Car face wall architecture for a car such as a train car made from sandwich composite material

Abstract

A car belonging to a rolling vehicle, characterized in that it includes sidewalls in the form of a single piece made from composite material including a sandwich structure provided with a first skin on the outside of the car, a second skin on the inside of the car and a closed-cell foam or honeycomb core between the skins, the walls being provided with window openings formed by interruptions in the drapes of longitudinal fibres, transverse fibres and intersecting diagonal fibres, the openings having a polygonal shape that reduces the surface area of interrupted diagonal fibres in the corners of the openings.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is the National Stage of International Application No. PCT / EP2015 / 073863, having an International Filing Date of 15 Oct. 2015, which designates the United States of America, and which International Application was published under PCT Article 21(2) as WO Publication No. 2016 / 059147 A1, and which claims priority from and the benefit of French Application No. 1460011, filed 17 Oct. 2014, the disclosures of which are incorporated herein by reference in their entireties.BACKGROUND[0002]1. Field[0003]The presently disclosed embodiment concerns a car face wall architecture such as a train car made from sandwich composite material equipped with openings.[0004]The disclosed embodiment relates to a design solution for a structural panel made of composite material equipped with openings, i.e. bays, hatches, windows which are designed to lighten globally the weight of the structure, and are applicable in particular for the walls of a...

AI Technical Summary

Benefits of technology

[0044]The objective of the disclosed embodiment is thus to propose a solution to reduce the weight of the structures of a train body by use of composite materials, whilst maximizing the glazed surface available for the passengers.

[0045]The disclosed embodiment makes it possible to design a face (wall) of a car made of composite material in the form of a sandwich in a single piece, reinforced locally only for the interfaces, based substantially on high-strength carbon fibers, sampled in order to optimize the mechanical stresses as well as possible, but also taking into account requirements of finishing and integration, and comprising openings with a form suitable for better use of this sampling.

[0046]More particularly, the disclosed embodiment proposes a rolling vehicle car comprising lateral walls in a single piece made of composite material comprising a sand

Problems solved by technology

It is in fact in these conditions that the mechanical functioning of the structure is optimized, and thus consequently its weight and cost.

However, as represented in FIG. 3, at the panels of the faces, the presence of the angles of conventional bays with a rectangular form leads to cutting of the fibers between the top and the bottom of the face panel, which may make it necessary to increa

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