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Design method for the thickness of the inner circular sleeve of the rubber bushing of the suspension stabilizer bar

A technology of rubber bushing and design method, applied in the direction of suspension, calculation, interconnection system, etc., can solve the problems of unable to meet the stabilizer bar system, no analytical calculation formula, failure to give, etc., to improve economic benefits and improve Design level, the effect of reducing design and test costs

Inactive Publication Date: 2017-12-05
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of key issues such as the radial deformation of the rubber bushing and the vertical displacement deformation at the end of the stabilizer bar and the mutual coupling effects, when the structure and material property parameters of the stabilizer bar are given and the outer circle radius of the rubber bushing, In the case of axial length and installation position, the design of the thickness of the inner sleeve of the rubber bushing of the stabilizer bar has not been given a reliable analytical design method at home and abroad.
At present, domestic and foreign scholars mostly use simulation analysis software to conduct numerical simulation analysis on the deformation and stiffness of the stabilizer bar system under the given structure and load conditions. The deformation and stiffness of the system are simulated and verified, and there is no analytical calculation formula, which cannot meet the requirements of the analytical design of the stabilizer bar system and the modern CAD design

Method used

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  • Design method for the thickness of the inner circular sleeve of the rubber bushing of the suspension stabilizer bar
  • Design method for the thickness of the inner circular sleeve of the rubber bushing of the suspension stabilizer bar
  • Design method for the thickness of the inner circular sleeve of the rubber bushing of the suspension stabilizer bar

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Embodiment one: the track B=1600mm of certain vehicle front axle, the structure of adopting stabilizer bar, as figure 2 As shown, among them, l c is the total length of the stabilizer bar, l c =800mm; l 1 is the arm length, l 1 =150mm; l 0 is the installation distance between rubber bushings, l 0 =400mm; R is the radius of the transition arc, R=50mm; θ is the central angle of the transition arc, θ=60°; the modulus of elasticity of the stabilizer bar material E=210GPa, Poisson's ratio μ=0.3. The structure of the rubber bushing is as follows image 3As shown, among them, the stabilizer rod 1, the inner circular sleeve 2, the rubber bush 3, the outer circular sleeve 4, the diameter d of the stabilizer rod 1 = 20mm, and the elastic modulus E of the rubber bush 3 x =7.84MPa, Poisson's ratio μ x =0.47, axial length L=25mm, outer circle radius r b =30mm, inner circle radius r a =(10+δ)mm, where δ is the parameter variable of the wall thickness δ of the rubber bush in...

Embodiment 2

[0073] Embodiment 2: The structural parameters of the front suspension of a certain vehicle, the structural parameters of the stabilizer bar, the inner circle radius of the suspension bushing and the material characteristic parameters are all identical to those of Embodiment 1, except that the front suspension stabilizer bar system requires The design requirements for roll angle stiffness are different, that is, Under the design requirements of the roll angle stiffness, the thickness δ of the inner sleeve of the rubber bushing is designed.

[0074] Using the design steps of Embodiment 1, the thickness δ of the inner circular sleeve of the rubber bushing of the front suspension stabilizer bar of the vehicle is designed. Because the structural parameters of the front suspension of the vehicle, the structural parameters of the stabilizer bar, the outer circle radius of the rubber bushing and the material characteristic parameters are all identical to those of Embodiment 1, only ...

Embodiment 3

[0076] Embodiment three: the wheelbase B=1600mm of the front axle of a certain vehicle, the structure and material of the stabilizer bar adopted are exactly the same as that of embodiment one, the diameter d of the stabilizer bar=21mm; the installation distance l between the two rubber bushes 0 =400mm, the outer circle radius r of the rubber bushing b =30.5mm, axial length L=25mm; elastic modulus E of rubber bushing x =7.84MPa, Poisson's ratio μ x = 0.47. The design requirement value of the roll angle stiffness of the front suspension stabilizer bar system of the vehicle Under the given installation position of the stabilizer bar and the rubber bushing, the thickness δ of the inner circle sleeve of the rubber bushing is designed.

[0077] Adopt the design procedure of embodiment one, design the inner circle sleeve thickness δ of the rubber bushing of the front suspension stabilizer bar of this car: (1) calculate the vertical displacement deformation coefficient G of the en...

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Abstract

The invention relates to a design method for the thickness of an inner circular sleeve of a rubber bush of a suspension stabilizer bar, and belongs to the technical field of vehicle suspension. Previously, no reliable analytical design method has been provided at home and abroad. The present invention is characterized in that: taking the thickness of the inner circular sleeve as the parameter to be designed, according to the required value of the roll angle stiffness design of the stabilizer bar system, the wheel base of the vehicle, the structure and material characteristic parameters of the stabilizer bar and the rubber bushing, the rubber bushing is established The mathematical model for the optimal design of the thickness of the inner sleeve of the sleeve can be obtained by using the Matlab program to optimize the design value of the thickness of the inner sleeve. Using this method, the accurate and reliable optimal design value of the thickness of the inner sleeve can be obtained, and the design level of the stabilizer bar can be improved, that is, the stabilizer bar system can achieve the roll angle stiffness only by optimizing the thickness of the inner sleeve. At the same time, using this method can reduce design and test costs and improve vehicle ride comfort and handling safety.

Description

technical field [0001] The invention relates to a vehicle suspension stabilizer bar, in particular to a method for designing the thickness of an inner circular sleeve of a rubber bush of the suspension stabilizer bar. Background technique [0002] The roll angle stiffness of the suspension system is not only affected by the structure and diameter of the stabilizer bar, but also by the length of the rubber bushing, the radius of the inner circle, the radius of the outer circle, material properties and installation displacement. Among them, the rubber bushing The inner radius of the sleeve is determined by the diameter of the stabilizer bar and the thickness of the inner sleeve of the rubber bushing. However, due to the constraints of key issues such as the radial deformation of the rubber bushing and the vertical displacement deformation at the end of the stabilizer bar and the mutual coupling effects, when the structure and material property parameters of the stabilizer bar ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60G21/055G06F19/00
Inventor 周长城宋群于曰伟张云山潘礼军曹海琳
Owner SHANDONG UNIV OF TECH