Effect of Critical Speed on Multi Crack Condition in Different Shaft: A Review

The effective uses of a shaft are limited at its maximum operational junction frequency. The study was conducted by using the Finite element method. The shafts are used with flow of with rotation such as compresses, turbine and industrial applications. The major study was done on shaft by using different materials with different shaft profile of Solid and Hollow with two and Three Cracks. A natural frequency was analyzed and critical speed was predicted by using Campbell diagram and analysis was also performed for validation. In our analysis, ANSYS is used and the model is developed on CREO 5.0. In order to verify the present ANSYS model, the Natural frequency with their modes by using two types of materials are compared with the available experimental results present in the literature. And the design of shaft with solid and hollow with Two and three Cracks. In this study, the simulations of different profile shaft and two types of materials i.e. Gray cast iron, alloy 6061 and is analyzed for critical speed and natural frequency the configurations of shaft design are proposed. The results show that solid shaft and material like Gray cast iron of shaft decreases the critical speed with increase in a RPM simultaneously. The natural frequency of shaft is compared by using two types of materials and is predicted that at solid and hollow with two and three cracks of shaft profile a alloy 6061 gives better frequencies in different modes