Design method for the wall thickness of the inner circular sleeve of the rubber bushing of the outer offset cab stabilizer bar

Abstract

The invention relates to a design method for the wall thickness of an inner circular sleeve of a rubber bush of an externally biased cab stabilizer bar, and belongs to the technical field of vehicle cab suspension. According to the structure and material characteristic parameters of the stabilizer bar system, the present invention takes the wall thickness of the inner circular sleeve as a parameter, and passes through the relationship between the equivalent line stiffness of the torsion tube, the load coefficient of the rubber bushing and the equivalent combined line stiffness expression , established the mathematical model for the design of the wall thickness of the inner sleeve, and used the Matlab program to solve the design. Through example design and ANSYS simulation verification, it can be seen that this method can obtain accurate and reliable design value of the wall thickness of the inner sleeve, which provides a reliable technical basis for the design of the stabilizer bar system and the development of CAD software, and can be used without increasing the product cost. In this case, the performance of the stabilizer bar system in the cab can be improved, and the ride comfort and safety of the vehicle can be improved by only adjusting the wall thickness of the inner sleeve; at the same time, the design and test costs can also be reduced.

Description

technical field [0001] The invention relates to a vehicle cab suspension, in particular to a method for designing the wall thickness of an inner circular sleeve of a rubber bush of an outer offset cab stabilizing bar. Background technique [0002] The rubber bushing consists of an inner sleeve, a rubber sleeve and an outer sleeve. When the outer radius of the rubber sleeve is given, the inner radius and thickness of the rubber sleeve are related to the wall thickness of the inner sleeve. In the actual design of the cab stabilizer bar system, under the condition that the structure of the stabilizer bar remains unchanged, the adjustment design of the inner circle radius and thickness of the rubber sleeve can be achieved only through the adjustment design of the inner circle sleeve wall thickness, so as to realize the The adjustment design of the roll angle stiffness of the stabilizer bar system of the cab can meet the design requirements of the roll stiffness of the cab. How...

AI Technical Summary

Problems solved by technology

However, since the externally biased cab stabilizer bar system is a coupled body composed of rigid body, elastic body and flexible body, and the torsion tube also has bending and torsional coupling, its analysis and calculation are very complicated. Therefore, For the design of the wall thickness of the inner circular sleeve of the rubber bushing of the outer offset cab stabilizer bar, no reliable analytical design method has been given at home and abroad.

At present, for the cab stabilizer bar system at home and abroad, most of them 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 , because the ANSYS simulation analysis can only simulate and verify the characteristics of the stabilizer bar with given parameters, and cannot provide an accurate analytical design formula, it cannot realize the analytical design, let alone meet the requirements of CAD software development for the cab stabilizer bar system

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