Torsion Powered Vehicle

[--Pete]

Hi,

Just a quick post for now, more later. I've got some ideas that I want to check out, but my vision is too blurry right now.

I would think that fatigue would only be a factor in plastic deformation, not from operating within its modulus of elasticity.

Strictly speaking, fatigue is only a factor in the elastic regime. Once you get out of the elastic regime, you're talking permanent deformation leading to ductile fracture. Fatigue is caused by the migration and pinning of dislocations caused by elastic deformation which eventually leads to brittle fracture.

--Pete