Design Evaluation Methodology of Truck Steering Component & Linkages

Paper #:
  • 2017-01-1478

Published:
  • 2017-03-28
Abstract:
In automobile, steering system's main function is to allow driver to guide vehicle on desired course. Steering system consists of various components & linkages. Using these linkages, the torque from steering wheel got transferred to Tyre which results in turning of vehicle. The steering components are subjected to various loading conditions over the life of vehicle. As steering components are safety critical elements in vehicle therefore it should not failure in any load condition because failure of any of these component causes vehicle failure. In commercial vehicle segment, vehicle failure means delay in freight delivery & results in huge loss to costumer. Therefore, while designing steering components one should consider all the possible loading which is not possible through theoretical calculation. Therefore, Physical tests has to be done to validate design of steering system which is very costly & time consuming process. Therefore, in our organization we are using Finite Element technology to validate design of different components virtually. In this process strength of steering component & linkages is evaluated for various loading conditions as extracted from actual road load data from physical testing. Also, steering components are tested for wheel jamming & wheel lock condition. For Steering linkages those comes under compressive loading, buckling analysis is carried out & correlated it with physical test. MSC Nastran software tool has been used for Analysis. Further, Fatigue analysis has been performed to evaluate steering components fatigue life under standard operating load condition using FEMFAT software tools. Therefore, we have covered all possible loading condition which can result in failure of steering component except accidental cases. Using finite element technique, the time taken in designing different steering component has reduced. Hence, using virtual method time & cost involved in physical test has reduced.
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