Structure with an insert and assembly method

A method for assembling an insert provided with an elongate part ending in a head with a recess of a structure, which method uses a propulsion tool guiding a first striker slide pushing a striker in the form of a free projectile, and including a distributor device for controlling the forwards or backwards motion of said first striker slide, and a tube guiding said striker and said tube including a head with an internal profile adapted to the head of the insert to be produced;

• according to which method a bar of material made of an at least partially amorphous material is inserted into the tube, said bar of material being intended to form said insert, said bar is heated to a predetermined temperature, a propulsion fluid is injected into said propulsion tool and a second distributor slide comprised in said propulsion tool is operated to move the first striker slide at a predefined speed and to drive the striker by percussion, which, as it moves in the tube, strikes the bar which moves in the tube until the bar is forcibly inserted into said recess and is deformed so that the bar occupies the volume of said internal profile of said head.