Stiffness characteristic simulating calculation method for high-strength two-level gradually changing stiffness plate spring

Abstract

The invention relates to a stiffness characteristic simulating calculation method for a high-strength two-level gradually changing stiffness plate spring, and belongs to the technical field of vehicle suspension steel plate springs. Clamping stiffness characteristics of the high-strength two-level gradually changing stiffness plate spring under different loads can be calculated in a simulating manner according to structural parameters of main springs and auxiliary springs, elastic modulus, rated load, initial tangent arc height design values of the main springs and initial tangent arc height design values of the first-level auxiliary spring and the second-level auxiliary spring. According to simulation, model machine loading deformation and stiffness test verification, the stiffness characteristic simulating calculation method for the high-strength two-level gradually changing stiffness plate spring is correct. By the method, accurate and reliable clamping stiffness characteristic simulating calculation values can be acquired, and the plate spring can meet the design requirement of clamping gradually changing stiffness characteristics, so that product design level, quality, performances and vehicle driving smoothness are improved. Besides, design and experiment expenses are reduced, and product development is accelerated.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, especially a simulation calculation method for stiffness characteristics of a high-strength two-stage gradually changing rigidity leaf spring. 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 stiffness characteristics of gradient stiffness leaf springs under different loads not only affect the initial tangent arc height of the leaf spring, the remaining tangent arc height under rated load, and the design of the maximum limit deflection, but also affect the gradient stiffness of the leaf spring, suspension deflection Frequency and ride comfort of the vehicle. Since the stiffness of the high-strength two-stage gradual st...

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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 deflection characteristics of the high-strength two-stage gradient stiffness leaf spring with a given design structure, it is also restricted by the key issue of contact load simulation calculation. Simulation Calculation Method of Stiffness Characteristics of Leaf Spring with Two-Stage Gradient Stiffness

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