RU151699U1 - MULTI-LAYER PANEL FILLER - Google Patents

Abstract

A truss filler of a multilayer panel made in the form of a three-dimensional structure of repeating pyramidal or tetrahedral cells having a common vertex with each of the neighboring ones, with ribs made of zigzag rod elements, and casing, characterized in that on each vertex and base of the pyramidal or tetrahedral cells spikes are located, and on the skin in the mating part there are holes for the size and configuration of the spikes, moreover, on some repeating edges of the pyramidal or tetrahedral rod elements spikes are made on the tops and ends, on the other without spikes, on the tops and ends, on the third spikes are made only on the ends, and on the fourth spikes are made only on the tops of the rods, while the edges of the rod elements are located and directed at given angles to the base to ensure the necessary rigidity of the structure, and in the hollows of the zigzag rod elements at the vertices and bases, slots are made for connecting with the ribs of the zigzag rod elements into a single truss span design rer.

Description

The utility model relates to multilayer structures with fillers in the form of repeating pyramidal and tetrahedral structures and can be used in the manufacture of multilayer panels of various materials, such as metals, ceramics, glass, polymers, composites, semiconductors, which work under resistance to external pressure and compressive forces used in aircraft, shipbuilding, engineering, construction and other industries.

The effectiveness of three-layer structures for various types of loading is largely determined by the geometric and mechanical characteristics of the aggregate used, and the search for new aggregate structures is natural.

The well-known "Truss aggregate and method of its manufacture", including cladding, truss aggregate, in the form of pyramidal cells formed by connecting repeating pyramidal cells and two skins, (US patent No. 6.644.535 B2, publ. 11.11.2003, IPC B21D 39/00 ; B23K 1/20; B23K 31/00; B32B 5/12; B32B 7/00).

The disadvantage of this panel is the complexity of the design and the lack of strength when connected to the casing, as well as the complexity of the technological equipment for installing the casing on the truss aggregate.

The closest in technical essence to be taken as a prototype is the invention “Multifunctional honeycomb core and a method for its manufacture”, including two skins and repeating volumetric cells made of core elements. Aggregates can be made of various materials (metals, ceramics, glass, polymers, composites, semiconductors) and have different cross sections (square, circle, rectangle). (US patent No. 2011/7963085 B2, publ. 06/21/2011, IPC 52 / 782.1,52 / 652.1,633)

The disadvantage of this invention is the inability to produce accurate bonding at the contact points of the rods with the casing, which reduces the quality of the connection, and therefore reduces the strength of the aggregate.

The solved problem of the proposed utility model is to increase the strength of the truss aggregate due to design features that allow for simple and high-quality joining of skins.

The technical result from the use of the proposed utility model is the creation of a reliable and durable truss aggregate due to the simple and high-quality connection of skins.

The technical result is achieved by the fact that in the truss filler of the multilayer panel, which is a three-dimensional structure in the form of repeating pyramidal or tetrahedral cells having a common vertex with each of the neighboring ones, with ribs made of zigzag rod elements, sheathing, at each vertex and base of the pyramidal or tetrahedral spikes are located in the cells, and holes for the dimensions and configuration of the spikes are located on the skin in the mating part, moreover, on some repeating ribs of the rod elements ramide or tetrahedral cells, the spikes are made at the vertices and ends, at the other without spikes, at the vertices and ends, at the third - spikes are made only at the ends, at the fourth - spikes are made only at the tops of the rods, while the edges of the rod elements are located and directed at predetermined angles to the base to provide the necessary structural rigidity, and in the hollows of the zigzag rod elements at the vertices and at the base of the cells, slots are made to connect the edges of the zigzag rod elements into a single construction.

To clarify the technical nature, consider the drawings, which depict:

in FIG. 1 - presents zigzag rod elements;

in FIG. 2 - lining with holes;

in FIG. 3 - truss filler in the form of pyramidal cells;

in FIG. 4 - truss filler in the form of tetrahedral cells;

in FIG. 5 - truss filler in the form of tetrahedral cells with upper and lower casing;

in FIG. 6 - truss filler in the form of pyramidal cells with upper and lower casings,

where: 1 - zigzag rod elements with spikes on the tops and ends; 2 - zigzag rod elements without spikes; 3 - zigzag rod elements with spikes at the ends and without spikes at the tops; 4 - hollows of zigzag rod elements at the tops and at the bases; 5 - cuts in the hollows at the peaks and at the bases; 6 - a core element with a spike on its top, 7 - holes in the casing for the size and configuration of the spikes.

Truss aggregate construction production:

The material web is cut into four types of repeating ribs of zigzag rod elements (Fig. 1), which are located and directed at predetermined angles, providing the necessary strength and rigidity, when, in the first case, they are cut into repeating zigzag rod elements with spikes at the tops and ends 1 when they are cut into repeating zigzag rod elements without spikes 2 (Fig. 1), when they are cut into repeating zigzag rod elements without spikes at the tops and with spikes at the ends 3 (Fig. 1), to where they are cut into repeating zigzag rod elements with spikes at its vertices 6 (Fig. 1), in this case, in the hollows at the vertices and at the bases of the zigzag rod elements, slots 5 are made (Fig. 1), while the response slots are made according to the dimensions and the configuration of the spikes 7 (Fig. 2), for precise connection with the cells, in a single design, and by connecting 1, 2, 3 (Fig. 1) the stubble elements receive pyramidal cells by connecting 3, 6 (Fig. 1) receive tetrahedral cells of the filler, so that the slots of the troughs of the zigzag rod elements coincide with each other, after which the resulting cells are connected by skin (Fig. 5, 6), for this, the spikes located on the tops and ends of each of the rods are inserted into the response holes under the dimensions and configuration of the spikes and the contact points, they are welded or glued for a strong connection, increasing the strength and reliability of the truss filler.

Compared with the known analogues, the inventive truss filler, made in the form of repeating pyramidal or tetrahedral cells having one common vertex with each of the neighboring, allows to increase the longitudinal and transverse stiffness while reducing its mass per unit dyne, as well as to increase the reliability and strength of the proposed structures due to the implementation of spikes on repeating pyramidal or tetrahedral cells at the vertices and ends and with mating holes on the skin for the configuration of the spikes, and rod members mounted at predetermined angles to their bases, providing strength, and the slits in the depressions at tops and bottoms of cells, for rigid connection with the ribs into a unitary structure, generally improving reliability truss filler sandwich panel.

Claims (1)

A truss filler of a multilayer panel made in the form of a three-dimensional structure of repeating pyramidal or tetrahedral cells having a common vertex with each of the neighboring ones, with ribs made of zigzag rod elements, and casing, characterized in that on each vertex and base of the pyramidal or tetrahedral cells spikes are located, and on the skin in the mating part there are holes for the size and configuration of the spikes, moreover, on some repeating edges of the pyramidal or tetrahedral rod elements spikes are made on the tops and ends, on the other without spikes, on the tops and ends, on the third spikes are made only on the ends, and on the fourth spikes are made only on the tops of the rods, while the edges of the rod elements are located and directed at given angles to the base to ensure the necessary rigidity of the structure, and in the hollows of the zigzag rod elements at the vertices and bases, slots are made for connecting with the ribs of the zigzag rod elements into a single truss span design rer.

Images