CN109454951A

CN109454951A - A kind of bidirectional crossed ripple sandwich

Info

Publication number: CN109454951A
Application number: CN201811444482.4A
Authority: CN
Inventors: 李会民; 葛磊; 刘宝生; 周磊; 苏浩然; 冯天怡; 方岱宁
Original assignee: Beijing Institute of Technology BIT
Current assignee: Beijing Institute of Technology BIT
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2019-03-12

Abstract

The invention discloses a bidirectional cross-corrugated sandwich structure. The sandwich structure is composed of an upper panel, a lower panel and a core body. The front and back surfaces of the core body are provided with pits arranged according to the law of rows and columns. The center line of the pit takes the thickness section of the core body. The core body after cutting is rectangular as a whole, and the adjacent sides of the core body have two identical and continuous corrugated structures. Crests or troughs; upper and lower panels are fixed to the upper and lower surfaces of the core, respectively. The invention can remarkably improve the mechanical properties of the sandwich structure such as transverse and shear resistance.

Description

A kind of bidirectional crossed ripple sandwich

Technical field

The present invention relates to a kind of bidirectional crossed ripple sandwich, which can be used as structural member and navigates applied to aviation It, vehicle, naval vessel field, also can be used as panel application in building field.

Background technique

Multi-functional composite construction has the series of advantages such as high specific strength and specific modulus, designability, has obtained more next More extensive concern and application are related to national defence, military affairs, vehicle, naval vessel, submarine, building, bridge etc..Ripple sandwich is made It for a kind of compound structure for new residence form, is made of two pieces of upper and lower panels and intermediate ripple laminboard layer, material used in core Ripple struction form is geometrically being presented in material.The panel and laminboard layer of ripple sandwich can be by bonding agent or welding etc. even The mode of connecing links together, and can also pass through other technological formings.Ripple sandwich improves cross sectional moment of inertia by core, To reach ideal structural mechanical property.Traditional ripple sandwich generally has the core of unidirectional corrugated form, face Interior mechanics performance has certain directionality, has the mechanical property in a direction weak, and causing the structure to be applied has limitation, it is difficult to It adapts to the higher engineering application requirement of mechanical property requirements.

Summary of the invention

In view of this, the sandwich core is two-way company the present invention provides a kind of bidirectional crossed ripple sandwich Continue the intersection of ripple and partially overlap, is remarkably improved the mechanical properties such as transverse direction and the shearing resistance of sandwich structure.

A kind of bidirectional crossed ripple sandwich, the sandwich are made of top panel, lower panel and core, the core Positive and negative surface all have according to ranks rule arrange pit, the center line of pit takes thickness to core along the ranks of edge Section, core adjacent side are that both direction is identical and continuous ripple struction, the ripples of two sides joint simultaneously In wave crest or trough；Top panel and lower panel are separately fixed at the upper and lower surface of core.

Further, the material of the top panel, lower panel and core does not select simultaneously or simultaneously homogeneous material or compound Material.

Further, the top panel, lower panel and core with a thickness of equal thickness.

Further, the top panel, lower panel and core with a thickness of not equal thickness.

Further, the corrugated cross-section shape of the core is trapezoidal or rectangle.

Further, the ripple angle of two sides of the core can be 10⁰~90 °.

Further, the bidirectional crossed ripple sandwich is made of integrally formed or multiple moulding process.

Further, the bidirectional crossed ripple sandwich is slab construction or curved-surface structure.

The utility model has the advantages that

Bidirectional crossed ripple struction is presented in core of the invention in face, has the mechanical property significantly increased.Due to it Have many advantages, such as high specific strength, specific modulus, designability, can be widely applied to the civil fields such as vehicle, building, can also be applied to The military uses such as aerospace, submarine naval vessel.

Detailed description of the invention

Fig. 1 is the bidirectional crossed ripple sandwich perspective view of the explosion of the present invention

Fig. 2 is the bidirectional crossed ripple sandwich oblique view of the present invention

Fig. 3 is the bidirectional crossed ripple sandwich oblique view of the present invention

Fig. 4 is the sandwich layer front view of the bidirectional crossed ripple sandwich of the present invention

Fig. 5 is the sandwich layer dorsal view of the bidirectional crossed ripple sandwich of the present invention

Wherein, 1- top panel, 2- core, 3- lower panel.

Specific embodiment

The present invention will now be described in detail with reference to the accompanying drawings and examples.

As shown in figure 1 and 2, the present invention provides a kind of bidirectional crossed ripple sandwich, the sandwich is by above Plate 1, lower panel 3 and core 2 form；

As shown in attached drawing 3,4 and 5, the positive and negative surface of core 2 all has the pit arranged according to ranks rule, and pit is ladder Shape, the bottom surface of trapezoidal pit are trapezoidal short side, and the top of trapezoidal pit is trapezoidal long side；Along edge, ranks upper trapezoid is recessed The center line in hole takes thickness x cross sectional to core, and the whole core 2 after interception is in rectangle, and 2 adjacent side of core is that both direction is complete Exactly the same and continuous trapezoidal ripple struction, the trapezoidal ripple of two sides are in the wave crest or wave of trapezoidal ripple in joint simultaneously Paddy；Top panel 1 and lower panel 3 are separately fixed at the upper and lower surface of core 2.

The material of top panel 1, lower panel 3 and core 2 is the isotropic materials such as stainless steel, ABS resin.

The corrugated cross-section of core 2 is the shapes such as rectangle, the ripple angle in the 2 face direction Nei Liang of core can be 90 ° or its Its angle.

The thickness of top panel 1, lower panel 3 and core 2 can be equal thickness, be also possible to not equal thickness.

Core 2 and top panel 1 and lower panel 3 can be integrated molding, be also possible to the connection types connection such as welding, splicing It forms.

The bidirectional crossed corrugated surface is plane or curved-surface structure.

In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention. All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims

1. a two-way cross-corrugated sandwich structure, the sandwich structure is made up of an upper panel, a lower panel and a core body, it is characterized in that, the front and back surfaces of the core body all have pits arranged according to the law of ranks, along the edge. The center line of the pit on the row and column takes the thickness section of the core body, the adjacent sides of the core body are corrugated structures with the same two directions and continuous, and the corrugations on both sides are at the crest or trough at the same time at the junction; the upper panel and The lower panels are respectively fixed on the upper and lower surfaces of the core body.

2 . The bidirectional cross-corrugated sandwich structure according to claim 1 , wherein the materials of the upper panel, the lower panel and the core are selected from homogeneous materials or composite materials at the same time or at different times. 3 .

3 . The bidirectional cross-corrugated sandwich structure according to claim 1 or 2 , wherein the thicknesses of the upper panel, the lower panel and the core are equal thicknesses. 4 .

4 . The bidirectional cross-corrugated sandwich structure according to claim 1 or 2 , wherein the thicknesses of the upper panel, the lower panel and the core body are unequal thicknesses. 5 .

5 . The bidirectional cross-corrugated sandwich structure according to claim 1 , wherein the corrugated cross-sectional shape of the core body is trapezoidal or rectangular. 6 .

6 . The bidirectional cross-corrugated sandwich structure according to claim 5 , wherein the included angle of the adjacent side corrugations of the core body is 10°˜90°. 7 .

7 . The bidirectional cross corrugated sandwich structure according to claim 5 or 6 , wherein the bidirectional cross corrugated sandwich structure is made by integral molding or multiple molding processes. 8 .

8 . The bidirectional cross corrugated sandwich structure according to claim 7 , wherein the bidirectional cross corrugated sandwich structure is a flat plate structure or a curved surface structure. 9 .