Could someone explain undulation per revolution?

In summary, Undulation per revolution refers to the deviation of a component's surface during one full rotation. This can be caused by mass imbalance, concentricity, or roundness issues. It is important to distinguish between these factors as they can result in varying degrees of undulation per revolution.
  • #1
Watts
38
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Could someone explain undulation per revolution? I would prefer to have a mathematical function defining it also if possible. Can any explain ONE also?

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  • #2
Are you referring to a 1 per rev imbalance in a rotating component?
 
  • #3
Perhaps one needs to distiguish between an undulation caused by - mass imbalance, or deviation in concentricity or roundness - any of which can result in the deviation (undulation) of a component's surface.

Mass imbalance implies a variation in momentum that would cause a part to vibrate during rotation. Similarly concentricity, in which the center (central axis) of a round part is not coincident with the rotating axis, e.g. the axis of a shaft. Now normally, this would like produced one undulation/rotation.

If a part's surface is out-of-round, it could have more than one deviation (from roundness) on the circumference and thus one would measure more than one undulation per full revolution.
 
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Related to Could someone explain undulation per revolution?

1. What is undulation per revolution?

Undulation per revolution refers to the amount of vertical movement or oscillation that occurs in an object as it completes one full rotation or revolution.

2. How is undulation per revolution measured?

Undulation per revolution can be measured in various units such as inches, millimeters, or degrees depending on the object and its movement. It can also be quantified using mathematical equations or through motion tracking technology.

3. What causes undulation per revolution?

Undulation per revolution can be caused by various factors such as the shape and weight distribution of an object, the surface it is moving on, and external forces such as gravity or friction. In some cases, it can also be intentionally induced for specific purposes, such as in wave pools.

4. How is undulation per revolution relevant in science?

Undulation per revolution is relevant in various fields of science, including physics, engineering, and biology. It plays a crucial role in understanding the movement and behavior of objects, as well as in designing and optimizing systems and structures.

5. Can undulation per revolution be controlled or minimized?

In some cases, undulation per revolution can be controlled or minimized through the use of specific techniques or technologies. For example, in mechanical systems, balancing weights or adjusting the shape of the rotating parts can reduce undulation. In other cases, such as in biological systems, it may be more challenging to control or minimize undulation due to the complex and dynamic nature of the movement.

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