damping device for the displacement of a part of a vehicle including a metallic yarn

The device has a pyrotechnic actuator (22) to move a piston (9). A cable (21) has an end connected to a fixed part (27) of a vehicle. The actuator is connected to a piece to be dampened and cooperates with the cable to slow down and then stop the piece. The actuator is fixed to a support (20) connected to the piece. The support has two stoppers (24) for guiding the cable.