cross posting to sci.engr.mech
Hi
>
> If i snap a wire of diameter 1 mm and length of 1 m with a force of 600N. >
> How do i calculate the fracture energy, or am i barking up the wrong
> tree with a misunderstanding of the term fracture energy?
>
> Dan
My first guess would be to integrate force over displacement as you stretch the wire. This would give you strain energy. As to fracture energy, perhaps some of the folks in these two groups can offer suggestions..
David A. Smith
and sci.engr.analaysis
If the the wire is totally free of flaws, the energy required to break would the total strain energy. In this case the wire has a uniform stress through the cross section and along its length. So the strain energy is area under the stress-strain curve times the volume.
Fracture as in fracture mechanics is really not applicable for static loading as in this wire problem.
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