Research on Analysis of Structure Strength in Landing Cushion Process for Airborne Vehicle

doi:10.3969/j.issn.1000-1093.2012.12.004

Abstract

Abstract: A finite element model of hull and airbags for landing cushion process was established to research structure strength in landing cushion process of airborne vehicle based on finite element method. On this base, the maximal acceleration results of simulation were given under two conditions and compared to the results of airdrop tests. The simulation results can reproduce the landing cushion process of airborne vehicle exactly.The impact acceleration of hull satisfies requirement of landing cushion process. The stress distribution in normal airdrop condition and worse airdrop condition were obtained through simulation. The results show that the maximal Von Mises stress values of hull don’t exceed tensile strength of the material, and the structure strength fulfils design requirements.

Key words: other disciplines of mechanical engineering, airborne vehicle, cushion airbag, landing cushion process, finite element, contact, structure strength

CLC Number:

TJ811⁺.91

HOU Dian-hui, WANG Hong-yan, HAO Gui-xiang. Research on Analysis of Structure Strength in Landing Cushion Process for Airborne Vehicle[J]. Acta Armamentarii, 2012, 33(12): 1430-1435.

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