Design method of stiffness matching and diameter of vehicle suspension stabilizer bar

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

Inactive Publication Date: 2018-08-07
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 of stiffness matching and diameter of vehicle suspension stabilizer bar
  • Design method of stiffness matching and diameter of vehicle suspension stabilizer bar
  • Design method of stiffness matching and diameter of vehicle suspension stabilizer bar

Examples

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Embodiment 1

[0096] 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 sr =261N / mm, the distance T between the center of the spring and the hinge point of the swing arm2r =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 c is 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 m...

Embodiment 2

[0154] 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.

[0155] 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 a lateral stabilizer bar of a vehicle suspension, and belongs to the technical field of vehicle suspension. Due to the constraints of the analytical calculation of the radial deformation of the stabilizer bar and the rubber bushing and the mutual coupling problem, a reliable optimal design method for the diameter of the stabilizer bar has not been given. The invention is characterized in that: firstly, according to the vehicle parameters and the roll model, the roll angle stiffness of the front and rear suspension stabilizer bar systems is matched and designed; then, according to the roll angle stiffness matching design value, the radial stiffness coefficient Kx of the rubber bushing is And the deformation coefficient expression Gw of the end of the stabilizer bar, the mathematical model of the optimal design of the stabilizer bar diameter d is established, and the accurate and reliable optimal design value of the stabilizer bar diameter d is obtained by using the Matlab program. The invention can improve the design level and performance of the suspension and the stabilizer bar, and improve the running comfort and safety of the vehicle; at the same time, it can also speed up the product development and design speed, and reduce the design and test costs.

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, due to the roll angle stiffness of the stabilizer bar system, it is not only affected by the vehicle parameters and the structure and material property parameters of the stabilizer bar, but also by the structure and material property pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50B60G21/055
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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