Finite Element Method Based Evaluation of Bogie Bolster Design
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Abstract
The requirement of increased turn around time and higher pay-load carrying capacity, weight reduction of components and systems is having much attention in railway industry. The present paper discusses about the Finite Element Analysis (FEA) carried out using ANSYS workbench on the modified design of a bolster in light weight freight bogies. The reduction in weight transforms into higher performance leading to lower power consumption. With this present study, although the modified bolster has not undergone any significant weight reduction, but the modifications in design has lead to increase in stiffeness and reduction in stresses generated for various loading conditions. Presently, bolsters fitted with wagons in Indian Railways are in operational for 20.32t to 22.9t axle load capacities for a variety of applications. The existing and modified bolsters are analysed in static conditions for different loads which includes a vertical load on centre plate, transverse loading and side bearing loading and a comparison has been made. The results on the modified bolster has shown 11% higher bending stiffness in vertical direction at the centre and 9% higher stiffness in tranverse direction as compared to the existing bolster.
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