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WO2014021699A1 - Panneau - Google Patents

Panneau Download PDF

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Publication number
WO2014021699A1
WO2014021699A1 PCT/LV2012/000013 LV2012000013W WO2014021699A1 WO 2014021699 A1 WO2014021699 A1 WO 2014021699A1 LV 2012000013 W LV2012000013 W LV 2012000013W WO 2014021699 A1 WO2014021699 A1 WO 2014021699A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
domes
dome
load
apexes
Prior art date
Application number
PCT/LV2012/000013
Other languages
English (en)
Inventor
Maris Kesners
Original Assignee
Maris Kesners
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maris Kesners filed Critical Maris Kesners
Priority to PCT/LV2012/000013 priority Critical patent/WO2014021699A1/fr
Publication of WO2014021699A1 publication Critical patent/WO2014021699A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3411—Dimpled spacer sheets
    • E04C2002/3433—Dimpled spacer sheets with dimples extending from both sides of the spacer sheet
    • E04C2002/3438—Dimpled spacer sheets with dimples extending from both sides of the spacer sheet with saddle-shaped dimples, e.g. eggcrate type spacer sheets

Definitions

  • the invention pertains to multilayer panels with a thin-wall core filling and can be used for the production of various load- bearing and insulating structures in any branch of mechanical engineering.
  • US3663346 describes an element of a honeycomb panel formed of spherical surfaces. They are orthogonally bounded tubule sections smoothly transitioning into each other and forming an interconnected structure. The structure is complex and requires sophisticated technology to produce.
  • JP201000655 describes a honeycomb sandwich panel having cell densification at the areas of maximum load (in the centre) thereby increasing the load capacity. Such a method may be used only in cases where the load distribution is precisely predictable. If the load may vary along the surface of the panel, this method is not applicable.
  • RU2290312 describes a panel with a thin-wall structure formed by truncated opposing pyramids.
  • the invention achieves increased noise attenuation.
  • this construction does not improve the mechanical properties of the panel.
  • EP0 65719 is most closely related to the present invention.
  • EP0465719 describes a panel with a thin- wall inner structure formed of cells containing domes positioned with bases directed outwards while their apexes are freely positioned within the cells.
  • the mechanical properties of the panel are improved and noise attenuation is increased.
  • the domes improve the mechanical properties of the panel only marginally, because their apexes are free within the cells.
  • the structure of the panel results in asymmetric properties with respect to the plane of the domes within the cells. It is the object of this invention to improve the mechanical and acoustical properties of the panel and simultaneously decrease the weight of the structure.
  • a panel comprised of a three- dimensional thin-walled structure of domes arranged in a checker-board pattern so that adjacent domes are oriented in opposite directions and transition gradually into the adjacent dome thus forming an interconnected system.
  • the panel may be formed with a plane or curved surface, while the apexes of the domes contact the outer surface of the system from at least one side.
  • Fig.3 double panel with an insert.
  • Fig.5 panel with divergent cover plates and variable pitch dome arrangement.
  • the object of this invention is achieved by the configuration of the panel 1, comprising a three-dimensional thin-walled structure with domes 2 arranged in a checker-board pattern so that adjacent domes 2 are oriented in opposite directions and transition gradually into the adjacent dome 2 thus forming an interconnected system of domes 2 arranged in a plane or a curved surface, the apexes of the domes coming into contact at least on one side with the cover plate of the system.
  • the main advantage of the dome construction lies in the fact that the load imposed on the dome 2 transforms into a pressure and tensile load that is evenly distributed across the whole dome. This allows fabrication of structures with a minimal amount of material, which in turn substantially decreases the weight of the structure. Acoustically, sound is repeatedly reflected within the panel and consequently diffused. Hence the sound insulation properties of the panel are improved.
  • Fig.l. shows the arrangement of domes 2. Adjacent domes 2 are oriented in opposite directions and marked respectively with - and b - "o". Such arrangement of domes, as much as possible, ensures uniform mechanical properties of the panel 1 across the whole area of the panel 1.
  • Panels 1 may consist of several layers with a corresponding junction (Fig.2.) of dome apexes in each separate layer, or the apexes may be joined by an insert (Fig.3. ⁇ . In areas where the load 1 across the surface of the panel varies, panels with alternating cross-sections can be used. They may have a constant (Fig. .) or varying (Fig.5.) pitch in the spacing of the domes 2.
  • the panel may be constructed with a plane or curved surface. Depending on the type and degree of the load, the panel 1 can be closed with system cover plates from one side, or from both sides, along the entire area or only partially.
  • the thickness of the dome walls may be varied to even out the load. For instance, at the transition points from one dome 2 to the oppositely directed one, the walls may be made thicker, thus forming reinforced areas.
  • the apexes of the domes may be truncated and/or made thicker than the other areas of the dome.
  • An intermediate layer of glue, solder or other material conforming to the apex of the dome may be provided between the apex and the cover plate.
  • the cover plate may be dimpled to fit the apex of the dome for greater contact area.
  • the domes can be formed as a cylindrical shell of any curvature, for instance, part of a circle, sinusoid, ellipse, hyperbole and other. Calculations were made to compare properties of dome and honeycomb panels.
  • the thickness of the honeycomb material is fixed - 1.0 mm. Mesh 1.0 mm, force 10 N.
  • Table 1 shows parameter calculations for the dome when applying a load at various angles.
  • Table 2 shows the calculations for the honeycomb when applying a load at various angles.
  • domes 2 with thin walls may be easily produced by various technological methods.
  • Flexible materials metal etc.
  • Complex shapes and structures with a variable pitch and/or dome height and spun shapes may be produced by punch-press methods.
  • Thermoplastic polymer materials may be pressed, drawn with air at increased or decreased pressure, cast or in other ways.
  • the structure is made of sufficiently light and durable material, very rigid diffusers of acoustic systems in a complex configuration can be produced.
  • the panel can be used in aerospace engineering, in shipbuilding, automotive industry, carriage engineering, and construction, in audio equipment and in any other branch demanding light and mechanically durable structures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un panneau (1), comprenant une structure à paroi mince tridimensionnelle avec des dômes (2) agencés en formation décalée de façon à ce que chaque dôme (2) adjacent soit dirigé de manière opposée et effectue une transition graduelle jusque dans le dôme (2) adjacent, formant ainsi un système de dômes (2) interconnectés agencés dans un plan ou en forme de surface vrillée, les sommets des dômes (2) venant en contact à partir d'un côté au moins avec la surface externe du système. Le panneau peut être utilisé en ingénierie aérospatiale, en construction navale, dans l'industrie automobile, en ingénierie du transport, et dans la construction, dans les équipements audio, et dans toute autre branche exigeant des configurations légères et mécaniquement durables.
PCT/LV2012/000013 2012-08-03 2012-08-03 Panneau WO2014021699A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/LV2012/000013 WO2014021699A1 (fr) 2012-08-03 2012-08-03 Panneau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/LV2012/000013 WO2014021699A1 (fr) 2012-08-03 2012-08-03 Panneau

Publications (1)

Publication Number Publication Date
WO2014021699A1 true WO2014021699A1 (fr) 2014-02-06

Family

ID=46650846

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/LV2012/000013 WO2014021699A1 (fr) 2012-08-03 2012-08-03 Panneau

Country Status (1)

Country Link
WO (1) WO2014021699A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH407492A (de) * 1960-09-14 1966-02-15 Altherr Alfred Hohlkammerplatte
US3663346A (en) 1970-07-22 1972-05-16 Nasa Honeycomb core structures of minimal surface tubule sections
EP0465719A2 (fr) 1990-06-02 1992-01-15 Eurocopter Deutschland Gesellschaft mit beschränkter Haftung Produit plat ayant une structure en nid d'abeille et son procédé de fabrication
DE10335091A1 (de) * 2003-07-31 2005-02-17 Annette Jacob Verbundplatte mit zweiachsiger Tragfähigkeit
FR2871406A1 (fr) * 2004-06-14 2005-12-16 Chomarat Composites Soc Par Ac Panneau espaceur composite remplissant une double fonction de renfort et d'isolation phonique
RU2290312C2 (ru) 2004-08-24 2006-12-27 ФГУП "НИИАСПК" - Федеральное государственное унитарное предприятие "Научно-исследовательский институт автоматизированных средств производства и контроля" Многослойная панель
JP2010000655A (ja) 2008-06-19 2010-01-07 Mitsubishi Electric Corp ハニカムサンドイッチパネルおよびその製造方法
EP2322344A1 (fr) * 2004-05-19 2011-05-18 Michael Schäpers Element de type sandwich

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH407492A (de) * 1960-09-14 1966-02-15 Altherr Alfred Hohlkammerplatte
US3663346A (en) 1970-07-22 1972-05-16 Nasa Honeycomb core structures of minimal surface tubule sections
EP0465719A2 (fr) 1990-06-02 1992-01-15 Eurocopter Deutschland Gesellschaft mit beschränkter Haftung Produit plat ayant une structure en nid d'abeille et son procédé de fabrication
DE10335091A1 (de) * 2003-07-31 2005-02-17 Annette Jacob Verbundplatte mit zweiachsiger Tragfähigkeit
EP2322344A1 (fr) * 2004-05-19 2011-05-18 Michael Schäpers Element de type sandwich
FR2871406A1 (fr) * 2004-06-14 2005-12-16 Chomarat Composites Soc Par Ac Panneau espaceur composite remplissant une double fonction de renfort et d'isolation phonique
RU2290312C2 (ru) 2004-08-24 2006-12-27 ФГУП "НИИАСПК" - Федеральное государственное унитарное предприятие "Научно-исследовательский институт автоматизированных средств производства и контроля" Многослойная панель
JP2010000655A (ja) 2008-06-19 2010-01-07 Mitsubishi Electric Corp ハニカムサンドイッチパネルおよびその製造方法

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