Separation device with damped lashing stud

A device for separating a second part from a first part, including a first interface fixed to the first part and a second interface fixed to the second part, a docking stud passing through the first and second interfaces and being held at the first interface by a separation nut and at the second interface by a first nut/locknut assembly, the docking stud being covered with a cap secured to the second interface and receive the docking stud once the separation nut has broken and the first and second interfaces have been separated, wherein the docking stud includes a retraction spring for extracting the docking stud from the first interface, propelling the docking stud towards a damping material fixed at a bottom of the cap and holding the docking stud at the bottom of the cap by a residual holding force alone of the retraction spring, the docking stud having a first diameter on a first portion of the docking stud passing through the first and second interfaces and receiving the first nut/locknut assembly and a second smaller diameter on a second portion of the docking stud beyond the first nut/locknut assembly, extending up to a terminal part of the docking stud, the second diameter receiving a second nut/locknut assembly or being a tapped hole receiving an assembly screw, wherein the damping material includes an orifice to receive the second nut/locknut assembly when the second diameter receives the second nut/locknut assembly.