Solids lab3.pdf - Rahul Sai Nagireddi 101130008 Experiment...

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Rahul Sai Nagireddi 101130008 Experiment C Torsion of a Hollow Circular Shaft Class Section : C Lab Section : L2 (Wednesday) Group Number : G5 Date : 4thMarch, 2020
Purpose :-The main goal of this lab is to apply torque to a hollow circular shaft and to establish the content of the shaft’s torsional stiffness and shear modulus. The secondary objective was to determine whether simple formula for torsion in circular shafts is valid for shear stresses. Procedure :- The procedure and steps followed in this experiment are from the lab manual of the course MAAE 2202 ( Mechanics of solids ). Apparatus :-Strain Gauge on the hollow shaft Hollow Circular Shaft Dial Gauge Position where load is applied Load Hanger Torque Arm
Results and Calculations :- Firstly, for each load applied to the shaft the torque and the twist angle were determined. Those values were determined for three experiments for which the loads were applied to the torque arm at different positions. The sample measurements are shown below for torque and twist angle. The torque was measured using the equation : ࠵? = ࠵? × ࠵? × ࠵?…..(1) If a load of 4.951kg was applied on the circular shaft at a distance of 0.14 m on the deflective arm, then the torque is T = 4.591 x 9.81 x 0.14 = 6.3053 Nm The torque the shaft feels is considered to be 6.03053 Nm The angle of twist was measured using : ࠵? = tan,-(/0123456 708604239:7)……(2) If the deflection arm of length 0.25 m deflected 0.0000913, then the angle of twist is ࠵? = tan,-(/0123456 708604239:7)=tan,-(<.<<<<>-?

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