Abstract: A structural part for a body in white of a vehicle includes a frame formed by at least two branches connected to one another in at least one connecting zone and separated from each other by at least one gap in a zone of least stress. The frame is made of a first composite material comprising a plurality of continuous fibers impregnated with a first polymeric material. A body is integral with the frame extending in the gap and connecting the two branches in the zone of least stress. The body is made of a second material that is different from the first composite material and comprises at least a second polymeric material, wherein the body is integral with the branches.

Abstract: An assembly method between a part made of metal material and a part made of organic matrix composite material, said method having a step of providing two parts, each including a surface to be welded, and the surface to be welded of said composite part is made up, at least partially, of an exposed portion of at least one metal insert which is partially embedded in said composite part; positioning said surfaces to be welded opposite and separated from each other; and projecting, at high speed, the surface to be welded of the metal part or the exposed portion of the metal insert, onto one another, to obtain high-speed clamping to one another and to obtain a weld between the exposed portion of the metal insert of the composite part and the complementary portion of the surface to be welded.

Abstract: An assembly method between a part made of metal material and a part made of organic matrix composite material, said method having a step of providing two parts, each including a surface to be welded, and the surface to be welded of said composite part is made up, at least partially, of an exposed portion of at least one metal insert which is partially embedded in said composite part; positioning said surfaces to be welded opposite and separated from each other; and projecting, at high speed, the surface to be welded of the metal part or the exposed portion of the metal insert, onto one another, to obtain high-speed clamping to one another and to obtain a weld between the exposed portion of the metal insert of the composite part and the complementary portion of the surface to be welded.

Abstract: A method for elaborating an assembly which includes at least one composite structure part, one metal interface part and one metal structure part, said method includes a first step for assembling the part to the part in order to form a sub assembly and a second assembling step for welding the interface part of said sub assembly to part. The composite structure and metal interface parts are pre-equipped with male/female type mating connections and with locking devices locking the connection. The method can include, during the first assembling step, a phase for pre-assembling the parts by interlocking the male/female mating connections and a phase for locking said interlock by deforming by pressing at least one portion of the locking devices pre-equipped in the metal interface.

Abstract: A method for elaborating an assembly comprising at least one composite structure part, one metal interface part and one metal structure part, said method includes a first step for assembling the part to the part in order to form a sub-assembly and a second assembling step for welding the interface part of said sub-assembly to part. As the composite structure and metal interface parts are pre-equipped with mating connecting means of the male/female type and with means for locking said connection, said method includes, during the first assembling step, a phase for pre-assembling the parts by interlocking male/female mating connecting means and a phase for locking said interlock by deforming by pressing at least one portion of the locking means pre-equipping the metal interface.