Inventor 2015 - Frame analysis - Solver failed to get results

[Anonymous]

Hello

Forgive me if this is from my own incompetence, but I get the mentioned error, when I try to simulate.

I have a tubeframe of a plane fuselage, which is not finished. Since I am pretty new to Inventor, I wanted to try out the things I need to do later.

So I assigned some tubing with the frame generator. Then I assigned some random forces and a few constraints.

When I try to simulate, it gives me this error.

Just to be sure, it is not the programs defect, I created a straight tube, with 2 constraits and gravity, and it worked perfectly.

Does anyone have any ideas on what the problem is?

Could it be that I havent assigned the mitres and notchings to the joints?

[JDMather]

Attach your assembly here - or at least an image.

[Anonymous]

Hi, I attached a new assembly file where, there is just a wireframe, since the other one didn't work anyway,

On that topic, the fuselage is meant to be made from AISI 4130 n steel, and from different measures. How can I add that material with its properties and measures needed?

If I could get these answers, I would be very happy.