• Support PF! Buy your school textbooks, materials and every day products Here!

Natural Oscillation Frequencies

  • #1

Homework Statement


Over the years, buildings have been able to be built out of lighter and lighter materials. how has this affected the natural oscillation frequencies of buildings and the problems of resonance due to passing trucks, airplanes, or by wind and other natural sources of vibration?

Homework Equations


None

The Attempt at a Solution


I don't think I fully understand the question. Upon reading I have found natural frequency equations and the concept of resonance as it applies to damping but I don't see how the mass of the materials effect these. My initial thought was that the natural frequencies were higher, making it less likely for passing frequencies to get close to the natural frequencies.
 

Answers and Replies

  • #2
34,074
9,986
Take a simple spring with an attached mass. How does the resonance frequency change if you make the mass lighter?
Buildings are a bit like very complex structures made out of springs and masses.
making it less likely for passing frequencies to get close to the natural frequencies.
Why less?
 

Related Threads on Natural Oscillation Frequencies

  • Last Post
Replies
5
Views
4K
Replies
0
Views
2K
  • Last Post
Replies
3
Views
949
  • Last Post
Replies
2
Views
541
  • Last Post
Replies
1
Views
13K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
2
Views
740
  • Last Post
Replies
1
Views
799
  • Last Post
Replies
2
Views
2K
Top