Abstract
From past few years, there has been a rising trend of using composite materials for suspension system of vehicles as it reduces overall weight to a great extent. Also, they are unaffected by chemicals and corrosion. Watt’s linkage is an assembly of a bell crank and two horizontal rods of equal length. It is a mechanical linkage in which the bell crank is pivoted to axle at its centre traces vertical line, allowing axle to move vertically. The assembly is connected to the chassis of the vehicle with help of the horizontal rods, which constraints the lateral movement of body of vehicle and locates the axle under the vehicle. Low alloy steels are commonly used material for manufacturing the linkages in suspension system. In this paper, the Watt’s linkage components are designed and assembled in PTC Creo 3.0 and the finite element analysis of Watt’s linkage for two materials, namely, AISI 4142 steel and Carbon Fibre Reinforced Polymer (CFRP) is carried out. The results for total deformation and equivalent stress are produced using ANSYS Workbench 2019 R2 for dynamic loading. The maximum total deformation for 4142 steel is 0.31891 mm and for CFRP is 2.6298 mm.
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