Analog calculating method for landing buffering process of equipment air drop

Abstract

The invention relates to the technical field of simulation evaluation of an air drop technology, in particular to an analog calculating method for the landing buffering process of the equipment air drop. The analog calculating method comprises the following three implementing steps of: establishing a finite element model of an equipment-airbag system by a computer; carrying out analog calculation on the landing buffering process of the equipment air drop on the basis of a nonlinear finite element; and generating an analog result of the landing buffering process of the equipment air drop. The analog calculating method implements the simulation on the landing buffering process of the equipment air drop on the basis of a nonlinear finite element method and also acquires a simulation calculation method for the airbag buffering characteristic of the equipment-airbag system and the equipment impact response characteristic, provides an effective measure for the demonstration, design and development work of air drop equipment, and solves the problems of high risk, high cost and long period of the equipment air drop test.

Description

technical field [0001] The invention relates to the technical field of airdrop technology simulation evaluation, in particular to a simulation calculation method for equipment airdrop landing buffer process. Background technique [0002] If the equipment directly touches the ground when it lands after parachuting, the instantaneous impact overload will damage the mechanical structure and internal equipment of the equipment. Therefore, a part of the impact energy needs to be absorbed by the energy absorbing device. The widely used energy absorbing devices mainly include compressible materials, braking rockets and airbag cushioning systems. Compared with other energy absorbing devices, the airbag cushioning system has the advantages of simple structure, convenient use, good cushioning effect and low cost. The airbag cushioning system mainly absorbs most of the impact energy during landing through the cushioning of the airbag, reducing the impact on the equipment at the momen...

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Problems solved by technology

[0007] The object of the present invention is to provide the simulation calculation method of equipment airdrop landing buffering process for the deficiencies in the prior art, this simulation calculation method has realized the simulation of equipment airdrop landing buffering process based on the nonlinear finite element method, and obtains equipment-airbag system at the same time The simulation calculation method of airbag cushioning characteristics and equipment shock response characteristics provides an effective means for the demonstration, design and development of airdrop equipment, and solves the problems of high risk, high cost and long period of equipment airdrop testing

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