用于飞机结构选材的系列材料性能指标及其应用

doi:10.7527/S1000-6893.2015.0291

Abstract

Abstract:

In order to improve the rationality of materials selection for aircraft structure, considering from the viewpoint of material property indices, concepts and calculation methods of specific fatigue strength, specific static toughness, specific dynamic toughness, fatigue static strength ratio, toughness static strength ratio and toughness fatigue strength ratio are put forward apart from the common parameters of the specific static strength and the specific stiffness. A materials selection method based on the series of material property indices is established. This method firstly narrows the possible materials usable in design by considering the design criteria and actual in-service requirements, then ranks the candidates according to the series of material property indices and chooses the final material through structural validation. Finally, a material selection process for an aircraft wing spar is given as an example.

Key words: aircraft structure, material selection for an structure, specific fatigue strength, specific static toughness, specific dynamic toughness, fatigue static strength ratio, toughness static strength ratio, toughness fatigue strength ratio

CLC Number:

V222
V250.3

ZHANG Teng, HE Yuting, TAN Shen'gang, WANG Xinbo, ZHANG Sheng. Series of material property indices and their application to materials selection for aircraft structure[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(10): 3170-3177.

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Series of material property indices and their application to materials selection for aircraft structure

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