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Ballena Joseph
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For the critical speed of the shaft, should I include the weight of the members mounted on the shaft (gears, pulleys, etc.) with the forces acting on it?
Ballena Joseph said:For the critical speed of the shaft, should I include the weight of the members mounted on the shaft (gears, pulleys, etc.) with the forces acting on it?
Critical speed of the shaft with given deflection and weight. From the formula: nc = (30/π)(ΣWy/ΣWy2)½anorlunda said:I wish you would be more explicit in your questions and give the context of what you are asking about.
Do you mean the critical speed as in resonances? Ihttps://en.wikipedia.org/wiki/Critical_speed
If so, then yes. Everything mounted on the shaft changes the natural frequency.
The critical speed of a shaft is the rotational speed at which the shaft experiences resonance, causing it to vibrate and potentially fail.
The critical speed of a shaft is important because it helps determine the safe operating speed of a rotating system. If the shaft operates above its critical speed, it can lead to mechanical failure and potential safety hazards.
The critical speed of a shaft is calculated using the formula: N = (C x g) / √(L x D), where N is the critical speed in revolutions per minute (rpm), C is a constant based on the shaft material, g is the acceleration due to gravity, L is the length of the shaft, and D is the shaft diameter.
The critical speed of a shaft can be affected by various factors such as the material and geometry of the shaft, the supports and bearings, and the speed at which the shaft is rotating.
The critical speed of a shaft can be controlled by adjusting the material and geometry of the shaft, using proper supports and bearings, and limiting the speed at which the shaft is rotating to stay below the critical speed.