EP0897097B1 - Sandwich plate for protection from explosive mines - Google Patents

Sandwich plate for protection from explosive mines Download PDF

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Publication number
EP0897097B1
EP0897097B1 EP19980114601 EP98114601A EP0897097B1 EP 0897097 B1 EP0897097 B1 EP 0897097B1 EP 19980114601 EP19980114601 EP 19980114601 EP 98114601 A EP98114601 A EP 98114601A EP 0897097 B1 EP0897097 B1 EP 0897097B1
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EP
European Patent Office
Prior art keywords
protection device
characterised
device according
mine protection
structural element
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP19980114601
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German (de)
French (fr)
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EP0897097A2 (en
EP0897097A3 (en
Inventor
Gerd Kellner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krauss Maffei Wegmann GmbH and Co KG
Original Assignee
Krauss Maffei Wegmann GmbH and Co KG
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Priority to DE1997134950 priority Critical patent/DE19734950C2/en
Priority to DE19734950 priority
Application filed by Krauss Maffei Wegmann GmbH and Co KG filed Critical Krauss Maffei Wegmann GmbH and Co KG
Publication of EP0897097A2 publication Critical patent/EP0897097A2/en
Publication of EP0897097A3 publication Critical patent/EP0897097A3/en
Application granted granted Critical
Publication of EP0897097B1 publication Critical patent/EP0897097B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H7/00Armoured or armed vehicles
    • F41H7/02Land vehicles with enclosing armour, e.g. tanks
    • F41H7/04Armour construction
    • F41H7/042Floors or base plates for increased land mine protection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00Armour; Armour plates
    • F41H5/02Plate construction
    • F41H5/04Plate construction composed of more than one layer
    • F41H5/0442Layered armour containing metal
    • F41H5/0457Metal layers in combination with additional layers made of fibres, fabrics or plastics

Description

The invention relates to a mine protection device for land, air or water vehicles.

The protection of vehicles and their occupants against mines is increasing Significance, because especially when used in crisis areas with many hidden Anti-tank or anti-tank mines must be expected. Partially exist no more laying plans for this mine, because they are either deliberately not laid out were lost or lost in the chaos of war. When driving into unenlightened or released terrain, there is therefore an increasing number of mine explosions with usually serious consequences for the vehicles and their crews.

When it comes to the effects of a mine explosion, two criteria must be observed; namely the blast or pressure wave caused by the detonation of the explosive and on the other hand, especially in the case of the anti-splinter defense mines, the splinter power through deformed fragments or through the mine shell itself.

In the recent retrofit programs for vehicles with insufficient Mine protection was primarily given to splinter protection. The floor areas of the vehicles to be protected are covered with splinter protection material, for example made of aramid fabric, GRP or composite (ceramic composite material) or the like provided subsequently, the attachment of this Material in the interior of the vehicle, for example in the cab, or outside, for example in the wheel arch area. These protective measures bring about usually sufficient security against the mine fragments. However, they do not offer any adequate protection against the blast effect of an anti-tank mine.

When scorching the floor area of an armored vehicle and in particular an infantry fighting vehicle or main battle tank with a pressure mine and an explosive charge from 5 to 10 kg TNT there is a dynamic deflection due to the blast effect or a swinging through the floor of the vehicle, which is large enough for the crew at least incapacitate even if the floor of the vehicle does not crack. Furthermore, the dynamic deflection of the vehicle floor causes deformation the side walls, which removes the attached devices from the brackets are torn and in part, also endangering the crew, uncontrolled by fly the fighting room.

US 4,404,889 goes into this problem in detail. One solution would be It is among other things to decouple crew and equipment from the dynamic load. This requires however, a considerable additional design effort.

Technically optimal would therefore be a measure which the dynamic deflection of the vehicle floor and the side walls prevented or at least sufficient severely limited and thus also the shock load on the vehicle floor or on the Forest structure reduced due to mine detonation.

US 4,404,889 describes a composite armor for armored vehicles and especially for the vehicle floor, which essentially consists of five basic materials:

  • one inner and one outer armor steel plate with a thickness of approx. 13 and 19 mm,
  • Balsa wood with a layer thickness of about 12 mm,
  • a ballistic protective layer made of Kevlar with a thickness of approx. 13 to 19 mm, which is embedded between two thin (0, 3 to 1 mm) steel foils, and
  • a honeycomb structure with a thickness of approx. 15 mm.
  • The honeycomb structure can be filled with materials that additionally absorb and distraction of the honeycomb structure towards the blast effect strengthen. The balsa wood is used in the dynamic deflection of the composite structure compresses due to the blast effect and thus creates a deformation space for the upstream ballistic Kevlar protective layer. This sandwich arrangement between two relatively thick armor steel sheets is shown very varied, whereby air gaps can also be introduced.

    DE 78 16 558 U1 discloses a bulletproof security composite panel, which among other things. to Securing partitions, door panels and flooring panels can be used can. The sandwich plate consists of a metallic and bulletproof layer, on the one an inhibiting layer against hot tools and a rigid polyurethane foam layer are upset. About the inhibition layer and wall thicknesses of the No information is given on the respective layers.

    US 4,061,815 describes a layer structure composed of one or more polyurethane layers between an outer layer of aluminum or GRP and an inner one thin holding layer made of the same materials. One of the inner layers can can also be formed by a hard foam of the most varied types. The polyurethane layer can with hard fillers, such as ceramic or granite particles, quartz or metallic particles.

    DE 29 34 050 A1 is a composite panel for armoring vehicle interiors known from a multi-layer structure made of two armored steel plates and a filling layer made of hard foam or wood and intermediate layers made of GRP is.

    DE 31 19 786 A1 discloses a device for securing flat structures, in particular metallic floor parts of motor vehicles, against the action of Explosive devices. Here is on one side of the fabric (inside of the vehicle floor) at least one layer of a resin-impregnated, coherent fiber mat applied and firmly connected to the fabric.

    A multilayer structure is disclosed in DE-OS 22 01 637, in which between two steel layers a composite body made of steel fiber fleece and polyurethane foam located. The steel fibers can also be used in various other plastics or copolymers can be embedded.

    DE-OS 21 51 015 is a bulletproof, consisting of several layers Armor for motor vehicles described, preferably made of plastic layers Polyamide can be used, in which a fabric or fleece made of metal fibers is embedded is. In a further marking, the polyamide plate is in the form of a Corrugated plate formed or the corrugated plate consists of tightly joined pipe shells.

    DE 36 27 485 A1 discloses the floor covering of a safety passenger car, that of several bulletproof fabrics and a foam layer exists between the vehicle floor and these fabric layers.

    A flexible and high temperature resistant protection against bullets and granite fragments is described in US 2,668,420, in which shredded Teflon in a fabric bag is arranged from deformable material. Such protection can be achieved easily adapt to the respective curved contour of the device to be protected.

    US-A-2 405 590 discloses a protection device for watercraft against mine explosion described, which is composed of several layers, wherein From the load side, the layer structure is initially a metal plate, then a layer of granular material, such as sand, then again a metal plate, followed by a layer of corrugated Has metal springs, on which in turn a metal plate, a layer of granular material and a metal plate forming the back.

    As a state of the art it can be assumed that sandwich structures with a wide variety Materials and in a variety of arrangements are known. Indeed Most orders refer to a different task, i.e. the security against bullets and shell fragments. With car floor protection against hand grenades, the blast effect is relatively insignificant, so that these are known Instructions are also not relevant to the task.

    Based on the described prior art, it is an object of the invention to Mine protection device of the type mentioned in such a way that the The threat from mines largely compensated for by splinter and blast effects becomes. Another object of the invention is to at least partial areas to provide the mine protection device for other vehicle-specific uses.

    According to the invention, this object is achieved by the features of patent claim 1. A further use problem is solved in claims 23 to 25. Advantageous developments and refinements of the invention are in the others Subclaims described.

    The mine protection according to the invention can be stationary with the vehicle, as a so-called integrated solution. Alternatively, it can also be used as an adaptable mine protection be formed, which is only attached to a vehicle when needed. This offers the advantage that the vehicle and mine protection device are treated logistically separately and the vehicles can only be used in a mine at risk Area with the mine protection device. As a result, the mine protection device not be moved with the vehicle during normal driving.

    However, the mine protection according to the invention can also consist of a mixed arrangement, i.e. outside adapted and inside integrated arrangement exist to in particular Dimensions of the local conditions of a vehicle construction or possibly necessary Retrofitting measures to meet existing vehicles.

    Further advantageous details are contained in the following description of the drawings, which represent examples of the invention. Show it:

    Figure 1
    a section through a mine protection device (integrated arrangement;
    Figure 2
    a section through a mine protection device (integrated / adapted);
    Figure 3
    a section through a mine protection device (adapted arrangement);
    Figure 4
    a section through a modified structural element plate;
    Figure 5
    a section through a further modified structural element plate;
    Figure 6
    a section through a structural element slat with friction and expansion elements;
    Figure 7
    a section through a structural element plate with damping elements;
    Figure 8
    a section through a structural element plate with friction or compression elements and a solid support plate;
    Figure 9
    a section through a structural element plate with double-acting friction and compression elements;
    Figure 10
    a two-layer structural element plate with undulating intermediate layers;
    Figure 11
    a two-layer structural panel with integrated profile bodies;
    Figure 12
    a section through a preferred mine protection device:

    The figures show only the features essential to the invention. Therefore, they are all in drawn in a simplified form to clearly emphasize the essentials of the invention. Furthermore, only protection of the vehicle floor is spoken of in the following. However, it is a feature of the invention that the mine protection according to the invention in the same way as described for the side protection of vehicles applies. The mine protection device is essentially used below for land vehicles shown. However, in the sense of the invention, vehicles are also considered to be vehicles and aircraft, insofar as this described or an equivalent mine protection device is technically applicable. In particular, the mine protection device applies to Protection of the interior of armored vehicles or main battle tanks.

    In Figure 1, the mine protection device according to the invention is shown as an integrated solution in its basic structure. The load side, ie the outer and thus the load wall of the vehicle floor 2 consists for example of armored steel, aluminum or fiber composite materials. A first layer 3 of hard foam with a density of more than 100 kg / m 3 and a thickness of at least 10 mm is arranged behind it. This hard foam layer 3 dampens the strong dynamic movement of the outer wall 2, which arises due to the blast effect of a mine 5 when it is blown under the vehicle floor, and distributes the pressure load over a large area.

    The rigid foam layer 3 is followed by a structural element plate 6, which in the example shown according to Figure 1 with only two boundary layers 7 and 8 and an intermediate layer 9 truss-like structure, so as to make the structure clear overall. The cover or boundary layers 7 and 8 are with the framework-like intermediate layer 9 connected for example by an elastic adhesive. With metallic Materials can also connect the cover plates 7 and 8 to the layer 9 Welding, soldering, riveting or the like.

    The inner (actual) vehicle floor 4 is located above the structural element plate 6 as a termination to the crew compartment. A further hard foam layer 10, which has a low density, for example less than 100 kg / m 3 , is attached between the boundary layer 8 (cover layer) and the inner vehicle floor 4. In a further embodiment of the invention, a very rigid and light layer 11, for example made of pressed synthetic wood (Lignostone) or CFRP, can be arranged between the vehicle floor 4 and this second hard foam layer 10. This rigid layer 11 can also be designed in a special way as a splinter protection plate, for example made of ceramic fiber composite materials or ceramic-lignostone composite or similar arrangements, in order to ward off incoming fragments or similar fragments in front of the relatively thin wall to the team room. Such a splinter protection plate (layer 11) can generally also be positioned at other points in the layer structure, for example between the outer vehicle floor plate 2 and the first hard foam layer 3 or between hard foam layer 3 and structure plate 6.

    In the spaces 12 of the structural element plate 6 geometrically corresponding Bodies, for example elements with damping properties 14 and / or energy-absorbing properties 13 may be introduced.

    These geometrically corresponding bodies 13 and 14 can in a preferred manner already in the manufacture of the structural element plate 6, for example in the DP-RTM Process (DLR Braunschweig) as a composite panel made of carbon fiber (CFRP) cheap can be produced as a lost molded body. Then would be no separate moldings additionally required.

    Basically, the integrated arrangement of the individual described according to FIG Layers can also be replaced by an adapted-integrated arrangement in which a Part of the layers behind the load side, i.e. the outer vehicle floor 2 in Inside the vehicle (integrated) and the rest of the layers outside on the floor of the vehicle 2 (adapted) are attached.

    An example of the adapted-integrated mine protection solution is shown in FIG. 2. The Layers shown in FIG. 1 are arranged differently in this case. The adapted Part consists for example of a splinter protection plate or layer 11 and the Hard foam layer 3, which are located in a thin housing 2.1, which with the outer floor panel 2 of the vehicle connected by mechanical fasteners is. The structural element plate 6 and a light hard foam plate are an integrated part 10 between the outer floor panel 2 and the inner vehicle floor 4 arranged. This arrangement can, of course, by adding layers to any Digits are added.

    The entire mine protection according to the invention can also be below the outside alone Vehicle floor 2 can be attached as an adapted solution. But mostly only very small Construction depths are permitted due to the required ground clearance, such is Mine protection structure from only a few layers, which are made of highly effective materials are filled. Based on FIGS. 1 and 2, such is adapted Mine protection shown in Figure 3.

    Such an adapted layer structure can be firmly connected to the vehicle floor 2 be or only be attached on site by simple mechanical fasteners. The same applies to an integrated-adapted solution for the outside one Layer structure. As a result, the vehicle remains in use until it is used before Crisis area easier and more agile.

    The described, not firmly integrated mine protection devices can then be Transport separately from land, water or air vehicles.

    Generally, when a vehicle floor is scorched, they play with an explosive charge Mass inertia of the structural parts involved, the propagation of the shock load, the plastic work capacity and the way to work (deflection) due to the high Dynamics of movement play a special role.

    This results in further approaches for the mine protection according to the invention.

    Basically, as much mass as possible should be involved during the dynamic process his. Here, the dynamic connection of the individual masses is particularly important note that usually involved with the wave propagation speed in the Materials. The so-called acoustic also plays a key role here Impedance p x c, with p as the density of the materials involved and c as the speed of sound propagation. The quotient (p1 x c1 / p2 x c2) provides information about this the impact portion passed on or reflected between two layers.

    Plastic work (internal friction) can either be achieved by a homogeneous component, for example a thick plate with sufficient dynamic-plastic behavior or by constructive measures.

    Time and mass-minimized, i.e. thus the force-optimized Use of the materials involved plays the decisive role. Therefore, too predominantly fiber-reinforced materials used in mine protection. But it will Often overlooked that such substances can be very hard dynamically.

    Light structural parts can be accelerated better due to their lower inertia and thereby be included in the energy distribution or energy degradation, sufficient interception paths required. In this respect there is also an air gap in Combination with other effective structural parts is very suitable.

    In general, but especially in the case of an adapted mine protection solution, it is very important at what angle the pressure surge occurs and whether rapid relief, for example due to back pressure, is possible. This results in the following constructive approaches for the design of optimal mine protection:

    • the shock wave should strike the mine protection device at an angle
    • the shockwave should counteract relief as soon as possible
    • a combination of both, ie oblique impact of the shock wave and relief from back currents.

    In the examples shown below, these design specifications are in Approach already taken into account, in particular the truss-like structural element panels (Angle) or perforated plates in connection with the various resilient or damping elements are particularly suitable as detailed solutions.

    The truss structure 6 according to FIG. 1 is shown modified in FIG. 4. In the structural element plate 6 are additional webs 15, in this example perpendicular to the direction of movement the boundary layers 7 and 8, attached. This would be the case with dynamic Compressing the structural element plate 6 after a resistance noticeably increase certain path. You can also use the angular position of the truss structure 9, the thickness and the material of variable resistance to dynamic Stop movement. This means that mine protection can be used against different threats be adjusted.

    In FIG. 5, plastically deformable intermediate layers are to be used in the structural element plate 6 Bars 16 (zigzag), such as those made of metal, in particular steel or others Metals with corresponding dynamic-plastic properties or fiber composite materials or elastomers can be used. But also springy Elements can be used as intermediate layers.

    FIG. 6 shows a structural element plate 6 with friction and expansion elements 17 and 18, which first increase the resistance continuously under dynamic load and come to a stop after a set path and then the resistance again Lift. The friction and expansion elements 17 and 18 may be more preferred Be carried out in strips. The material is both plastic and elastic Materials with high damping properties provided.

    As a further embodiment of the structural element plate 6, FIG. 7 shows an intermediate layer slotted, arched profiles that are arranged in strips. With the dynamic The profiles will bulge or bend plastically and thus create a load generate variable resistance. Metals also come as a material, but also Plastics and especially elastomers in question.

    FIG. 8 shows a modification of the damping arrangement according to FIG. 6, in which the strip-shaped damping elements 17 in a relatively solid support plate 20 can run in with correspondingly milled grooves.

    FIG. 9 shows a damping intermediate layer in which the friction or Compression elements 23 act on both sides analogously to FIG. 6, the elements being Strips can be made very easily. The counter bearings 21 are alternatively also to be produced as strips or plates with corresponding grooves. The upsetting elements 23 are preferably held by a flat element 22, similar to the ball guides (Cage) for a ball bearing (roller bearing).

    The intermediate layers according to FIGS. 6 to 9 can also be made of round or differently shaped ones Individual elements, often in regular or irregular distribution are arranged between the two boundary layers 7 and 8 are formed. Furthermore, the individual elements can be rod-shaped and in pairs at a distance be arranged parallel to each other.

    Then the boundary layer 7 can be made of a perforated carrier plate in a preferred manner 20 or 21, for example perforated panels (round, square) made of high-strength armored steel, for example MARS 300 or 600, nitrogen alloy steel with the highest hardness and at the same time very high elongation, stainless steel, aluminum or fiber composite materials (CFK, GFK) be formed. Figure 8 and Figure 9 were such an arrangement in exemplarily suffice.

    In FIG. 10 there are two intermediate layers 24 made of, for example, sinusoidally corrugated, metallic Material formed. Here, a multi-layer structure is indicated, the in principle can also consist of very many of the thin individual layers, for example ten or twenty intermediate layers 24 with the respective cover layers 7 and 8. Such an arrangement is very advantageous if there is sufficient depth for mine protection is available. In addition, the layers or layers 24 can be made of materials of different thicknesses or made of changing materials. In this way, a certain, increasing plastic resistance can again can be set.

    Experiments have shown that when an armored vehicle is fired on Vehicle without special mine protection, a strong plastic deformation of the vehicle floor in the order of 50 mm to 100 mm, depending on the vehicle and mine type or floor panel and blasting distance, if the wall thickness of the floor panel is still sufficiently thick and does not tear open due to the pressure load. The dynamic Deflection takes place in the very short time of one to several milliseconds and is about twice to three times the plastic deformation.

    A multi-layer structure according to the invention from an optimal number thin individual or boundary layers 7 and 8 and intermediate layers 24 is then in particularly suitable to minimize the dynamic deflection of the vehicle floor.

    In the mine protection arrangement according to FIG. 1, the structural element plate 6 being made of a multilayer structure with undulating intermediate layers 24 and the respective Boundary layers 7 and 8 is formed by the rigid foam layer 3 already damped movement of this vehicle floor layer facing the load 2 successively in the thin boundary and intermediate layers further decreased. The many undulating intermediate layers 24 in the respective individual structures are pressed together (crash zone) and form together with the many boundary layers 7 and 8 an increasingly massive Layer packet. Depending on the selected height of this layer structure, the movement of the vehicle floor even within the layer structure to a standstill come.

    Due to the very rigid arrangement of the multi-layer structure or the respective individual layers and their arrangement, for example in the case of crosswise signs Bonding, dynamic bending of the entire sandwich structure is practical excluded or at least very difficult. Depending on the dimensioning of Rigid foam layer 3 and the multilayer structure 6 therefore do not become or at least only a minimal deflection of the mine protection structure according to the invention at the top, i.e. give the actual vehicle interior floor 4. The last boundary layer 8 of the sandwich structure 6 as a termination to the vehicle interior can be made slightly stronger to withstand the loads from the vehicle crew or to be able to record devices while driving.

    A metal sandwich structure according to FIG. 10 formed from a plurality of structural layers 6 can, for example, be formed from thin aluminum or steel layers. Such an embodiment is known under the brand name METAWELL plate from VAW Metawell GmbH. A double plate made of aluminum, for example, has a height of eleven millimeters with a weight per unit area of 9.4 kg / m 2 . The bending moment in the longitudinal direction, ie measured across the shafts, is 2050 Nmm / mm and transversely, ie with the shafts, 1240 Nmm / mm. These differences in the bending moment can be compensated for by a cross arrangement of the individual layers. The permissible compressive force for the double plate is 3.5 N / mm 2 . Higher values can be achieved with corrugated metal plates made of galvanized steel, which can withstand a pressure load up to three times that of the corresponding aluminum plates. Of course, any combination of aluminum and steel meta corrugated sheets are also conceivable or other changes to the metal sandwich structure, which are explained below.

    The individual layers 6 of the metal sandwich structure can be designed very variably. In a departure from the course shown in FIG. 10, the undulating intermediate layers 24 each run diametrically offset from one another or be shifted by 180 ° in the longitudinal direction. This means that valleys and Height of the waveform in the case of a multilayer structure directly opposite. Another very effective design lies in the cross arrangement of the wave layers. Here is each layer is arranged rotated by 90 °.

    Other variants for the undulating intermediate layers 24 can be seen in the Form itself. For example, are Z-shaped or angular or still other design options for the intermediate layers 24 are conceivable. It is important Feature that the intermediate layers 24 with vertical or inclined pressure load dodge sideways or can be compressed to avoid the crash zone to build.

    Another design option for the multilayer structure is shown in FIG 11 using the example of the construction with metawell plates according to FIG. 10. In the Layer structure 6 are laterally spaced, open or closed Hollow profile body 26 used. At the same time it is shown that even homogeneous bodies or full profile body 25 can be used. Furthermore, the mixture is hollow Full profile bodies 26 and 25 possible. In the second intermediate layer is the example the introduction of an open profile body 27 shown.

    In the expansion of the structures according to FIG. 11, the hollow and solid profile bodies 26 and 25 or the open profile body 27 between the respective layers 6 of the multilayer Structure construction also as a load-dependent, deformable structural body be introduced from metal or plastic.

    Substances with certain properties can be filled into the hollow profile body 26. In this case, for example, other hollow bodies that are deformable on liquids are elastic and / or plastically deformable materials or substances with shock-absorbing properties thought. This structure according to Figure 11 thus offers a wide range of interesting Possible uses for a formed from several layers 6 Structure in addition to its primary mine protection.

    Examples include the inclusion of liquid fuels for drive motors, the design for fish intake air or exhaust air from the drive motors and picked out the training as a heat exchanger. This list is not complete and only indicates the versatility of the multi-layer structure Mine protection when used in a vehicle.

    Finally, it is also an object of the invention that the mine protection device not only consistently formed over a large area, but rather also from individual, area-limited and more manageable, modular mine protection devices can be. With this partially segmented design, there are between the individual mine protection modules connecting and edge webs set, the whole or partly consist of perforated metal sheets or plastics. This through Bridges or similar arrangements of separate construction can alternatively in whole or in part The single or multi-layer structure 6 concern, but not all or even just a part of the remaining layers.

    From the diversity of the individual elements and the possible combinations offered by the invention has become an advantageous and due to blasting attempts practical layer structure according to Figure 12 highlighted. Such a mine protection device with a total height of 150 mm, for example, can be integrated Solution between the outer bottom plate 2, i.e. the debit side and the inner vehicle floor 4 to be arranged as the end of the crew compartment.

    A 40 mm thick first hard foam layer 3 with a density of 300 to 400 kg / m 3 is arranged behind the outer base plate 2 made of armored steel with a thickness of 8 mm. Above it is a 10 mm thick, dynamically pressure-resistant shatter protection plate 11.1, for example made of composite material or lignostone. This is followed by a first structural layer 6.1 composed of four cross-layered metawell panels (20 mm in total) made of aluminum and a second 10 mm thick rigid foam layer 10.1 with a density of 110 kg / m 3 . The subsequent second structural layer 6.2 likewise consists of four cross-glued, individual metawell panels (20 mm), and the third rigid foam panel (10 mm) 10.2 can have the same density as the rigid foam layer 10.1 arranged in front of it or a lower density, for example 50 to 80 kg / m 3 , have. The third structural layer (20 mm) 6.3 is identical to the previous one. The structure of the three structure layers 6.1, 6.2 and 6.3, which are the same in this example, can of course also be different in the sense of the preceding descriptions. The fourth hard foam layer (10 mm) 10.3 serves to decouple the last remainder of the possibly still arriving dynamic movement of the overall structure in connection with the dynamically pressure-resistant layer made of lignostone (10 mm) 11.2 from the inner wall 4 of the vehicle, ie the crew compartment. Therefore, this fourth rigid foam layer 10.3 should have the lowest possible density, for example only 30 to 50 kg / m 3 .

    Such a multilayer, integrated mine protection structure according to FIG. 12, in the dimensions 1.5 m × 1.5 m and with a basis weight of approximately 86 kg / m 2 , corresponding to a steel equivalent thickness of approximately 11 mm, was used with an explosive charge of 5 kg TNT blasted at a distance of 400 mm in a heavy mounting frame, the mass of which was roughly equivalent to a real battle tank weight of 50 to 60 tons.

    The test results showed a significant slowdown in the dynamic introduced Movement of the 8 mm thick armored steel plate 2 in connection with a strong one Reduction of dynamic deflection and plastic deformation. All Measured values were much better than those with the comparison blast and a pure one mass-equivalent armored steel plate of 19 mm thickness achieved measurement results. With the mine protection according to the invention according to Figure 12, but also with other arrangements in the sense of the previous descriptions, the Pressure surge can be distributed over a significantly larger area.

    All details shown in the figures and explained in the description are important for the invention. It is a feature of the invention that all described Details combined in one or more conceivable ways can be and thereby individually customized mine and splinter protection result.

    Claims (28)

    1. Mine protection device for land vehicles, aircraft or water-craft, consisting of the following multilayer structure, viewed from the load side:
      a) a first rigid foam layer (3) with a density of at least 100 kg/m3 and a thickness of at least 10 mm;
      b) a single- or multi-layer structural element plate (6) having a structure with plastic resilience and in each case thin defining layers (7, 8), between which undulating, angular and/or otherwise shaped intermediate plies or bodies (17, 18, 19, 23) are so connected that open, continuous channels (12) or extensive partial chambers arise between the respective defining layers;
      c) a second rigid foam layer (10), whose density is lower than the density of the first rigid foam layer and, behind or in front of the layer structure a) to c),
      d) a flexurally rigid plate (11),
      wherein, in the case of an integrated solution, the layer structure is arranged downstream of the floor and/or side panel (2) of the vehicle and, in the case of an adapted solution, the layer structure is arranged upstream of the floor and/or side panel (2) of the vehicle and, in the case of an adapted/integrated solution, parts of the layer structure are arranged both upstream and downstream of the floor and/or side panel (2) of the vehicle.
    2. A mine protection device according to claim 1,
      characterised in that
      layers a) to c) are arranged in repeated succession.
    3. A mine protection device according to claim 1,
      characterised in that
      layers b) and c) are arranged in repeated succession downstream of the layer a).
    4. A mine protection device according to claim 2 or claim 3,
      characterised in that
      further rigid foam layers arranged from the load side in the direction of the inside of the vehicle exhibit a density which reduces step-by-step relative to the first rigid foam layer (3).
    5. A mine protection device according to one of claims 1 to 4,
      characterised in that
      the structural element plate (6) is made from metallic materials.
    6. A mine protection device according to one of claims 1 to 4,
      characterised in that
      the structural element plate (6) is made from fibre composite material.
    7. A mine protection device according to one of claims 1 to 4,
      characterised in that
      the structural element plate (6) is made from fibre composite material and partially metallic materials.
    8. A mine protection device according to one of claims 1 to 7,
      characterised in that
      partial webs (15) of fibre composite material (CFRP, GFRP) and/or elastomers and/or metallic materials are arranged between the intermediate plies (9) of the structural element plate (6) and extend wholly or partially, at a particular angle, in particular perpendicularly to the direction of movement of the defining layers (7, 8).
    9. A mine protection device according to one of claims 1 to 7,
      characterised in that
      the intermediate plies (9) of the structural element plate (6) are formed wholly or partially as plastically deformable webs (16) of elastomers, fibre composite material (CFRP, GFRP) and/or metallic materials.
    10. A mine protection device according to one of claims 1 to 7,
      characterised in that
      the intermediate plies (9) of the structural element plate (6) are formed wholly or partially as elastically resilient webs (16) of fibre composite material (CFRP, GFRP), elastomers and/or metallic materials.
    11. A mine protection device according to claim 9 or claim 10,
      characterised in that
      the webs (16) are formed of perforated fibre composite material (CFRP, GFRP) and/or perforated metallic materials.
    12. A mine protection device according to one of claims 1 to 7,
      characterised in that
      the intermediate plies (9) of the structural element plate (6) are formed wholly or partially as frictional (17) and expanding elements (18) of fibre composite material (CFRP, GFRP), elastomers and/or metallic materials.
    13. A mine protection device according to one of claims 1 to 7,
      characterised in that
      the intermediate plies (9) of the structural element plate (6) are formed wholly or partially of slit, curved profiles (19) of fibre composite material (CFRP, GFRP), elastomers and/or metallic materials.
    14. A mine protection device according to one of claims 1 to 7,
      characterised in that
      the intermediate plies (9) of the structural element plate (6) are formed wholly or partially of double-sidedly active, strip-form frictional or upset elements (23), and in that the counterparts (21) are arranged in strip-form or consist of plates with corresponding grooves, wherein fibre composite material (CFRP, GFRP), elastomers and/or metallic materials are provided as the material for the elements (23) or counterparts (21).
    15. A mine protection device according to one of claims 1 to 7,
      characterised in that
      the intermediate plies (9) of the structural element plate (6) are formed wholly or partially of rotationally symmetrical, plastically deformable and/or elastically resilient friction and upset elements (17, 19, 23) or expanding elements (18) of fibre composite material (CFRP, GFRP), elastomers and/or metallic materials, which are arranged in regular or irregular distribution between the defining layers (7, 8).
    16. A mine protection device according to claim 15,
      characterised in that
      the counterparts of the plastically deformable and/or elastically resilient frictional and upset elements (17, 19, 23) are formed by perforated plates with round or square holes of fibre composite material (CFRP, GFRP) or metallic materials, in particular high-rigidity armour steel perforated plates.
    17. A mine protection device according to claim 14 or claim 15,
      characterised in that
      the double-sidedly active frictional and upset elements (23) are held by a flat element (22) similar to the ball guideway in ball bearings, which is made of fibre composite material (CFRP, GFRP) or thin-walled metallic material, especially of metals of high hardness and high extension.
    18. A mine protection device according to one of the preceding claims,
      characterised in that
      the structural element plate (6) is continuous or partially segmented.
    19. A mine protection device according to one of the preceding claims,
      characterised in that
      the connecting webs consist wholly or partially of perforated metallic sheets or plastics.
    20. A mine protection device according to one of the preceding claims,
      characterised in that
      wholly or partially geometrically corresponding shaped articles (13, 14) with damping and/or energy-absorbing properties are introduced into the spaces (12) in the structural element plate (6).
    21. A mine protection device according to one of the preceding claims,
      characterised in that,
      in addition, load-dependently deformable structural members (27) and/or closed hollow profile members (26) of metal or plastics are embedded in the structural element plate (6) or between the individual layers in the case of a multilayer arrangement.
    22. A mine protection device according to one of the preceding claims,
      characterised in that
      the open channels (12), extensive partial chambers or additional hollow profile members (26) are filled wholly or partially with liquid substances, deformable hollow members and/or elastically or plastically deformable materials or members, which, as desired, exhibit shock-absorbing and/or energy-absorbing properties.
    23. A mine protection device according to claim 22,
      characterised in that
      the liquids are fuels for the drive engine of the vehicle.
    24. A mine protection device according to one of the preceding claims,
      characterised in that
      the structural element plate (6) is constructed at least in part in such a way that fresh air and/or exhaust air for the drive engine of the vehicle may be aspirated or exhausted respectively thereby.
    25. A mine protection device according to one of the preceding claims,
      characterised in that
      the structural element plate (6) is constructed at least in part in such a way that it may be used as a heat exchanger.
    26. A mine protection device according to one of the preceding claims,
      characterised in that
      the flexurally rigid plate (11) is made of a splinter-proof material, preferably of ceramic composite material.
    27. A mine protection device according to one of the preceding claims,
      characterised in that
      it consists of various individual modules.
    28. A mine protection device according to one of the preceding claims,
      characterised in that
      the individual modules are of single- or multi-layer arrangement and secured relative to one another against impact.
    EP19980114601 1997-08-13 1998-08-04 Sandwich plate for protection from explosive mines Expired - Lifetime EP0897097B1 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    DE1997134950 DE19734950C2 (en) 1997-08-13 1997-08-13 Mine protection device
    DE19734950 1997-08-13

    Publications (3)

    Publication Number Publication Date
    EP0897097A2 EP0897097A2 (en) 1999-02-17
    EP0897097A3 EP0897097A3 (en) 2000-09-06
    EP0897097B1 true EP0897097B1 (en) 2004-05-26

    Family

    ID=7838769

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19980114601 Expired - Lifetime EP0897097B1 (en) 1997-08-13 1998-08-04 Sandwich plate for protection from explosive mines

    Country Status (4)

    Country Link
    EP (1) EP0897097B1 (en)
    AT (1) AT267998T (en)
    DE (1) DE19734950C2 (en)
    ES (1) ES2221100T3 (en)

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    CN104697404A (en) * 2015-03-10 2015-06-10 南京理工大学 Explosion shock wave protection device of motor vehicle
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    EP2569590B1 (en) 2010-11-05 2016-02-03 EC Technik GmbH Walking floor for an armored vehicle, armored vehicle having such a walking floor, and method for producing such a walking floor
    DE102014101865A1 (en) 2014-02-14 2015-08-20 Thomas Lange Protection module for the construction of armor
    CN104697404A (en) * 2015-03-10 2015-06-10 南京理工大学 Explosion shock wave protection device of motor vehicle

    Also Published As

    Publication number Publication date
    AT267998T (en) 2004-06-15
    EP0897097A2 (en) 1999-02-17
    DE19734950C2 (en) 1999-05-27
    ES2221100T3 (en) 2004-12-16
    EP0897097A3 (en) 2000-09-06
    DE19734950A1 (en) 1999-02-25

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