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# 22.322 Mechanical Design II PowerPoint PPT Presentation

22.322 Mechanical Design II. Spring 2013. HW #4. Problem 11.3a. HW #4. Problem 11.12. Lecture 19. In the previous lecture, we discussed static and dynamic balancing of rotating parts Main difference between static and dynamic balancing??

22.322 Mechanical Design II

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## 22.322 Mechanical Design II

Spring 2013

Problem 11.3a

Problem 11.12

### Lecture 19

• 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…

### Lecture 19

• 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

### Lecture 19

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