微爆索切割航空有机玻璃的研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2006, Vol. 27 ›› Issue (1): 152-156.

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Study on Micro-Detonation Chord Cutting of Aviation Polymethyl Methacrylate

YAO Xiao-hu¹, HAN Qiang¹, LIU Xiao-ming², HUANG Xiao-qing¹, ZHAO Long-mao³

1. Department of Mechanics and Bridge Engineering, College of Traffic and Communication,South China University of Technology, Guangzhou 510640, China;2. Technology Center, Chengdu Aircraft Company, Chengdu 610092, China;3. Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, China

Received:2004-10-18 Revised:2005-03-11 Online:2006-02-25 Published:2006-02-25

Abstract

Abstract: In order to improve the present aviation ejection lifesaving system, the application of micro-detonation chord (MDC) in aviation ejection lifesaving system is proposed. A serials of MDC which have different parameters are designed. According to cutting test study of Polymethyl Methacrylate (PMMA), the phenomenon of spallation in PMMA due to MDC cutting is observed. The effects of different parameters of MDC on the damage depth and influence area are obtained. Accordingly the appropriate kinds of materials of half-circular covers, detonator and the range of charge are determined. The numerical simulation on MDC cutting of PMMA is carried out using 3-D explicit element code LS-DYNA3D. The calculation results accords with the experimental data. The relationship between the charge quantity of MDC and the penetration depth of PMMA are obtained. The powerful foundation is supplied for the design of the aviation ejection lifesaving system.

Key words: MDC cutting, PMMA, spallation, experimental study, numerical simulation

CLC Number:

V254.1

YAO Xiao-hu;HAN Qiang;LIU Xiao-ming;HUANG Xiao-qing;ZHAO Long-mao. Study on Micro-Detonation Chord Cutting of Aviation Polymethyl Methacrylate[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2006, 27(1): 152-156.

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Study on Micro-Detonation Chord Cutting of Aviation Polymethyl Methacrylate

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