Strength Calculation and Durability Assessment of the Cardan Shaft Assembly in the Transmission System of Light Trucks
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Abstract
This paper focuses on the computational analysis and durability assessment of the drive shaft assembly in the power transmission system of a light-duty truck. A realistic 3D model is employed to determine critical geometric parameters, including the Shaft Length (L) and Shaft Wall Thickness (b), which significantly influence the durability. Six specific cases are analysed with the following parameters: (1) L1=1450 mm, b1=6 mm; (2) L1=1450 mm, b2=4 mm; (3) L2=1300 mm, b1=6 mm; (4) L2=1300 mm, b2=4 mm, (5) L3=1150 mm, b1=6 mm and (6) L3=1150 mm, b2 = 4 mm. Finite Element Method (FEM) is applied, in combination with Ansys Workbench software, to simulate and evaluate the strength and natural vibration modes, including bending and torsional vibrations of the shaft assembly. The results reveal that the durability of the drive shaft is strongly dependent on both length and wall thickness. These parameters significantly affect stress and deformation, providing a scientific basis for design optimisation. Simulation outcomes indicate that adjusting shaft length and wall thickness can effectively reduce the stress and deformation, enhance durability and simultaneously optimise the material usage and production costs.
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