Influence of crack arresting rib on the fracture characteristic of integral wing-spar

DOI

10.2991/icimm-15.2015.272How to use a DOI?

Keywords

Crack arresting rib; Integral wing- spar; Fracture characteristic; Stress intensity factor.

Abstract

Focus on the problem that fracture characteristic of integral structure is worse than composite structure, this paper studied the influence of anti-crack rib design parameters on the fracture characteristic of integral wing-spar through calculating the stress intensity factor and constructing support vector machine agent model. Results indicated that crack arresting rib could enhance the fracture characteristic of integral wing-spar well. When crack extended to crack arresting rib, residual strength of integral wing-spar will enhance for about 36%, crack growth life enhance about 13.5%; the best location of crack arresting rib is at 1/3 the height of wing-spar. Conclusions gained could provide reference for damage tolerance design of integral wing-spar.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Junjie Yin
AU  - Shulin Li
AU  - Fei Chang
AU  - Xiaopeng Shi
PY  - 2015/07
DA  - 2015/07
TI  - Influence of crack arresting rib on the fracture characteristic of integral wing-spar
BT  - Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 1492
EP  - 1498
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-15.2015.272
DO  - 10.2991/icimm-15.2015.272
ID  - Yin2015/07
ER  -