Static Structural Analysis of a Flywheel-Shaft Assembly using Shrink Fitting for Static & Dynamic Conditions

In this study I have analysed the behaviour of rotating Shaft/ Heavy Disk, due to centrifugal force & contact pressure due to shrink fit via Finite element method and analytical analysis. I also found in my study there is risk and challenge mitigation is always there because to mount flywheel over a shaft we require need to heat flywheel to achieve the required shrink for mounting the flywheel on the shaft higher temperature is required which leads to temperature gradient and control method of doing this activity but at the same time higher deformation which then tends to nonuniformity in the flywheel inside diameter so required uniform contact between shaft and flywheel is difficult to achieve, higher shrink also increase the tangential stresses in the flywheel which leads to failure of the flywheel and vice versa also higher runaway or maximum speed of rotor leads to a gap between shaft and flywheel. To achieve all this required parameter, I have done so many permutations and combinations then I have concluded with a solution using the finite element method which is further validated by hand calculation. I have solely focused in centrifugal stresses and total radial deformation on all type of heavy disc/flywheel whose results are validated by analytical calculation and finite element method results. I have also studied the critical speeds, as we know a rotor spinning /rotating generates a gyroscopic couple, which is an end product of polar mass moment of inertia and the angular velocity which is resulting the couple in the direction following the right-hand cork screw rule. Inertia and gyroscopic torques or couple makes the bending moment jump along the heavy disc or flywheel.