MATLAB with Simulink
Before using simulation to predict how your prototype might behave under certain conditions, have you thought of a simpler way to test it? As engineers, we are trained to solve complicated problems using complex tools, but sometimes there are simpler ways to proceed. If you need Finite Element Analysis then Abaqus might interest you.
Matlab - simulink is simulation/analysis software.
!!! WARNING : This licence software are reserved for members of interdisciplinary projects !!!