含多裂纹结构的概率损伤容限评定方法

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1995, Vol. 16 ›› Issue (2): 10-15.

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PROBABILITY DAMAGE TOLERANCE EVALUATION METHOD FOR MULTI-CRACKED STRUCTURE

Fei Binjun, Tong Mingbo, Liu Wenting

Beijing University of Aeronautics and Astronautics,Beijing,100083

Received:1994-06-04 Revised:1994-08-10 Online:1995-04-25 Published:1995-04-25

Abstract

Abstract: Using the probability fracture machanics,a new full-life probability damage tolerance evaluation model is established for multi-cracked structures,which considers the randomness of initial crack length and its propagation.Also established is a reliability model for multi-cracked structures.The above models,are applied to one aircraft wing mainbeam to determine the safe reliability under given fatigue crack growth life or the safe fatigue crack growth life under given reliability.

Key words: probabilit, fracture mechanics, damage tolerance

CLC Number:

Fei Binjun;Tong Mingbo;Liu Wenting. PROBABILITY DAMAGE TOLERANCE EVALUATION METHOD FOR MULTI-CRACKED STRUCTURE[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1995, 16(2): 10-15.

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PROBABILITY DAMAGE TOLERANCE EVALUATION METHOD FOR MULTI-CRACKED STRUCTURE

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