Kinetics, gravity and ground floor simulation

[cl3m.germain]

Hello everyone,

I am currently designing a 2-legged robot, and i am working with joints and motion study to simulate the walk. I created all the joints for the movements of the robot, and a ground floor that is "grounded" in the assembly (big square flat body) with contacts sets to the feet and the floor.

So the joints and contact sets works well but regardless of gravity and the upward thrust of the floor. The robots ends up floating on top of the floor when its feet have to push on it to lift up, and the legs never go back down.

I've seen we can set gravity vector in the Simulation menu, but then we can not work with joints anymore, they are active only in the Model menu ? Is there any tricks to simulate gravity ?

Otherwise i'm searching for a plug-in or kinetics simulator that can work with Fusion 360, can you advise me something ?

Thank you, Cheers

Clémence

[cl3m.germain]

I'm also searching for a tutorial about the loads and constraints sets in the simulation mode. I need some help to figure out how to use this tool, and i can't find any about how to set the contact sets and loads vectors ! Thank you !

[kgrunawalt · Accepted solution]

There are no real physics yet to assembly joints and motion, unfortunately. The simulation environment is focused on static analysis and not motion dynamics. This would be useful, we realize.

The current joint solving is purely algebraic. There is no time-based force calculation that could include gravity.

Sorry for the current dead-end, it sounds like a cool model!

[joelbecker0]

Is there still no kinetics in simulations or animations? I'd like to check the mechanical function of my machine with loose parts...

[TheCADWhisperer]

Autodesk Inventor Professional - Dynamic Simulation Environment.