Finite element analysis of the influence of crack tip stress distribution on fatigue crack propagation rate of 5XXX aluminum alloy - 文章详情页

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EI Scopus

摘要：

5XXX　aircraft　skin　aluminum　alloy　needs　relatively　high　fatigue　performance　to　sustain　complex　pneumatic　loading　in　service.　Stress　intensity　factors　are　important　parameters　to　compute　fatigue　crack　propagation　rate.　XFEM　was　used　to　calculate　the　crack　tip　stress,　as　well　as　stress　intensity　factors　(SIF)　and　fatigue　crack　propagation　rate　on　the　5E62　alloy.　Simulation　results　showed　that　the　values　of　SIF　calculated　by　XFEM　were　quite　close　to　the　theoretical　values.　Both　the　values　of　crack　tip　stress　and　SIF　increase　as　crack　length　increasing　in　Paris　region,　resulting　the　increasing　of　fatigue　crack　growth　rate.　Fatigue　crack　propagation　rate　calculated　by　XFEM　are　consistent　with　the　theoretical　values　and　experimental　values　in　Paris　region.　©　(2015)　Trans　Tech　Publications,　Switzerland.

关键词：

Aluminum alloys Growth rate Finite element method Stress intensity factors Fatigue of materials Fatigue crack propagation Crack tips Stress concentration

作者机构：

[ 1 ] [Liu, Jia Ju]College of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing; 100124, China
[ 2 ] [Huang, Hui]College of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing; 100124, China
[ 3 ] [Liu, Ran]College of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing; 100124, China
[ 4 ] [Rong, Li]College of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing; 100124, China
[ 5 ] [Wang, Wei]College of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing; 100124, China
[ 6 ] [Nie, Zuo Ren]College of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing; 100124, China

通讯作者信息：

黄晖
[huang, hui]college of materials science and engineering, beijing university of technology, 100 ping le yuan, chaoyang district, beijing; 100124, china

电子邮件地址：

huanghui@bjut.edu.cn

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