Mixed-Mode Stress Intensity Factors for an Embedded Crack in an Orthotropic FGM Coating

Dağ, Serkan; Ilhan, K. Ayse

doi:10.1063/1.2896771

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach is known to lead to highly accurate results provided that the finite element mesh is sufficiently refined (Yildirim et al, 2005b). Modes I and II stress intensity factors at the crack tip are computed by the finite elements based displacement correlation technique (DCT) which is developed by Dag et al (2007) to study mixed-mode fracture of orthotropic FGMs. The analysis is conducted for the particular case for which there is disagreement between our results and that of Ozturk and Erdogan (1999).…”

Section: Fracture Mechanics Parameters For a Mechanically Loaded Embementioning

confidence: 99%

Mixed-mode fracture analysis of orthotropic functionally graded materials under mechanical and thermal loads

Dağ

Yıldırım

Sarikaya

2007

International Journal of Solids and Structures

View full text Add to dashboard Cite

Mixed-mode fracture problems of orthotropic functionally graded materials (FGMs) are examined under mechanical and thermal loading conditions. In the case of mechanical loading, an embedded crack in an orthotropic FGM layer is considered. The crack is assumed to be loaded by arbitrary normal and shear tractions that are applied to its surfaces. An analytical solution based on the singular integral equations and a numerical approach based on the enriched finite elements are developed to evaluate the mixed-mode stress intensity factors and the energy release rate under the given mechanical loading conditions. The use of this dual approach methodology allowed the verifications of both methods leading to a highly accurate numerical predictive capability to assess the effects of material orthotropy and nonhomogeneity constants on the crack tip parameters. In the case of thermal loading, the response of periodic cracks in an orthotropic FGM layer subjected to transient thermal stresses is examined by means of the developed enriched finite element method. The results presented for the thermally loaded layer illustrate the influences of the material property gradation profiles and crack periodicity on the transient fracture mechanics parameters.

show abstract

Section: Fracture Mechanics Parameters For a Mechanically Loaded Embementioning

confidence: 99%

Mixed-mode fracture analysis of orthotropic functionally graded materials under mechanical and thermal loads

Dağ

Yıldırım

Sarikaya

2007

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…It is assumed that all the elastic constants in the plate vary only along the radial direction, and the plate is uniformly loaded at infinity. In this case, the method of piece-wise homogeneous layers can be used, that is, the plate can be decomposed to N inner rings S (1) , S (2) , . .…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Recent developments include the following works: Shen and Noda [1] presented a postbuckling analysis for a functionally graded cylindrical shell with piezoelectric actuators subjected to lateral or hydrostatic pressure combined with electric loads in thermal environments. Das et al [2] studied the Mixed-mode stress intensity factors for an embedded crack in an orthotropic FGM coating. Zhang et al [3] conducted the cohesive modeling of dynamic crack growth in homogeneous and functionally graded materials.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis of a functional graded material plate with a circular hole

2009

View full text Add to dashboard Cite

This paper is to study the two-dimensional stress distribution of a functional graded material plate (FGMP) with a circular hole under arbitrary constant loads. With using the method of piece-wise homogeneous layers, the stress distribution of the functional graded material plate having radial arbitrary elastic properties is derived based on the theory of the complex variable functions. As examples, numerical results are presented for the FGMPs having given radial Young's modulus or Poisson's ratio. It is shown that the stress is greatly reduced as the radial Young's modulus increased, but it is less influenced by the variation of the Poisson's ratio. Moreover, it is also found that the stress level varies when the radial Young's modulus increased in different ways. Thus, it can be concluded that the stress around the circular hole in the FGMP can be effectively reduced by choosing the proper change ways of the radial elastic properties.

show abstract

Application of Hankel Transform for Solving a Fracture Problem of a Cracked Piezoelectric Strip Under Thermal Loading

Ueda¹

2012

Fourier Transform - Materials Analysis

View full text Add to dashboard Cite

Mixed-Mode Stress Intensity Factors for an Embedded Crack in an Orthotropic FGM Coating

Cited by 3 publications

References 0 publications

Mixed-mode fracture analysis of orthotropic functionally graded materials under mechanical and thermal loads

Mixed-mode fracture analysis of orthotropic functionally graded materials under mechanical and thermal loads

Stress analysis of a functional graded material plate with a circular hole

Application of Hankel Transform for Solving a Fracture Problem of a Cracked Piezoelectric Strip Under Thermal Loading

Contact Info

Product

Resources

About