The Experts below are selected from a list of 225 Experts worldwide ranked by ideXlab platform
Noda Naotake - One of the best experts on this subject based on the ideXlab platform.
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transient thermal stress intensity factors for a crack in a semi Infinite Plate of a functionally gradient material
International Journal of Solids and Structures, 1994Co-Authors: Jin Zhihe, Noda NaotakeAbstract:Abstract A crack in a semi-Infinite Plate of a functionally gradient material is studied under thermal shock loading conditions. The crack faces are supposed to be completely insulated. All material properties are assumed to be exponentially dependent on the distance from the crack line parallel to the boundary of the Plate. By using both the Laplace transform and the Fourier transform, the thermal and mechanical problems are reduced to two systems of singular integral equations which are solved numerically. The stress intensity factors vs time for various material constants are calculated. The results show that by selecting the material constants appropriately, the stress intensity factors can be reduced substantially.
Milan Batista - One of the best experts on this subject based on the ideXlab platform.
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on the stress concentration around a hole in an Infinite Plate subject to a uniform load at infinity
International Journal of Mechanical Sciences, 2011Co-Authors: Milan BatistaAbstract:Abstract In this paper stress concentration around a hole in an Infinite Plate that is subjected to a uniform load at infinity is considered. The stress is calculated by using a modified Muskhelishvili complex variable method. The method is illustrated by several examples of stress distribution around polygonal holes of a complex geometry utilizing the Schwartz–Chistoffel mapping function.
Y. Z. Chen - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of T-stress for a hypocycloid hole in an Infinite Plate
Multidiscipline Modeling in Materials and Structures, 2013Co-Authors: Y. Z. ChenAbstract:Purpose – This paper is devoted to the evaluation of the T-stress for a hypocycloid hole in an Infinite Plate. The remote tractions are applied for the Infinite Plate containing the hypocycloid hole. After using the conformal mapping, an elasticity solution is obtained, and the T-stress at the cusp tip can be abstracted from this solution. The paper aims to discuss these issues. Design/methodology/approach – Conformal mapping technique is used for solving the T-stress problem for a hypocycloid cusp hole problem. Findings – The present study proves that the cusp configuration has a significant influence to the value of T-stress at cusp crack tip. Originality/value – A closed form solution for the T-stress in cusp crack is first obtained in the submission.
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An Infinite Plate Weakened by Periodic Cracks
Journal of Applied Mechanics, 2002Co-Authors: Y. Z. ChenAbstract:An Infinite Plate weakened by doubly distributing cracks is studied in this paper. Two loading cases, the remote tension and the remote shear stresses, are assumed. Analysis is performed for a cracked cell cut from the Infinite Plate. It is found that the eigenfunction expansion variational method is efficient to solve the problem. The stress intensity factor, the T-stress, and the elastic response are evaluated. The cracked Plate can be equivalent to an orthotropic medium without cracks. The equivalent elastic constants are presented. ©2002 ASME
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A contact crack problem in an Infinite Plate
International Journal of Engineering Science, 1999Co-Authors: Y. Z. ChenAbstract:The problem of an Infinite Plate with crack of length 2a loaded by the remote tensile stress P and a pair of concentrated forces Q is discussed. The value of the force Q for the initial contact of crack face is investigated and the contact length elevated, while the Q force increases. The problem is solved assuming that the stress intensity factor vanishes at the end point of the contact portion. By the Fredholm integral equation for the multiple cracks, the reduction of stress intensity factor due to Q is found. (C) 1999 Elsevier Science Ltd. All rights reserved.
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Interaction between curved crack and elastic inclusion in an Infinite Plate
Archive of Applied Mechanics, 1997Co-Authors: Y. Z. Chen, R. S. ChenAbstract:In this paper, the curved-crack problem for an Infinite Plate containing an elastic inclusion is considered. A fundamental solution is proposed, which corresponds to the stress field caused by a point dislocation in an Infinite Plate containing an elastic inclusion. By placing the distributed dislocation along the prospective site of the crack, and by using the resultant force function as the right-hand term in the equation, a weaker singular integral equation is obtainable. The equation is solved numerically, and the stress intensity factors at the crack tips are evaluated. Interaction between the curved crack and the elastic inclusion is analyzed.
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T stress in multiple crack problem for an Infinite Plate
Engineering Fracture Mechanics, 1994Co-Authors: Y. Z. ChenAbstract:Abstract The non-singular and bounded term in the expansion form of stress near the crack tip is called the T stress. The T stress in multiple crack problems for an Infinite Plate is analyzed. The original problem is decomposed into a uniform stress field and many single crack problems. The T stress at the crack tip for the multiple crack problem consists of three parts: (a) the influence from the uniform stress field; (b) the influence from the considered crack; and (c) the influence from the remaining cracks. Numerical examples are given to demonstrate the T stress at the crack tips.
Naoaki Noda - One of the best experts on this subject based on the ideXlab platform.
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stress intensity factors for an edge interface crack in a bonded semi Infinite Plate for arbitrary material combination
International Journal of Solids and Structures, 2012Co-Authors: Naoaki NodaAbstract:Abstract Although a lot of interface crack problems were previously treated, few solutions are available under arbitrary crack lengths and material combinations. In this paper the stress intensity factors of an edge interface crack in a bonded strip are considered under tension with varying the crack length and material combinations systematically. Then, the limiting solutions are provided for an edge interface crack in a bonded semi-Infinite Plate under arbitrary material combinations. In order to calculate the stress intensity factors accurately, exact solutions in an Infinite bonded Plate are also considered to produce proportional singular stress fields in the analysis of FEM by superposing specific tensile and shear stresses at infinity. The details of this new numerical solution are described with clarifying the effect of the element size on the stress intensity factor. It is found that for the edge interface crack the normalized stress intensity factors are not always finite depending upon Dunders’ parameters. This behavior can be explained from the condition of the singular stress at the end of bonded strip. Convenient formulas are also given by fitting the computed results.
M. A. Mansour - One of the best experts on this subject based on the ideXlab platform.
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Radiative effect on the longitudinal streamlines of a semi-Infinite Plate by a viscoelastic fluid with heat transfer
Astrophysics and Space Science, 1990Co-Authors: M. A. MansourAbstract:A numerical analysis is made of the dynamic boundary layer and the thermal radiation boundary layer at a semi-Infinite Plate longitudinally streamilined by viscoelastic fluid.