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

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...

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

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