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Design method for stiffness matching and diameter of vehicle suspension stabilizer bars

A technology of stabilizer bar and vehicle suspension, applied in the direction of suspension, vehicle parts, calculation, etc., can solve the problems that cannot satisfy the analytical design of suspension stabilizer bar, cannot provide analytical calculation formulas, etc.

Inactive Publication Date: 2014-12-10
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of key problems such as the deformation of the end of the stabilizer bar and the radial deformation of the rubber bush and the mutual coupling, there is no reliable analytical design method for the stiffness matching and diameter design of the suspension stabilizer bar at home and abroad. Most of them use ANSYS simulation software to build models, and analyze the deformation and stiffness of the stabilizer bar system through simulation. Although relatively reliable analysis values ​​can be obtained, this method can only be used for the stability of the stabilizer bar system under a given structure and load. The deformation and stiffness are verified, and the analytical calculation formula cannot be provided. Therefore, it cannot meet the requirements of the analytical design of the suspension stabilizer bar and the development of CAD software.

Method used

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  • Design method for stiffness matching and diameter of vehicle suspension stabilizer bars
  • Design method for stiffness matching and diameter of vehicle suspension stabilizer bars
  • Design method for stiffness matching and diameter of vehicle suspension stabilizer bars

Examples

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Embodiment 1

[0093] Embodiment one: the body mass m of a certain vehicle s =4690kg, lateral acceleration a y =0.4g, the distance h between the body center of mass and the roll axis s =1069mm, the design requirement value of body roll angle Front suspension swing arm length T 1f =675mm, spring wire stiffness k sf =102.45N / mm, the distance T between the center of the spring and the hinge point of the swing arm 2f =430mm; rear suspension swing arm length T 1r =650mm, spring wire stiffness K rs =261N / mm, the distance T between the center of the spring and the hinge point of the swing arm 2r =400mm; Front track B f =1650mm, rear track B r =1485mm; The structural diagram of the stabilizer bar used in the front and rear suspension of the vehicle is as follows image 3 As shown, among them, l cis the total length of the stabilizer bar, l c = l cf = l cr =800mm; l 1 is the arm length, l 1 = l 1f = l 1r =150mm; l 0 is the installation distance between the two rubber bushes in the ...

Embodiment 2

[0149] Embodiment 2: Known certain vehicle body mass m s =5000kg, lateral acceleration a y =0.4g, the distance h between the body center of mass and the roll axis s = 1150mm, body roll angle Spring wire stiffness k of the vehicle's front suspension sf =90.761N / mm, spring line stiffness k of rear suspension sr =176.23N / mm; front track B f =1650mm, rear track B r =1600mm; front suspension arm length T 1f =660mm, the distance T between the center of the front suspension spring and the hinge point of the swing arm on the same side 2f =450mm; rear swing arm length T 1r =650mm, the distance T between the installation center of the rear suspension spring and the hinge point of the cross arm on the same side 2r = 400mm. The structure and material properties of the stabilizer bar and the rubber bushing are the same as those in the first embodiment. Design the diameter of the front and rear suspension stabilizer bars.

[0150] Using the steps of Example 1, the diameter d of ...

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Abstract

The invention relates to a design method for stiffness matching and diameter of vehicle suspension stabilizer bars and belongs to the technical field of vehicle suspensions, aiming to fill a gap of the reliable optimal design method for diameter of the stabilizer bars due to limitation of radial deformation analytic analysis and inter-coupling of the stabilizer bars and rubber bushings. The design method is characterized by including the steps of firstly, performing matching design on stiffness of angle of roll of a front suspension stabilizer bar system and a rear suspension stabilizer bar system according to vehicle parameters and roll models; secondly, building an optimal design mathematical model of the stabilizer bar diameter d according to the matching design value of stiffness of the angle of roll, the radial stiffness coefficient Kx of the rubber bushings and the deformation coefficient expression Gw of ends of the stabilizer bars so as to obtain the accurate and reliable optimal design value of the stabilizer bar diameter d by means of a Matlab program. By the design method, design level and performance of the suspensions and the stabilizer bars can be improved, riding comfort and safety of vehicles can be improved, and meanwhile, design speed for product development can be increased and cost for design and test can be reduced.

Description

technical field [0001] The invention relates to a vehicle suspension, in particular to a design method for the stiffness matching and diameter of a lateral stabilizer bar of the vehicle suspension. Background technique [0002] The stabilizer bar system is one of the important components of the vehicle suspension system, which prevents excessive roll and roll angle vibration of the vehicle body when the vehicle is turning. Adding a stabilizer bar system with a matching roll stiffness to the vehicle suspension system can reduce this lateral roll. If the roll angle stiffness of the front and rear suspensions is not matched and the diameter is not properly designed, it will affect the steering characteristics of the vehicle. . At the same time, the roll angle stiffness of the stabilizer bar system is not only affected by vehicle parameters and stabilizer bar structure and material characteristic parameters, but also by the structure and material characteristic parameters of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F19/00B60G21/055
Inventor 周长城提艳张云山宋群潘礼军程正午
Owner SHANDONG UNIV OF TECH
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