I am creator of TIMO Structural Siarhei Arlou, Ass. Professor, PhD in applied mechanics.
The main goal of my professional life is to do best instruments for engineering structural analysis and Mechanics of Materials education.
If you do some homework try to use TIMO Structural - alive 3D interface software specially for goal detected above.
It would be very good to listen your opinion, for example:
this product is more then BAD;
or it is good work :).