Design method of torsion tube external offset of externally offset non-coaxial cab stabilizer bar

A non-coaxial, design method technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problem of inability to provide analytical design formula, complex calculation of rubber bush stiffness, and inability to meet the requirements of cab stabilizer bar system development And other issues

Active Publication Date: 2018-04-27
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 external offset non-coaxial cab stabilizer bar system, it is a coupling body composed of rigid body, elastic body and flexible body, and the calculation of the stiffness of the rubber bush is very complicated. In addition, the external offset torsional The tube also has bending, torsion, and mutual coupling of loads. Therefore, a reliable analytical design method has not been given for the design of the external offset of the torsion tube for the externally offset non-coaxial cab stabilizer bar.
At present, most of the design of cab stabilizer bar system at home and abroad is to use ANSYS simulation software to simulate and verify the characteristics of the cab stabilizer bar system with a given structure through solid modeling, although this method can obtain relatively reliable simulation values However, since ANSYS simulation analysis can only verify the stabilizer bar with given parameters, it cannot provide an accurate analytical design formula, cannot realize the analytical design, and cannot meet the requirements of CAD software development for the cab stabilizer bar system

Method used

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  • Design method of torsion tube external offset of externally offset non-coaxial cab stabilizer bar
  • Design method of torsion tube external offset of externally offset non-coaxial cab stabilizer bar
  • Design method of torsion tube external offset of externally offset non-coaxial cab stabilizer bar

Examples

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Effect test

Embodiment 1

[0061] Example 1: The structure of an externally biased non-coaxial cab stabilizer bar system is symmetrical, such as figure 2 Shown, including: swing arm 1, suspension rubber bushing 2, torsion rubber bushing 3, torsion tube 4; among them, the torsion tube 4 and the torsion rubber bushing 3 have different axes, and the external offset of the torsion tube 4 is T It is the parameter to be designed; the distance L between the left and right swing arms 1 c = 1550mm, the suspension distance of the stabilizer bar; the distance between the suspension rubber bushing 2 and the torsion rubber bushing 3, that is the swing arm length l 1 =380mm; the distance from the suspension installation position C of the swing arm to the outermost end A Δl 1 =47.5mm; length L of twisted tube 4 w =1500mm, inner diameter d=35mm, outer diameter D=50mm, elastic modulus E=200GPa, Poisson's ratio μ=0.3; the structure and material properties of the left and right four rubber bushes 2 and 3 are exactly the same...

Embodiment 2

[0109] The second embodiment: the structure of an externally biased non-coaxial cab stabilizer system is the same as that of the first embodiment, such as figure 2 As shown, the torsion tube 4 and the torsion rubber bushing 3 have different axes, and the external offset T is the parameter to be designed; the distance L between the left and right swing arms 1 c =1400mm, that is, the suspension distance of the stabilizer bar; the distance between the suspension rubber bushing 2 and the torsion rubber bushing 3 is the swing arm length l 1 =350mm, the distance from the suspension installation position C of the swing arm to the outermost end A Δl 1 =52.5mm; length L of twisted tube 4 w =1000mm, inner diameter d=42mm, outer diameter D=50mm; the structures of the left and right rubber bushes are all the same, such as image 3 As shown, the inner diameter d of the inner sleeve 5 x = 35mm, wall thickness δ = 5mm; the length of the rubber sleeve 6 L x =40mm, inner circle radius r a =22.5mm,...

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Abstract

The invention relates to a design method for the external offset of a torsion tube of an external offset non-coaxial cab stabilizer bar, and belongs to the technical field of cab suspension. According to the structure and material characteristic parameters of the outer offset non-coaxial cab stabilizer bar and the rubber bushing, the present invention takes the outer offset of the torsion tube as a parameter, through the roll line stiffness of the stabilizer bar system, and the rubber bushing etc. Based on the relationship between the effective combined line stiffness and the equivalent line stiffness of the torsion tube, the mathematical model for the design of the torsion tube's external offset is established, and the Matlab program is used to solve the design. Through design examples and ANSYS simulation verification, it can be seen that the method can obtain accurate and reliable design value of torsion tube external offset. By using this method, the design level of the stabilizer bar system can be improved only through the design of the external offset of the torsion tube without increasing the product cost, and the design requirements of the roll angle stiffness of the stabilizer bar system can be met, and the ride comfort and performance of the vehicle can be improved. Safety; at the same time, design and test costs can also be reduced.

Description

Technical field [0001] The invention relates to a vehicle cab suspension, in particular a design method for the external offset of the torsion tube of an externally offset non-coaxial cab stabilizer bar. Background technique [0002] The axis of the torsion tube of the externally biased non-coaxial cab stabilizer bar system is different from the axis of the torsion rubber bushing, wherein the torsion tube has an outward offset relative to the torsion rubber bushing. When the stabilizer bar is working, the externally biased torsion tube is not only subjected to torsion deformation, but also to bend deformation. Therefore, the external bias of the torsion tube of the externally biased non-coaxial cab stabilizer bar system has a significant effect on the roll angle stiffness Significant influence. In the actual design of the stabilizer bar system, the external offset of the torsion tube can be designed while keeping other structural parameters unchanged, so that the roll angle stif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周长城周超
Owner SHANDONG UNIV OF TECH
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