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Damping Ratio of SMAs

by scriptymender
Tags: damping, ratio, smas
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scriptymender
#1
May6-14, 09:37 AM
P: 4
G'day guys,

I am currently trying to calculate the damping ratio for Shape memory alloys using hysteresis loops. The damping ratio is usually represented as ΔU/2∏ĆU, where ΔU is the energy lost due to material damping and U is the elastic strain energy. My problem is trying to find this elastic strain energy due to the unusual behaviour of shape memory alloys. I have attached an example of a hysteresis loop for an SMA undergoing the super elastic effect. If anyone could give me any help or guidance I would be extremely grateful and may even buy you a beer!

Thanks, Leon
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Greg Bernhardt
#2
May13-14, 01:49 PM
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I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?


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