Abstract
Transmission system is the most important part of the vehicle assembly. Truck transmission casing was subjected to vibration induced by the vehicle running, varying speed, and torque conditions. It is required to find the natural frequency and mode shape for accurate prediction of transmission casing life and prevent it from damage. The main objective of this research work is to find the influence of transmission casing material on natural frequency and mode shape of free vibration. Casing is made of material like cast iron, Al alloys, Mg alloys, structural steel, and composites. In this paper, the free vibration analysis of transmission casing has been performed by finite element simulation using ANSYS 14.5 software. The vibration patterns for first twenty modes were studied for all types of materials. The mode shapes show that the natural frequency of all materials varies in the range of 1,000–3,800 Hz. The analysis results were compared with experimental result available in the literature.
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