A multi-directional self-locking energy-absorbing system with a bamboo-shaped thin-walled tube structure that is easy to assemble

Abstract

The invention discloses a multi-directional self-locking energy-absorbing system with a bamboo-shaped thin-walled tube structure, which is easy to assemble. The bamboo-shaped thin-walled tube structure is made of metal materials. The combined structure is composed of several bamboo-like thin-walled tubes. Composed of stacks, the cross-section of each bamboo-like thin-walled tube structure along the axial direction is a circle whose size changes periodically. The present invention is designed by imitating the special shape and structure of Buddha belly bamboo, and realizes the self-locking between the bamboo-shaped sub-structures in the impact process of multiple directions in space, and overcomes the traditional energy-absorbing system that requires external installation of restraint devices or in- The defect of the internal processing connection device greatly reduces the time cost and manpower and material cost of disassembly and assembly, and also overcomes the deficiency that the dumbbell-shaped thin-walled tube structure can only cope with the impact of a specific single direction and maintain self-locking, and uses the self-locking effect to convert the impact energy It is the plastic dissipation and friction dissipation of the structure, which can not only absorb the impact energy efficiently, but also reduce the rebound effect of the impact object. According to the impact energy and the actual situation of the site, the number of stacked layers of the composite structure and the number of bamboo-shaped thin-walled tube sub-structures placed on each layer can be freely adjusted, and the placement direction of the bamboo-shaped thin-walled tube composite structure can be changed. High flexibility can improve the utilization rate of materials.

Description

technical field [0001] The present invention relates to the technical field of impact-resistant energy-absorbing systems, in particular to a multi-directional self-locking energy-absorbing system with a bamboo-shaped thin-walled tube structure that is easy to assemble. The energy-absorbing system is suitable for impact-resistant and shock-absorbing protection of road traffic, spacecraft Impact energy absorption protection for recycling and airdropped items, or anti-shock energy absorption fields such as anti-explosion impact protection for national defense and military. Background technique [0002] With the progress of economy and the development of science and technology, transportation vehicles such as airplanes, high-speed rails, and vehicles are all developing in the direction of light weight and speed, which greatly facilitates people's lives, but also increases the risk of accidents such as collisions, impacts, and explosions. Risks and Hazards. The impact accident o...

AI Technical Summary

Problems solved by technology

[0004] However, in the absence of inter-pipe connection and boundary constraints, the circular pipe system is prone to generate lateral splash under impact load, which not only reduces the energy absorption efficiency, but also may cause secondary damage

In engineering, the method of welding or bolting the round pipes, or installing a fixed baffle on the outer boundary of the round pipe system is usually used to overcome this defect, but these two methods increase the time cost and cost of installation to varying degrees. The cost of manpower and material resources reduces the timely response ability of the circular pipe system to deal with sudden impact accidents, especially in emergency rescue and other situations, which is not ideal

In order to make up for the shortcomings of the circular tube system, a self-locking structure of dumbbell-shaped thin-walled tubes was proposed before. This system can be formed by staggered arrangement of dumbbell-shaped thin-walled tubes, without the need for external installation of restraint devices or internal processing of connection devices. The system can only respond to the impact of a specific single direction in space and maintain self-locking

Images