Multi-grade accordion type honeycomb structure

Abstract

The invention discloses a multi-grade accordion type honeycomb structure. The multi-grade accordion type honeycomb structure is formed in the manner that a plurality of two grades of representative cells are arranged in a cyclically staggered manner. Each representative cell at the first grade is of a wavy structure which is formed by stacking two identical rhombus structures in parallel in a staggered manner and has a certain wall thickness. Each representative cell at the second grade is of a corrugated sandwich structure and used for combining the two grades of representative cells, so thatthe multi-grade accordion type honeycomb structure can be obtained. According to the multi-grade accordion type honeycomb structure, external load is absorbed by means of the multi-grade deformationmanner, staged distribution of the load is conducted at the same time, so that the structure mass is remarkably lowered, meanwhile repeated bearing can be conducted; and in this way, the bearing capacity and energy efficiency of the multi-grade accordion type honeycomb structure are improved, and the lightweight design target is fully achieved. In addition, for different loading conditions and work environments, the side length, the flare angle, the wall thickness and other parameters of each cell can be adjusted, optimizing design is conducted on the multi-grade accordion type honeycomb structure, and the engineering application value of the structure is brought into full play.

Description

technical field [0001] The invention belongs to the field of lightweight structure design, and in particular relates to a multi-level accordion type honeycomb structure. Background technique [0002] The load-bearing performance of a structure and its own weight have always been a contradictory set of relationships in engineering. The stronger the load-bearing capacity, the heavier the structure. With the rapid development of modern society, how to greatly reduce the quality of structures while improving their load-bearing capacity has become a focus of attention in the fields of aerospace, civil engineering, marine ships, vehicle engineering, energy power, and national defense industries. In this context, human beings learn from nature and design and prepare a variety of lightweight porous structures from natural structures such as animal bones, bee nests, bird wings, and plant roots. It has excellent performance and good designability in terms of wave absorption, heat dis...

AI Technical Summary

Problems solved by technology

However, for the traditional corrugated sandwich structure, its bending resistance perpendicular to the corrugation direction is significantly greater than that parallel to the corrugation direction; the shear resistance parallel to the corrugation direction is significantly greater than the shear resistance perpendicular to the corrugation direction ability, and the ability to resist local buckling deformation and local collapse is low, so that the corrugated sandwich structure has obvious limitations in engineering applications

Images