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A box stops moving suddenly

Hi everyone,

I’m trying to move an object on the ground without any friction in GAZEBO.

I created the default box model on the ground, and set both of mu and mu2 to zero. I left the default values in the other model parameters.

I set the gravity to (-0.1, 0, -9.8), and started the simulation. Although there was no friction force between the box and ground and no deceleration of the box, the box stopped moving suddenly in about 1 second in simulation time.

I implemented the ft_sensor on the model, it showed zero force and torque after the stop. It seemed that any calculation about the force was not conducted.

What happened? Can anyone help me fix this problem?