Mechanical based simulation?

[MetalUrge]

I'm looking out for softwares which can create animation (simulation) based on mechanical parameters like speed, time, distance, angles, external dynamics, mechanics, material types, object measurements, etc.

I know of softwares used for 3d Mechanical modeling such as Pro/E, CATIA, Solid Edge, SolidWorks and Inventor, etc and I don't know how their simulation works.

So I am in need of something which specialises on mechanical simulation.

Thanks in advance.