at423
Mechanical
- Sep 2, 2017
- 1
I am trying to calculate the factor of safety for a rotor shaft on a diaphragm pump. The rotor has an eccentric mounted on it that is pressed into a bearing and piston rod assembly.
I have the speed that the motor is turning, and the speed torque curve for the motor- from this information the speed corresponds to a torque of 3 oz-in.
The eccentric loading is throwing me off- would I use the offset (0.018) as the distance for the torque and analyze the shaft with just a tranverse force applied to it (F=3 oz*in/ 0.018 in = 166 oz)?
Or do I just use the torque as if it was not an eccentric loading and find the stress using t=TC/J?
I have the speed that the motor is turning, and the speed torque curve for the motor- from this information the speed corresponds to a torque of 3 oz-in.
The eccentric loading is throwing me off- would I use the offset (0.018) as the distance for the torque and analyze the shaft with just a tranverse force applied to it (F=3 oz*in/ 0.018 in = 166 oz)?
Or do I just use the torque as if it was not an eccentric loading and find the stress using t=TC/J?
