Combined Shakedown- and Crack Propagation-Analysis of Elastic-Plastic Structures

1989 ◽  
pp. 531-534
Author(s):  
D. Weichert
Keyword(s):  
Crack Propagation ◽  
Elastic Plastic ◽  
Propagation Analysis

Crack Propagation Analysis of Statically Indeterminate Beam by Elastic-Plastic Fracture Mechanics

2002 ◽  
Vol 18 (3) ◽  
pp. 119-126
Author(s):  
Sung-Po Liu ◽  
C. J. Shih ◽  
Liang-Yu Kuo
Keyword(s):  
Fracture Mechanics ◽  
Crack Propagation ◽  
Plastic Hinge ◽  
Linear Displacement ◽  
Plastic Collapse ◽  
Rotational Angle ◽  
Elastic Plastic ◽  
Rectangular Beam ◽  
Propagation Analysis ◽  
Leak Before Break

AbstractThis paper develops an analytical model for the plastic collapse of a statically indeterminate rectangular beam containing a crack. Limit analysis, elastic-plastic fracture mechanics, compliance and J-integral concepts are used to study JIC and dJ/da that influence the crack propagation. The relations among the plastic hinge, applied load, linear displacement, rotational angle and crack growth leads to a better understanding of the problem as a consequence of this study. The conclusions are: (1) Unstable ductile fracture occurs at the crack propagates before plastic collapse or at dJ/da is smaller than the minimum critical value. (2) LBB (leak-before-break) characteristic of the statically indeterminate rectangular beam is valid if the crack propagates before plastic collapse.

Fatigue crack propagation analysis for multiple weld toe cracks in cut-out fatigue test specimens from a girth welded pipe

2017 ◽  
Vol 94 ◽  
pp. 158-165 ◽  
Author(s):  
John H.L. Pang ◽  
Hsin Jen Hoh ◽  
Kin Shun Tsang ◽  
Jason Low ◽  
Shawn Caleb Kong ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Test ◽  
Fatigue Crack Propagation ◽  
Propagation Analysis ◽  
Weld Toe ◽  
Welded Pipe
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