SU966190A1 - Laminate cellular panel - Google Patents

Description

one

The invention relates to silos and supporting structural elements made in the form of laminated products, and can find application in panel and shell structures of aircraft, in construction and shipbuilding.

A multi-layered panel is known, including carrier sheets bonded to a filler made of profiled sheets. Tlj A known multilayer cellular panel has a low carrying capacity and low damping properties.

Closest to the invention is a multilayer cellular panel comprising layers of profiled BaHHbiix sheets in the form of cellular structures in the form of truncated protrusions directed in opposite directions and bonded to each other along the areas of the protrusions, and supporting sheets connected to the profiled, placed with the inner sides, profiled l.istov and made with an opening, coaxially protrusion of profiled sheets and having a reinforcing edging, through which the protrusions of the profiled sheets are skipped captive-ae. with the inner surface of the edges of the bearing holes

(sheets f2j.

This panel possesses a significant incapacity, but insufficient depreciation properties, caused by a rigid combination of a layer package and the absence of working amortization.

ten

The aim of the invention is to improve the damping properties of a multi-layer panel.

This goal is achieved by the fact that the multilayer network panel,

15 comprising layers of profiled sheets in the form of cellular structures in the form of truncated projections directed in opposite directions and 2Q of projections connected along areas, and connected to the profiled supporting sheets arranged internally of the profiled and made with holes coaxial with the projections profiled sheets and having

Claims (2)

25 reinforced edging, through which the protrusions of profiled sheets are passed, connected to the inner surface of the edging, the panel is made with additional sheets of elastic and elastic material located between the supporting and profiled sheets connected to them and coaxial with the openings of the bearing and the projections of the profiled hole sheets with fringing, connected by its outer surface with the dressing of the holes of the supporting sheets and the inner surface with protrusions of profiled sheets, and bushings of elastic-elastic material, having an internal partition and connecting the tops of coaxial protrusions located in the bushings. In addition, the protrusions of the profiled sheets are made with steps on the side surface. FIG. 1 and 2 depict embodiments of the panel without steps and with steps made on the side surface of the protrusions of the profiled sheets, in section; Fig. 3 - panel elements, general view. The multi-layered panel consists of profiled sheets 1 and 2, having a double periodic lattice of projections 3 and 4, including protrusion areas 5 and ledges 6 on the lateral surface With an inner surface that coincides with the original surface of the base of profiled sheets 1 and 2, are connected by their outer the surface sheets 7 and 8, made of elastic-elastic material, having holes coaxial to the protrusions .: 3 and 4 profiled sheets, made with edging 9, connected by their inner surface with the outer surface of the protrusion 3 and 4. The tops of coaxial protrusions 3 and 4 of the profiled sheets 1 and 2 (including platforms 5 and partly the side surface of the protrusions are placed in sleeves 10 having an internal partition 11 and made in one piece from an elastic-elastic material, and are connected by their outer surface the inner surface of the sleeves 10, including the surface of the partition 11, with the inner surface of the sheets 7 and 8 are connected perforated supporting sheets 12 and 13, which have reinforcing edges of the holes 14, which are connected with their inner surface the surface of the edging of the holes 9 of sheets 7 and 3. The construction of the structure is carried out as follows. In the supporting sheets 12 and 13, the holes are cut through, and then the edges of the holes 14 are made by punching. Using the known stamping methods, shaped sheets 1 and 2 are formed in gradually deepening dies and punches. Depending on the manufactured panel version, the side surfaces of the protrusions 3 are molded. and 4 profiled sheets 1 and 2 may, with this, the steps 6 of a predetermined shape be fulfilled. The sheets 7 and 8 with fringing of the openings 9 and the sleeves 10 with the inner partition 11 are made of an elastic resilient material, for example rubber, including a fabric or wire braid, and can be made, for example, by casting in molds, and they can be made of materials with different characteristics that allows you to extend the range of vibration-damping. . The elastic-elastic sheets of material 7 and 8 are aligned with their openings with the protrusions 3 and 4 of the profiled sheets 1 and 2 so that the original surfaces of the sheets coincide and are glued together. The interconnected pairs of sheets (1 and 7, 2 and 8) are aligned with the projections 3 and 4 with the openings of the supporting sheets 12 and 13 so that their original surfaces coincide, and they are glued together between Himself, resulting in two halves of the multilayer structure. On the protrusions 3 of the profiled sheet 2, the sleeves 10 are put on top of the sleeves. 10, the protrusions 4 of the profiled sheet 1 are inserted and the connection is made to the two halves of the panel in a single piece by gluing. Under the action of intense pulsed loads, the absorption of vibrations occurs due to the elastic deformation of intermediate sheets 7 and 8 (with edging 9), bushes 10c with internal partitions 11 and ledges b made on the lateral surface of the projections 3 and 4 of the profiled sheets 1 and 2, since the latter are They are springs, the stroke of which is due to given shape. . By setting different thicknesses and characteristics of materials, sheets 7 and 8, and sleeves 10, as well as the rigidity of the ledges 6 of the projections 3 and 4 of the profiled sheets, it is possible to ensure the absorption of vibrations in a wide frequency range while maintaining the carrying capacity of the panel. . Thus, the positive effect of the proposed design is to improve the damping properties while maintaining the carrying capacity of the panel. Claim 1. Multi-layered mesh panel comprising layers of profiled sheets in the form of honeycomb structures in the form of truncated protrusions directed in opposite directions and connected along flat plates to the protrusions, and connected to the profiled carrier sheets placed from Its sides are profiled and made with holes, interconnected with protrusions of profiled sheets and having a reinforcing border, through which protrusions of profiled sheets are passed, connected to the inner surface of the edging, characterized in that the purpose of shock absorption is improved. properties, the panel is made with additional sheets of elastic-elastic material located between the bearing and profiled sheets connected to them and coaxial with holes of bearing and protrusions of profiled sheets with edging connected to their outer surface with edging- openings of supporting sheets and an inner surface with protrusions of profiled sheets, and bushings of an elastic-elastic material, having an internal partition and connecting the tops of coaxial protrusions located in the bushings. 2. The panel according to claim 1, about aphids, so that the protrusions of the profiled sheets are made with ledges on the side surface. . Sources of information taken. In attention during the examination 1. Author's certificate of the USSR 609852, cl. E 04 C 2/24, 1978. 2. USSR author's certificate cl. E 04 C 2/24, 1980 (Pro. No. 734359, Totip). V; 1g If 9 5 / / # 5 J 3 Fig.Z