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Dynamic axial stiffness of composite tubes

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nestorphi

Civil/Environmental
Sep 2, 2012
5
Hello All,

I am trying to analyse the dynamic (impact) behaviour of a composite tube under axial impact. Relative to this, I want to know the dynamic axial stiffness of the composite tube. I already got the max static and dynamic deflections (0.0007 and 1.687 mm, respectively) of the tube impacted by 20 kg at a drop height of 3m. I also got the static axial stiffness of the tube (445,000 N/mm). Is there a way in which I can get the dynamic axial stiffness from this information? or an available experimental test to get the dynamic stiffness?
Thank you very much and I appreciate your help.

Regards,
Nestor_phi
 
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