ABSTRACT

Thomas Young (in 1807) described Hooke’s relationship in a way that did not rely on the geometry of a particular specimen.

A

kl E

l

x

A

kl A

kx

A

F

kxF

 

Let

E is a material property that describes the elasticity or stiffness of a material and is

l

x E

A

F 

When forces tend to pull on a body

Tensile stress

and thus stretch or elongate it, tensile stresses are produced within the material.