Create Factory

RWD_PWR_BMW_5

Hello,

I am trying to simulate this hopper spreading mechanism by making it move across the platform. I will dispense particles as it moves. As you can see, the hopper is equipped with an auger, which will continuously rotate to allow the particles on top to pass through. I had no issues with making the hopper mover across the platform at a certain speed. However, I am facing issues with making the auger continuously rotate while moving across with the hopper. The auger tends to not move with the hopper and it also travels upwards while rotating for some reason. I have attached pictures of the motions I have applied.

Thank you for your time and consideration!!!

Stephen Cole

Hi,

 

For the auger geometry you need to also specify the traverse motion.  You can do this by either right clicking on the existing translation kinematic and choosing to copy to the auger.  Or you could set the auger to have "parent" = hopper where it will pickup the motion.  To set parent-child you can select the Auger under Geometries and there should be an option to se the parent in the box below.

Once this is set you need a Linear Rotation kinematic, not Conveyor rotation for the Auger.  Conveyor rotation keeps the geometry stationary but adds a relative motion to any contacts to represent a rotating geometry.  The Linear rotation kinematic should be similar in setup to what you have with the Conveyor motion, just ensure the Start Point is the centre of mass of the conveyor at t=0, that the axis of rotation is correct and that "moves with body" is selected.  Moves with body will ensure that when the auger is translating the rotation vector also translates so it's always rotating around the auger CoM.

Regards

Stephen

RWD_PWR_BMW_5

Stephen Cole_21117 said:

Hi,

 

For the auger geometry you need to also specify the traverse motion.  You can do this by either right clicking on the existing translation kinematic and choosing to copy to the auger.  Or you could set the auger to have "parent" = hopper where it will pickup the motion.  To set parent-child you can select the Auger under Geometries and there should be an option to se the parent in the box below.

Once this is set you need a Linear Rotation kinematic, not Conveyor rotation for the Auger.  Conveyor rotation keeps the geometry stationary but adds a relative motion to any contacts to represent a rotating geometry.  The Linear rotation kinematic should be similar in setup to what you have with the Conveyor motion, just ensure the Start Point is the centre of mass of the conveyor at t=0, that the axis of rotation is correct and that "moves with body" is selected.  Moves with body will ensure that when the auger is translating the rotation vector also translates so it's always rotating around the auger CoM.

Regards

Stephen

Very helpful. Thank you!