Frame stiffness

Flex, elasticity, minimum loss of stored energy, controlling the axes of distortion and return to equilibrium.

Pole vaulters now using composite poles take a one-dimensional object (pole) distort it into two dimensions and slightly off to the side (third dimension) storing their horizontal kinetic energy and translate it to the vertical. There lies a simple beginning point to study the storage and return of energy in a slightly flexible frame.

https://janheine.wordpress.com/2017/06/06/expert-discussion-on-frame-stiffness/

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