When Materials are Pulled/Fixed

[FallenAngel]

Homework Statement

I want to know what happens to particles inside a material, when they are pulled or fixed. That's all I've been asked to do.

Homework Equations

There are none.

The Attempt at a Solution

I've been searching through google and ask.co.uk but everything I click on doesn't talk about particles. I've been asked to research through the internet and I feel this is the best place to come to.

 

[denverdoc]

well maybe some more specific inquiries along the lines of mettalurgy, particle board, other processes that use such methods.