Vehicle suspension roll angle rigidity checking method

A roll angle stiffness and vehicle suspension technology, which is applied in the field of vehicle suspension roll angle stiffness check, can solve problems such as inability to provide analytical calculation formulas, failure to give analytical calculation methods, failure to meet suspension stabilizer bars, etc.

Inactive Publication Date: 2014-12-03
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 the analytical calculation of the deformation of the stabilizer bar, the analytical calculation of the deformation of the rubber bush, and the key issues of mutual coupling, a reliable analytical calculation method has not been given for the check calculation of the vehicle roll angle stiffness.
At present, at home and abroad, most of the vehicle roll angle stiffness checks use ANSYS simulation software to simulate, analyze and verify the roll angle stiffness through solid modeling. Although this method can obtain relatively reliable simulation values, it cannot provide accurate Analytical calculation formula, therefore, cannot meet the requirements of CAD software development for suspension stabilizer bar system

Method used

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  • Vehicle suspension roll angle rigidity checking method
  • Vehicle suspension roll angle rigidity checking method
  • Vehicle suspension roll angle rigidity checking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] 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; the wheelbase of the front axle of the vehicle B f =1650mm, rear axle track B r =1485mm; the vehicle is only equipped with a stabilizer bar system in the front suspension, and its structural diagram is as follows image 3 shown, where the straight d of the stabilizer bar f =20mm, total length l cf =800mm, arm length, l 1f =150mm, transition arc radius R f =50mm, transition arc central ...

Embodiment 2

[0112] 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 front and rear suspension stabilizer bars and rubber bushings, except for the different diameters, other parameters are the same as those in Example 1, where the diameter of the front stabilizer bar is d f =22mm, rear stabilizer bar diameter d r =19mm; ...

Embodiment 3

[0141] Embodiment three: A certain vehicle except the diameter d of the front suspension stabilizer bar f and the inner circle radius r of the rubber bushing af and outer circle radius r bf In addition to being different, all other parameters are exactly the same as those of Embodiment 2, wherein, the diameter d of the front stabilizer bar f =21mm, the inner circle radius r of the rubber bushing af =12.5mm, and outer circle radius r bf = 22.5 mm. Check and calculate the roll angle stiffness of the vehicle suspension system.

[0142] Adopt the step of implementation example one, check and calculate the roll angle stiffness of this vehicle suspension system:

[0143] (1) The total roll angle stiffness required by the vehicle suspension The calculation of:

[0144] Because the vehicle parameters are exactly the same as those of the second embodiment, the total roll angle stiffness required by the vehicle suspension is also the same as that of the second embodiment, that i...

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Abstract

The invention relates to a vehicle suspension roll angle rigidity checking method and belongs to the technical field of vehicle suspensions. Previously, a roll angle rigidity analysis checking and calculating method is not given. With the method, the roll angle rigidity of a front suspension and a rear suspension and the total roll angle rigidity of a vehicle are checked and calculated according to vehicle and suspension parameters, structure and material characteristic parameters of a designed stabilizer bar and a designed rubber bushing, the deformation coefficient GW of the end of the stabilizer bar, and the analysis calculation formula of the radial rigidity Kx of the rubber bushing. An accurate and reliable vehicle roll angle rigidity checking and calculation value can be obtained with the method, the design level and the design quality of a vehicle suspension and stabilizer bar system and driving smoothness and driving safety of the vehicle can be improved; meanwhile, design and experiment cost can be reduced with the method, product development speed can be increased, and reliable technical support is provided for development of stabilizer bar CAD software.

Description

technical field [0001] The invention relates to a vehicle suspension, in particular to a method for checking the roll angle stiffness of the vehicle suspension. Background technique [0002] The design of the vehicle suspension and stabilizer bar must meet the design requirements for the stiffness of the roll angle when the vehicle is turning. However, due to the constraints of the analytical calculation of the deformation of the stabilizer bar, the analytical calculation of the deformation of the rubber bush, and the key issues of mutual coupling, a reliable analytical calculation method has not been given for the check calculation of the vehicle roll angle stiffness. At present, at home and abroad, most of the vehicle roll angle stiffness checks use ANSYS simulation software to simulate, analyze and verify the roll angle stiffness through solid modeling. Although this method can obtain relatively reliable simulation values, it cannot provide accurate The analytical calcul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 周长城郭剑提艳安艳高炳凯于曰伟
Owner SHANDONG UNIV OF TECH
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