Numerical analysis of splice-type crack arrester with a filler under mode-I type loading

被引：2
作者：
Hirose, Yasuo [1 ]
Matsuda, Hirokazu [2 ]
Matsubara, Go [2 ]
Hojo, Masaki [3 ]
Yoshida, Keishiro [1 ]
Inamura, Fumihide [2 ]
机构：
[1] Kanazawa Inst Technol, Dept Aeronaut, Coll Engn, Nonoichi, Ishikawa 9218501, Japan
[2] Kawasaki Heavy Ind Co Ltd, Strength Res Dept, Tech Inst, Akashi, Hyogo 6738666, Japan
[3] Kyoto Univ, Dept Mech Engn & Sci, Sakyo Ku, Kyoto 6068501, Japan
来源：
COMPOSITE STRUCTURES | 2013年 / 100卷
关键词：
Foams; Damage tolerance; Delamination; Finite element analysis (FEA); CORE SANDWICH PANEL; PEEL-STOPPER; INTERFACIAL FRACTURE; COMPOSITE; FATIGUE; BEAMS; SUPPRESSION; DEFLECTION; STRENGTH; KINKING;
D O I：
10.1016/j.compstruct.2012.12.045
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A new type of crack arrester with a configuration suitable for an airframe structure was numerically evaluated for use in the splice of a foam core sandwich panel to suppress interfacial crack growth and to enhance the structural integrity of the foam core sandwich panel. A tapered butt joint configuration was selected for the core-core splice. Carbon fiber reinforced plastic (CFRP) prepreg was installed as the crack arrester between the cores and the tapered core edge, where the foam core material was removed and replaced with CFRP prepreg. This type of arrester is named a splice-type crack arrester with a filler. The decrease in the energy release rate at the crack tip owing to this type of arrester was analytically confirmed by finite element (FE) analysis and crack closure integrals. A quantitative estimation of the crack suppression effect revealed that a tapered core edge with higher stiffness had a strong effect on crack suppression. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：127 / 134
页数：8
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