Axisymmetrical Elastic Behavior and Stress Intensity Factor for a Nonhomogeneous Medium with a Penny-Shaped Crack

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概要

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• Axisymmetrical elastic problems for a nonhomogeneous medium with a penny-shaped crack are treated theoretically. It is assumed that the nonhomogeneous material properties of shear modulus of elasticity G vary with the axial coordinate z according to the power product form, i.e., G(z)=G_0Z^m. As an analytical model, a nonhomogeneous infinite body or thick plate with a penny-shaped crack subject to uniformly distributed loading such as internal pressure on the crack surface is considered. The above-mentioned axisymmetric problems with a singular stress field are developed theoretically utilizing a fundamental equation system for such a nonhomogeneous medium derived in our previous paper. Thereafter, numerical calculations are carried out for several cases taking into account the variations of the nonhomogeneous parameter m of shear modulus of elasticity G and the thickness of the slab, and the numerical results for displacements, stresses and the stress intensity factor at a crack tip are shown graphically. The influences of the nonhomogeneous material property and the thickness on the elastic behavior such as displacements, stresses and the stress intensity factor are examined precisely.

• 一般社団法人日本機械学会の論文
• 1998-10-15

著者

• Tanigawa Yoshinobu

  Department of Mechanical Systems Engineering, Osaka Prefecture University

• Jeon Sang-pyo

  Graduate Student Osaka Prefecture University

• Tanigawa Yoshinobu

  Department Of Mechanical Systems Engineering Osaka Prefecture University

• Tanigawa Yoshinobu

  Department Of Mechanical Engineering University Of Osaka Prefecture

関連論文

• Deriving the System of Fundamental Equations for Three-Dimensional Thermoelastic Field with Nonhomogeneous Material Properties and Its Application to a Thick Plate
• Axisymmetrical Elastic Behavior and Stress Intensity Factor for a Nonhomogeneous Medium with a Penny-Shaped Crack
• Coupled Thermal Stress Analysis of a Solid Cylinder wth Transversely Isotropic Properties : Series A : Solid-Mechanics, Strength of Materials

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