strength two-stage gradual rigidity plate springs. The equi-gradual offset frequency high-strength two-stage gradual rigidity plate spring contact load calculating method can obtain accurate and reliable contact load calculation value, ensure that the characteristics of plate springs can meet design requirements, improves the design level, quality and performance of products, reduces design and test costs and accelerates the development process of products.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a method for checking and calculating the contact load of a plate spring with equal gradient bias frequency, high strength, and two-stage gradient stiffness. 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 of vehicle ride comfort and suspension gradient bias frequency under different loads. Among them, The contact load of the gradient stiffness plate spring affects the stress of the leaf spring, the stress of the main spring and the auxiliary spring, the gradient stiffness, the suspension bias frequency and the ride comfort of the vehicle, and also restricts the high-strength two-stage gradient stiffness plate for a given design structure Spring characteristic simulation verification. Because the cont...

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Problems solved by technology

However, due to the gradual contact between the main spring and the primary secondary spring and the secondary secondary spring, the contact length and the gradual stiffness change with the load. The calculation of the main spring deflection of the high-strength two-stage gradient stiffness leaf spring is very complicated. According to the data, there has been no checking calculation method for the contact load of a leaf spring with equal gradient bias frequency, high strength, and two-stage gradient stiffness at home and abroad.

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