Arrangement for providing a pulsing compressive force, comprising: a) a first mass, which provides a contact surface for transferring the pulsing compressive force onto a body (3, 13), in particular onto a ground surface to be compacted; b) a second mass; c) a first spring-damper-system (5, 6) via which the first mass and the second mass are coupled with each other to form a first vibrating system (1, 4, 5, 6); d) an unbalance exciter by means of which this first vibrating system (1, 4, 5, 6) can be excited to vibrate, in particular to vibrate in resonance; wherein in the static state of the first vibrating system (1, 4, 5, 6) the second mass exerts a static force on the first mass via the first spring-damper-system (5, 6) in a first direction, characterized in that the first mass and the second mass are coupled to one another via the first spring-damper-system (5, 6) in such a way that via the first spring-damper-system (5, 6) in the intended operation no forces can be transferred from the first mass in the first direction to the second mass and no forces can be transferred from the second mass in a second direction, which is opposite to the first direction, to the first mass, and in that the arrangement is adapted such that the coupling of the two masses (1, 4) via the first spring-damper-system (5, 6) can be temporarily suspended during the intended operation, in particular periodically, by a vibratory movement of the second mass in the second direction, in that the second mass can then execute a part of its oscillation path in the uncoupled state, and the coupling of the masses (1, 4) via the first spring-damper-system (5, 6) is then, following a reversal in direction of the vibratory movement of the second mass, in particularly abruptly, re-established. a) a first mass, which provides a contact surface for transferring the pulsing compressive force onto a body (3, 13), in particular onto a ground surface to be compacted; b) a second mass; c) a first spring-damper-system (5, 6) via which the first mass and the second mass are coupled with each other to form a first vibrating system (1, 4, 5, 6); d) an unbalance exciter by means of which this first vibrating system (1, 4, 5, 6) can be excited to vibrate, in particular to vibrate in resonance; the first mass and the second mass are coupled to one another via the first spring-damper-system (5, 6) in such a way that via the first spring-damper-system (5, 6) in the intended operation no forces can be transferred from the first mass in the first direction to the second mass and no forces can be transferred from the second mass in a second direction, which is opposite to the first direction, to the first mass, and in that the arrangement is adapted such that the coupling of the two masses (1, 4) via the first spring-damper-system (5, 6) can be temporarily suspended during the intended operation, in particular periodically, by a vibratory movement of the second mass in the second direction, in that the second mass can then execute a part of its oscillation path in the uncoupled state, and the coupling of the masses (1, 4) via the first spring-damper-system (5, 6) is then, following a reversal in direction of the vibratory movement of the second mass, in particularly abruptly, re-established.