Fracture Analysis of Several Interface Cracks in an FG Half-Plane with a Homogeneous Coating under Mixed-Mode Transient Loading
Subject Areas :
Mechanics of Solids
Rasul Bagheri
1
,
Mojtaba Ayatollahi
2
,
S. M Hosseini
3
,
A Bagheri
4
1 - Department of Mechanical Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran
2 - Faculty of Engineering, University of Zanjan, Zanjan, Iran
3 - Department of Mechanical Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran
4 - Department of Mathematics, Payame Noor University, Ardabil, Iran
Received: 2023-03-28
Accepted : 2023-05-18
Published : 2023-06-01
Keywords:
FGM half-plane,
In-plane loading,
Homogeneous coating,
Several interface cracks,
Dislocation Method,
Abstract :
In this paper, the mechanical fracture problem of a half-plane made of functionally graded material (FGM) with a coating of a homogeneous layer containing multiple interface cracks is investigated in order to determine the dynamic stress intensity factors (DSIFs) under transient in-plane loading. According to exponential law, the properties of functionally graded material change continuously along y-direction. Initially, integral transformations and dislocation of the Volterra type of climbing and sliding edges on the interface of a FG half-plane with a homogeneous coating leads to the numerical solution of a system with singular integral equations. These equations which have the Cauchy type-singularity are then obtained using the distributed dislocation technique (DDT). Using the inversion technique in the Laplace domain, the dislocation density on the crack faces is obtained which has led to the determination of the DSIFs. Finally, in order to show the accuracy and validity of this research, the final results in the form of graphs have been compared with other references and a very acceptable conformity has been observed. The influences of the FG parameter, coating thickness, crack length, the variation of time and the interaction between of cracks on the DSIFs are studied.
References:
Ma L., Wu L.Z., Guo L.C., 2002, Dynamic behavior of two collinear anti-plane shear cracks in a functionally graded layer bonded to dissimilar half planes, Mechanics Research Communications 29: 207-215.
El-Borgi S., Erdogan F., Ben Hatira F., 2003, Stress intensity factors for an interface crack between a functionally graded coating and a homogeneous substrate, International Journalof Fracture 123: 139-162.
Chi S., Chung Y.L., 2003, Cracking in coating–substrate composites with multi-layered and FGM coatings, Engineering Fracture Mechanics 70: 1227-1243.
Huang G.Y., Wang Y.S., Gross D., 2003, Fracture analysis of functionally graded coatings: plane deformation, European Journal of Mechanics; A/Solids 22: 535-544.
Ma L., Wu L.Z., Zhou Z.G., 2004, Dynamic stress intensity factors around two parallel cracks in a functionally graded layer bonded to dissimilar half-planes subjected to anti-plane incident harmonic stress waves, International Journalof Engineering Science 42: 187-202.
Dag S., Yildirim B., Erdogan F., 2004, Interface crack problems in gradedorthotropic media: Analytical and computational approaches, International Journalof Fracture 130: 471-496.
Liu L., Kardomateas G.A., Holmes J.W., 2004, Mixed-mode stress intensity factors for a crack in an anisotropic bi-material strip, International Journal of Solids and Structures 41: 3095-3107.
Guo L.C., Wu L.Z., Zeng T., Cao D., 2005, The transient response of a coating–substrate structure with a crack in the functionally graded interfacial layer, Composite Structures 70: 109-119.
Li X.F., 2005, Two perfectly-bonded dissimilar orthotropic strips with an interfacial crack normal to the boundaries, Applied Mathematicsand Computation 163: 961-975.
Huang G.Y., Wang Y.S., Yu S.W., 2005, A new model for fracture analysis of functionally graded coatings under plane deformation, Mechanics of Materials 37: 507-516.
Chen J., 2005, Determination of thermal stress intensity factors for an interface crack in a graded orthotropic coating-substrate structure, International Journalof Fracture 133: 303-328.
Long X., Delale F., 2005, The mixed mode crack problem in an FGM layer bonded to a homogeneous half-plane, International Journal of Solids and Structures 42: 3897-3917.
Yong dong L., Bin J., Nan Z., Li qiang T., Yao D., 2006, Dynamic stress intensity factor of the weak/micro-discontinuous interface crack of a FGM coating, International Journal of Solids and Structures 43: 4795-4809.
Ioka S., Masuda K., Kubo S., 2007, Singular stress field near the edge of interface of bonded dissimilar materials with an interlayer, International Journal of Solids and Structures 44: 6232-6238.
Li X.F., Fan T.Y., 2007, Dynamic analysis of a crack in a functionally graded material sandwiched between two elastic layers under anti-plane loading, Composite Structures 79: 211-219.
Guo L.C., Noda N., 2008, Dynamic investigation of a functionally graded layered tructure with a crack crossing the interface, International Journal of Solids and Structures 45: 336-357.
Li Y.D., Lee K.Y., 2009, Anti-plane fracture analysis for the weak-discontinuous interface in a non-homogeneous piezoelectric bi-material structure, European Journal of Mechanics; A/Solids 28: 241-247.
Peng X.L., Li X.F., 2009, Transient response of the crack-tip field in a magnetoelectroelastic half-space with a functionally graded coating under impacts, Archive of Applied Mechanics 79: 1099-1113.
Torshizian M.R., Kargarnovin M.H., 2010, Anti-plane shear of an arbitrary oriented crack in a functionally graded strip bonded with two dissimilar half-planes, Theoreticaland Applied Fracture Mechanics 54: 180-188.
Cheng Z., Gao D., Zhong Z., 2010, Crack propagating in functionally graded coating with arbitrarily distributed material properties bonded to homogeneous substrate, Acta Mechanica Solida Sinica 23: 437-446.
Cheng Z., Gao D., Zhong Z., 2012, A moving interface crack between two dissimilar functionally graded strips under plane deformation with integral equation methods, Engineering Analysis with Boundary Elements 36: 267-273.
Shi P.P., 2015, Interaction between the doubly periodic interfacial cracks in a layered periodic composite: Simulation by the method of singular integral equation, Theoreticaland Applied Fracture Mechanics 78: 25-39.
Fallahnejad M., Bagheri R., Noroozi M., 2018, Transient analysis of two dissimilar FGM layers with multiple interface cracks, Structural Engineeringand Mechanics 67: 277-281.
Bagheri R., 2019, Transient behavior of multiple interface cracks in two non-homogeneous half-layers, Iranian Journal of Science and Technology Transactions of Mechanical Engineering 44: 619-629.
Bagheri R., Monfared M.M., 2020, In-plane transient analysis of two dissimilar nonhomogeneous half-planes containing several interface cracks, Acta Mechanica 231: 3779-3797.
Bagheri R., Monfared M.M., 2021, Mixed-mode fracture analysis for two dissimilar half-planes with multiple interface moving cracks, Wave Random Complex 31: 1-23.
Bagheri R., Enjilela V., 2021, Time-harmonic analysis of multiple interface cracks in two dissimilar FGM half-planes: In-plane problem, Theoretical and Applied Fracture Mechanics 116: 103094.
Bagherpoor F., Pourseifi M., 2022, Dynamic mode III stress intensity factors of multiple axisymmetric interfacial cracks in an FGM coated orthotropic layer, International Journal for Computational Methods in Engineering Science and Mechanics 2:1-7.
Rabieifar A., Pourseifi M., Derili H. 2018, Transient analysis for torsional impact of multiple axisymmetric cracks in the functionally graded orthotropic medium, The IMA Journal of Applied Mathematics 83: 131-47.
Monfared M.M., Pourseifi M., Bagheri R., 2019, Computation of mixed mode stress intensity factors for multiple axisymmetric cracks in an FGM medium under transient loading, International Journal of Solids and Structures 58: 220-231.
Stehfest H., 1970, Algorithm 368: Numerical inversion of Laplace transforms [D5], Communicationsof the ACM 13: 47-49.
Bueckner H., 1958, The propagation of cracks and the energy of elastic deformation, Transaction of the ASME Series E 80: 1225-1230.
Baghestani A.M., Fotuhi A.R., Fariborz S.J., 2013, Multiple interacting cracks in an orthotropic layer, Archive of Applied Mechanics 83: 1549-1567.
Sih G., Embley G., Ravera R., 1972, Impact response of a finite crack in plane extension, International Journal of Solids and Structures 8: 977-993.
Mottale H., Monfared M.M., Bagheri R., 2018, The multiple parallel cracks in an orthotropic non-homogeneous infinite plane subjected to transient in-plane loading, Engineering Fracture Mechanics 199: 220-234.
Jafari A., Monfared M.M., Bagheri R., 2019, Mixed‑mode computation of the transient dynamic stress intensity factor for multiple interface cracks, Journalof the Brazilian Society of Mechanical Sciences 41: 573.
Monfared M.M., Ayatollahi M., 2016, Multiple crack problems in nonhomogeneous orthotropic planes under mixed mode loading conditions, Engineering Fracture Mechanics 155: 1-17.