scholarly journals Line Spring Model and Its Applications to Part-Through Crack Problems in Plates and Shells

2009 ◽  
pp. 125-125-28
Author(s):  
F Erdogan ◽  
B Aksel
Keyword(s):  
Spring Model ◽  
Crack Problems ◽  
Line Spring Model ◽  
Plates And Shells

Studies of the Line-Spring Model for Nonlinear Crack Problems

1985 ◽  
Vol 107 (4) ◽  
pp. 412-420 ◽  
Author(s):  
V. Kumar ◽  
M. D. German
Keyword(s):  
Finite Element ◽  
Deformation Theory ◽  
Crack Tip ◽  
Surface Cracks ◽  
Spring Model ◽  
Crack Problems ◽  
Line Spring Model ◽  
Nonlinear Crack ◽  
Shell Finite Element ◽  
The Continuum

This paper presents an investigation of the line-spring model (LSM) of Rice and Levy as applied to nonlinear crack problems. A J2 deformation theory of plasticity formulation of a LSM for obtaining the fully plastic crack solutions is first described in the framework of a shell finite element method. Results are obtained for 2-D axial and circumferential cracks in cylinders and are compared against those developed by detailed finite element crack tip analyses. Discrepancies are found in the case of axially cracked cylinders under internal pressure. To overcome this problem a modified approach, termed the continuum-LSM, is presented, and its finite element implementation is described in some detail. It is shown that in contrast to the shell-LSM, the results obtained by the continuum-LSM for internally pressurized axially cracked cylinders are in close agreement with detailed finite element crack-tip calculations. Lastly, a discussion on the fully plastic analysis of surface cracks by the LSM is also given.

Analysis of surface cracks in plates and shells using the line-spring model and ADINA

1983 ◽  
Vol 17 (5-6) ◽  
pp. 881-890 ◽  
Author(s):  
M.D. German ◽  
V. Kumar ◽  
H.G. deLorenzi
Keyword(s):  
Surface Cracks ◽  
Spring Model ◽  
Line Spring Model ◽  
Plates And Shells

scholarly journals SOME CRACK PROBLEMS ON PLATES AND SHELLS

Fracture 84 ◽  
1984 ◽  
pp. 791-801
Author(s):  
Liu Chuntu ◽  
Li Yingzhi
Keyword(s):  
Crack Problems ◽  
Plates And Shells
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