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22.322 Mechanical Design IIPowerPoint Presentation

22.322 Mechanical Design II

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22.322 Mechanical Design II

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22.322 Mechanical Design II

Spring 2013

Problem 11.3a

Problem 11.12

- In the previous lecture, we discussed static and dynamic balancing of rotating parts
- Main difference between static and dynamic balancing??

- Specifically, we looked at a few examples of shafts with disks
- We were asked to balance the shaft by adding masses to one or more of the disks
- Let’s look at similar, but different examples…

- Let’s consider the unbalanced link shown below.
- We would like to balance the ink with a single mass, mb.
- In order to do this, we need to essentially make the center of mass of m1, m2, and mb be located at x=0, y=0.

Example

- Let’s consider the two-plane dynamic balancing problem