scholarly journals Determination of Highly Accurate Values of Stress Intensity Factor or Stress Concentration Factor of Plate Specimen by FEM.

1999 ◽  
Vol 65 (629) ◽  
pp. 26-31 ◽  
Author(s):  
Hironobu NISITANI ◽  
Takashi KAWAMURA ◽  
Wataru FUJISAKI ◽  
Takayuki FUKUDA
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Stress Concentration ◽  
Intensity Factor ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Plate Specimen

Strength of aluminum single-lap bonded joints in various disbond size at circular and semi-circular notches

2012 ◽  
Vol 14 (6) ◽  
pp. 753-768 ◽  
Author(s):  
Djamel Ouinas
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Stress Concentration ◽  
Intensity Factor ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Bonded Joints ◽  
Lap Joint ◽  
Fe Method ◽  
Single Lap Joint

Applications of assembly bonded technique have been extended currently to various industrial fields. Adhesively bonded joints are widely used in the aeronautics and astronautics industry as a result of their high strength and convenience in using the single-lap joint. The geometry of bonded single-lap joint is nonlinear and causes the eccentricity due to the non-collinear applied load, which conducts to a significant stress concentration at the extremities of overlap area, where the cracks may initiate. In this article, the finite element (FE) method is used to analyze the behavior of a bonded lap joint of aluminum adherend. The comparison of stress concentration factor and stress intensity factor of crack emanating from the circular and semi-circular notches are investigated. The single-lap bonded joints were analyzed to study the combined effect of the notch and the disbond as they pertain to joint strength and failure conditions. The results show that the stress concentration factor and stress intensity factor are affected by the negative disbond effect and their values are strongly proportional to its size.

Evaluation of stress intensity factors

1975 ◽  
Vol 10 (4) ◽  
pp. 217-224 ◽  
Author(s):  
D J Cartwright ◽  
D P Rooke
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Stress Concentration ◽  
Intensity Factor ◽  
Stress Intensity Factors ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Shape Factor ◽  
Intensity Factors ◽  
Crack Problems

Some of the more useful methods of evaluating stress intensity factors are presented in a concise form. The stress intensity factor is defined and compared with the more familiar stress concentration factor. The shape factor, the parameter which characterizes the shape of the crack, the orientation of the crack and the proximity of other boundaries, is introduced; the techniques for determining the shape factor are divided into theoretical and experimental. Each method is described with a minimum of mathematical detail; references are given to papers where the methods are more fully described and used to solve specific crack problems. The accuracy and usefulness of the methods is summarized.

Transition Method of Geometrically Similar Element to Calculate the Stress Concentration Factor of Notch

2007 ◽  
Vol 561-565 ◽  
pp. 2205-2208
Author(s):  
You Tang Li ◽  
Zhi Yuan Rui ◽  
Chang Feng Yan
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Stress Concentration ◽  
Intensity Factor ◽  
Boundary Conditions ◽  
High Precision ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Structural Dimension ◽  
Similar Element

There are close relations between stress concentration factor of notch and stress intensity factor of crack when the boundary conditions and geometrical conditions are in the same. The transition method of geometrically similar element to calculate the stress concentration factor of notch is proposed and some examples are computed by this method. There are some advantages for this method such as no limit of structural dimension, good adaptability, high precision and use convenience.

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