Title Study of telescopic intermediate steering shaft joint performance /
Translation of Title Teleskopinio jungiamojo vairo veleno sujungimo parametrų tyrimas.
Authors Gopinathan, Arun
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Pages 79
Keywords [eng] wear ; intermediate steering shaft ; FEM ; spline teeth ; stress
Abstract [eng] The intermediate steering shaft used in the steering system is used widely based on providing better steering response by transmitting the motion from steering wheel to the steering gear. The steering wheel inside the driver compartment is connected with the one end of the shaft and the other end of the shaft is connected to the gear. Though various types of intermediate shaft available, telescopic splined shaft are widely preferred by the manufacturers for good torsional strength and axial loading condition. It has an outer and inner splined shaft in which the spline in this shaft acts as a tubular locking device. These splines connect the extension shaft to the steering gearbox. Nowadays the vehicle manufacturers using C-Eps steering are doing frequent recalling of the vehicle for repair and replacement of the steering shaft. The major defect that could happen with the splined shaft is the occurrence of deformation of the splines if the steering wheel is frequently and forcefully rotated while driving at low speed. This deformation is the result of excessive wear and inadequate torsional strength in the splines. It ultimately leads to the increase in backlash or clearance which causes the noise and faulty steering. In case of accidents, increased loading will cause bending of the shaft due to the lack of strength. The scope of this research paper is on finding the influence of applied torque on the contact stress developed and its impact on the wear resistance of the splined shaft. It deals with the design and analyses the telescopic splined intermediate steering shaft used in automotive by the finite element analysis method. The design has been made with measured dimensions of a commercially used vehicle intermediate shaft through SolidWorks. Chemical analysis was done to find the material and its properties that have used in the shaft commercially. From the analysis made through FEA method, it has been observed that the increase in torque has a greater influence on the increase in contact stress-strain properties which leads to wear.
Dissertation Institution Kauno technologijos universitetas.
Type Master thesis
Language English
Publication date 2017