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  • 1990-1994  (5)
  • 1975-1979  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Computational mechanics 10 (1992), S. 335-343 
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A novel method for the multiple crack problems in a finite plate is proposed in this paper. The basic stress functions of the solution consist of two parts. One is the Fredholm integral equation solution for the crack problem in an infinite plate, and the other is that of the weighted residual method for general plane problems. The combined stress functions are used in the analysis and the boundary conditions on the crack surfaces and the boundary are considered. After the coefficients of the functions have been determined, the stress intensity factors (SIF) at the crack tips can be calculated. Some numerical examples are given and it was observed that when the cracks are very short, the results compare very favorably with the existing results for an infinite plate. Furthermore, the influence of the boundary can be considered. This method can be used for arbitrary multiple crack problems in a finite plate.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A combination of the weighted residual method and elasto-viscoplastic theory is used to study the plastic zone and the limit load of centre-cracked plate. A new set of displacement functions has been assumed, and a series of governing equations for elasto-plastic analysis are derived. Numerical examples show that this method offers good accuracy but requires very little computer time.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 15 (1979), S. R77 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 62 (1993), S. 203-218 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In this paper the boundary collocation method is presented for computing the stress intensity factors for an internal crack in a finite anisotropic plate. The stress functions are assumed such that they can represent the stress singularity at the crack tips, satisfying not only the governing equations of the anisotropic plate theory in the domain, but also the stress-free conditions on the crack surfaces. Therefore, only the boundary conditions of the plate need to be considered, and they can be satisfied approximately by the Boundary Collocation Method. Numerical examples demonstrated that the proposed method gives satisfactory results compared with the existing solutions.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 43 (1990), S. 97-108 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On analyse par la méthode de collocation des limites le problème d'une plaque finie comportant un trou circulaire avec une fissure, soumis à une contrainte uniforme appliquée à une certaine distance. Dans le cas d'une plaque infinie et de grandes dimensions par rapport à la longueur de la fissure et le rayon du trou, les valeurs du facteur d'intensité de contraintes calculées à l'aide de cette méthode coincident bien avec la solution existante. On obtient des résultats numériques du facteur d'intensité de contrainte pour différents rapports l/r de la fissure sur le rayon du trou, et pour les rapports a/b de la longueur de fissure équivalente sur la largeur de la plaque. L'analyse relative à des plaques finies peut fournir des résultats utiles à des applications pratiques.
    Notes: Abstract The problem of a finite plate containing a circular hole with a crack subjected to a uniform remote stress is analysed by boundary collocation method. For an infinite plate with dimensions large in comparison with the crack length and the radius of the hole, the stress intensity factor (SIF) values calculated by this method coincide very well with the existing solution. Numerical results of the SIF values are obtained for varying crack-length-to-hole-radius ratios, l/r, and equivalent crack-length-to-plate-width ratios, a/b. The analysis for finite plates can provide useful results for practical applications.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 58 (1992), S. 259-271 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In this paper an effective numerical method is presented for analyzing the stress intensity factors associated with the stress field near a partially debonded interface in a finite bi-material plate. The strees functions are assumed such that they can represent the stress singularity at the crack tips, satisfying not only the equilibrium equations in the domain, but also the stress and displacement conditions on the crack surfaces and across the interface. Therefore, only the boundary conditions of the plate need be considered, and they can be satisfied approximately by the Boundary Collocation Method. Numerical examples demonstrated that the proposed method gives satisfactory results and has many advantages compared to other methods.
    Type of Medium: Electronic Resource
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