22.322 Mechanical Design II

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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??

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### 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??
• 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.
Lecture 19

Example

Lecture 19
• Let’s consider the two-plane dynamic balancing problem