High-bearing composite material parting tooth connecting device based on soft substance

Abstract

The invention discloses a high-bearing composite material parting tooth connecting device based on a soft substance. The device is characterized in that a composite material plate is plate-shaped, and composite material parting teeth are arranged on the upper side surface, or the lower side surface, or the upper surface and the lower side surface of the two ends of the composite material plate; the upper side face and the lower side face of the two ends of the composite material plate are connected with metal plates correspondingly, metal teeth in corresponding forms are arranged on the connecting faces of the metal plates, and after the metal teeth and the composite material parting teeth are attached, a certain gap is reserved between the metal teeth and the composite material parting teeth and filled with soft materials; and a certain pre-tightening force is applied between the composite material plate and the metal plates. Therefore, according to the high-bearing composite material parting tooth connecting device based on the soft substance, metal connecting pieces and a composite material are connected, and a joint has high bearing capacity and good fatigue resistance through application of the soft substance, the parting teeth and pre-tightening force; and the load borne by the teeth in a first path is effectively distributed to the teeth in later paths through application of the soft substance, so that loads on the composite material teeth are evenly distributed, and the problem that the stress of the teeth in the first path is maximum in connection of the composite material teeth is solved.

Description

technical field [0001] The invention belongs to the technical field of high-performance fiber-reinforced composite material connection, and specifically relates to a high-load-bearing composite material parting tooth connection device based on soft matter, which aims to improve the bearing capacity of the existing composite material connection technology and reduce the weight of the composite material connection. . Background technique [0002] Lightweight is an eternal pursuit in civil engineering, aerospace and defense equipment and other fields. With the advancement of my country's manned spaceflight, large rocket and other major projects and the localization of high-elastic carbon fibers such as M55 and M60, the demand for the development of high-load and ultra-lightweight composite defense equipment using domestic high-elastic carbon fibers is becoming more and more urgent. However, compared with ordinary carbon fibers, these high-performance carbon fibers have lower e...

AI Technical Summary

Problems solved by technology

However, since the composite material is an elastic and brittle material, the composite tooth connection and the traditional bolt connection cannot distribute the force evenly to each tooth or bolt in the joint, resulting in the stress on the first tooth or the first row of bolts in the joint. If it is too large, the joint will fail when the rear teeth and bolts do not fully exert their bearing capacity

Therefore, the existing composite material connection device cannot fundamentally solve the problem of uneven force transmission in composite material connection technology

[0005] After millions of years of evolution, nature has shaped many highly optimized structural forms, which usually have excellent toughness, strength, damage resistance and damage tolerance. These properties have so far been difficult to achieve in composite materials. implemented in the structure

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