The trio belong to the VélUS bicycle research team, and I had introduced them to you a couple of months back through a post on estimating bicycle fatigue. (See HotSpot Method For Bicycle Fatigue Life).
Presented below is a paper they did on structural dynamics and it had appeared in the Sound and Vibration Control Magazine. The components and the frame of a bicycle are subjected to time-varying force excitations imposed by the cyclist and by the road. Its dynamic behavior becomes an important issue, because it is directly linked to the bike lifetime, maneuverability, efficiency and comfort. The researchers describe the bicycle structure in terms of its natural characteristics which are the frequency, damping and mode shapes - its dynamic properties.
Preliminary Resources You May Find Helpful :
Size, Rattle and Modal Analysis - An article in the Machine Design magazine
Experimental Modal Analysis : A simple non-mathematical introduction
Modal analysis explained in simple terms
Basic steps involved in experimental modal analysis
Modal analysis - Mathematical introduction
Additional (Engineering 101) :
Vibration and Waves
Machine Vibration Basics
Introduction To Statics And Dynamics (An Excellent Online Book From Cornell University)
Damping Ratio
Transfer Functions
Strain Gages : Back to Basics
How Accelerometers Work
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Page 7Additional Resources For Reading :
1. Bike Think : Frame Flex And Strain Energy
2. AluMatter : Bicycle Frame Design Requirements
2 comments:
Iread the conclusion and it had more to do with engendering a relationship between Universities and Industry. Can you abstract for us what was learned about bicycles?
Hi
FEA modal analysis was used in designing the AIS/RMIT Australian track bike (superbike)
Article can be found here http://www.powerhousemuseum.com/hsc/bike/article.htm
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