A numerical analysis based on M-integral about the interaction of parallel surface cracks in an infinite plate

2018 ◽  
Vol 96 ◽  
pp. 370-379 ◽  
Author(s):  
Fei Lv ◽  
Chang-Yu Zhou ◽  
Rui-Jia Cheng ◽  
Xin-Ting Miao ◽  
Xiao-Hua He
Keyword(s):  
Numerical Analysis ◽  
Infinite Plate ◽  
Surface Cracks ◽  
Parallel Surface ◽  
M Integral

Growth Behavior of Two Interacting Surface Cracks of Dissimilar Size (Comparison for Tensile and Bending Load)

2010 ◽  
Author(s):  
Masayuki Kamaya ◽  
Masanori Kikuchi ◽  
Eiichi Miyokawa
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Growth Behavior ◽  
Multiple Cracks ◽  
Surface Cracks ◽  
Element Mesh ◽  
Loading Direction ◽  
Parallel Surface ◽  
Bending Load ◽  
The Difference

When multiple cracks approach one another, the stress intensity factor is likely to change due to the interaction of the stress field. This causes change in growth rate and shape of cracks. In particular, when cracks are in parallel position to the loading direction, the shape of cracks becomes non-planar. In this study, the complex growth of interacting cracks is evaluated by using the S-Version finite element method, in which local detailed finite element mesh (local mesh) is superposed on cores finite element model (global mesh) representing the global structure. In this study, two parallel surface cracks are subjected to two types of loading; tensile and bending load. Comparisons are made on the growth behavior under two types of loading. It is shown that the smaller crack stop growing due to the interaction when the difference in size of two cracks is large. This tendency is more significant for the bending load. The procedure for evaluating crack growth for Fitness-for-Service assessment is discussed.

1312 A prediction procedure for growth of two parallel surface cracks of dissimilar size

2009 ◽  
Vol 2009.22 (0) ◽  
pp. 601-602
Author(s):  
Masayuki Kamaya ◽  
Masanori Kikuchi ◽  
Eiichi Miyokawa
Keyword(s):  
Surface Cracks ◽  
Parallel Surface

1311 Fatigue Crack Growth Smulation of Parallel Surface Cracks

2009 ◽  
Vol 2009.22 (0) ◽  
pp. 599-600
Author(s):  
Masanori Kikuchi ◽  
Maitireyimu Maigefeireti ◽  
Hirotaka Sano
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Surface Cracks ◽  
Parallel Surface
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