Method for designing optimal damping characteristics of shock absorber of vehicle steel plate spring suspension system

A leaf spring and suspension system technology, applied in the direction of spring/shock absorber, shock absorber, shock absorber-spring combination, etc., can solve the problem of optimal damping matching of vehicle suspension, high test and design costs, and inability Satisfy issues such as vehicle ride comfort and safety

Inactive Publication Date: 2014-11-19
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] For many trucks, the leaf spring suspension system is mostly used. Although the leaf spring has a certain damping effect, it is difficult to achieve the best damping matching for the vehicle suspension by relying on the leaf spring alone, which cannot meet the requirements of vehicle ride comfort and safety. Require
With the rapid development of the vehicle industry and the continuous increase of vehicle speed, higher design requirements are put forward for the design of the leaf spring suspension system of trucks. Therefore, it is necessary to add hydraulic shock absorbers to the vehicle leaf spring suspension system. However,

Method used

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  • Method for designing optimal damping characteristics of shock absorber of vehicle steel plate spring suspension system
  • Method for designing optimal damping characteristics of shock absorber of vehicle steel plate spring suspension system
  • Method for designing optimal damping characteristics of shock absorber of vehicle steel plate spring suspension system

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Embodiment

[0044] Embodiment: A certain truck adopts a leaf spring suspension system, and the sprung mass m of the front axle single-wheel suspension 2 =35000kg, unsprung mass m 1=3500kg, suspension k 2 =3618700N / m, tire stiffness k t =32568300N / m, the maximum vibration velocity of the suspension leaf spring under normal working conditions V=0.5084m / s, the installation angle of the shock absorber α=10°, and the lever ratio i=0.9.

[0045] The design method of the optimal damping characteristic of the vehicle leaf spring suspension system shock absorber provided by the example of the present invention, its concrete steps are as follows:

[0046] (1) Determine the optimal damping ratio ξ required by the vehicle suspension system o :

[0047] According to the vehicle parameters, determine the optimal damping ratio ξ required by the vehicle leaf spring suspension system o ,Specific steps are as follows:

[0048] Step A: Determine the optimal damping ratio ξ of the vehicle suspension sy...

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Abstract

The invention relates to a method for designing optimal damping characteristics of a shock absorber of a vehicle steel plate spring suspension system, and belongs to the technical field of vehicle steel plate spring suspensions. The method is characterized by including the steps of conducting optimization design on the optimal damping ratio required by the suspension system according to parameters of the vehicle suspension system, calculating and analyzing the damping ratio of the steel plate spring suspension system according to displacement and loads measured through steel plate spring loading and unloading deformation tests, and designing the optimal damping characteristics of the shock absorber of the vehicle steel plate spring suspension system on this basis. It can be known from Matlab/simulink simulation verification that the optimal damping characteristic design value of the shock absorber of the steel plate spring suspension system can be designed according to the method, the optimal damping matching can be achieved for the vehicle steel plate spring suspension system, and vehicle driving smoothness is improved; meanwhile, repeated tests and verification can be avoided, the development speed of products can be increased, and design and test expenses can be reduced.

Description

technical field [0001] The invention relates to a vehicle leaf spring suspension system, in particular to a design method for optimum damping characteristics of a shock absorber of the vehicle leaf spring suspension system. Background technique [0002] For many trucks, leaf spring suspension systems are mostly used. Although the leaf spring has a certain damping effect, it is difficult to achieve the best damping matching for the vehicle suspension by relying on the leaf spring alone, which cannot meet the requirements of vehicle ride comfort and safety. Require. With the rapid development of the vehicle industry and the continuous increase of vehicle speed, higher design requirements are put forward for the design of the leaf spring suspension system of trucks. Therefore, it is necessary to add hydraulic shock absorbers to the vehicle leaf spring suspension system. However, at present, no reliable design method has been given for adding hydraulic shock absorbers to the le...

Claims

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Application Information

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IPC IPC(8): G06F17/50F16F13/00
Inventor 于曰伟周长城宋群潘礼军提艳
Owner SHANDONG UNIV OF TECH
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