An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials

Herein, we consider the axisymmetric problem of a penny-shaped crack in an elastic material sandwiched between other materials. It is assumed that the central substance is composed of an elastic layer held between two semi-infinite bodies with different elastic constants, and that the crack is situa...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Kotaro MIURA, Makoto SAKAMOTO, Koichi KOBAYASHI, Jonas A. PRAMUDITA, Yuji TANABE
Formato: article
Lenguaje:EN
Publicado: The Japan Society of Mechanical Engineers 2018
Materias:
Acceso en línea:https://doaj.org/article/6f0bc9c4e4d448f4ba444f14cbd2275e
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:6f0bc9c4e4d448f4ba444f14cbd2275e
record_format dspace
spelling oai:doaj.org-article:6f0bc9c4e4d448f4ba444f14cbd2275e2021-11-26T07:20:09ZAn analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials2187-974510.1299/mej.18-00125https://doaj.org/article/6f0bc9c4e4d448f4ba444f14cbd2275e2018-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/3/5_18-00125/_pdf/-char/enhttps://doaj.org/toc/2187-9745Herein, we consider the axisymmetric problem of a penny-shaped crack in an elastic material sandwiched between other materials. It is assumed that the central substance is composed of an elastic layer held between two semi-infinite bodies with different elastic constants, and that the crack is situated in the central plane of the elastic layer and subjected to uniform pressures on its internal surfaces. We consider two contact conditions; perfectly bonded and frictionless contact at the interfaces with the dissimilar materials. Dual integral equations are reduced to an infinite system of simultaneous equations by expressing normal displacements on the crack surfaces as an appropriate series function. Numerical results were obtained to examine the effects of the elastic constants of the layer and semi-infinite bodies and contact conditions on the stress intensity factor at the tip of the penny-shaped crack, the distribution of normal displacement, and stress on the crack plane. Based on the results of these numerical calculations, several conclusions can be made, as follows. 1) The distributions of normal displacement and stress at the crack plane and the stress intensity factor at the tip of the crack become larger than the results for an infinite solid when the ratio of the shear modulus of the layer to that of the semi-infinite bodies is larger than 1. 2) The numerical results for normal displacement and stress, and for stress intensity factors, in the frictionless case are higher than for the perfectly bonded case regardless of the shear modulus ratio and layer thickness ratio. The difference between the perfectly bonded and frictionless cases becomes greater as the layer thickness ratio becomes smaller. 3) There is a slight difference in the stress intensity factor values obtained from the present work and the corresponding results previously reported in the literature.Kotaro MIURAMakoto SAKAMOTOKoichi KOBAYASHIJonas A. PRAMUDITAYuji TANABEThe Japan Society of Mechanical Engineersarticleelasticityfracture mechanicspenny-shaped crackstress intensity factormixed boundary value problemaxisymmetric stresssandwiched materialinternal pressuredual integral equationsMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 3, Pp 18-00125-18-00125 (2018)
institution DOAJ
collection DOAJ
language EN
topic elasticity
fracture mechanics
penny-shaped crack
stress intensity factor
mixed boundary value problem
axisymmetric stress
sandwiched material
internal pressure
dual integral equations
Mechanical engineering and machinery
TJ1-1570
spellingShingle elasticity
fracture mechanics
penny-shaped crack
stress intensity factor
mixed boundary value problem
axisymmetric stress
sandwiched material
internal pressure
dual integral equations
Mechanical engineering and machinery
TJ1-1570
Kotaro MIURA
Makoto SAKAMOTO
Koichi KOBAYASHI
Jonas A. PRAMUDITA
Yuji TANABE
An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
description Herein, we consider the axisymmetric problem of a penny-shaped crack in an elastic material sandwiched between other materials. It is assumed that the central substance is composed of an elastic layer held between two semi-infinite bodies with different elastic constants, and that the crack is situated in the central plane of the elastic layer and subjected to uniform pressures on its internal surfaces. We consider two contact conditions; perfectly bonded and frictionless contact at the interfaces with the dissimilar materials. Dual integral equations are reduced to an infinite system of simultaneous equations by expressing normal displacements on the crack surfaces as an appropriate series function. Numerical results were obtained to examine the effects of the elastic constants of the layer and semi-infinite bodies and contact conditions on the stress intensity factor at the tip of the penny-shaped crack, the distribution of normal displacement, and stress on the crack plane. Based on the results of these numerical calculations, several conclusions can be made, as follows. 1) The distributions of normal displacement and stress at the crack plane and the stress intensity factor at the tip of the crack become larger than the results for an infinite solid when the ratio of the shear modulus of the layer to that of the semi-infinite bodies is larger than 1. 2) The numerical results for normal displacement and stress, and for stress intensity factors, in the frictionless case are higher than for the perfectly bonded case regardless of the shear modulus ratio and layer thickness ratio. The difference between the perfectly bonded and frictionless cases becomes greater as the layer thickness ratio becomes smaller. 3) There is a slight difference in the stress intensity factor values obtained from the present work and the corresponding results previously reported in the literature.
format article
author Kotaro MIURA
Makoto SAKAMOTO
Koichi KOBAYASHI
Jonas A. PRAMUDITA
Yuji TANABE
author_facet Kotaro MIURA
Makoto SAKAMOTO
Koichi KOBAYASHI
Jonas A. PRAMUDITA
Yuji TANABE
author_sort Kotaro MIURA
title An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
title_short An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
title_full An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
title_fullStr An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
title_full_unstemmed An analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
title_sort analytical solution for the axisymmetric problem of a penny-shaped crack in an elastic layer sandwiched between dissimilar materials
publisher The Japan Society of Mechanical Engineers
publishDate 2018
url https://doaj.org/article/6f0bc9c4e4d448f4ba444f14cbd2275e
work_keys_str_mv AT kotaromiura ananalyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT makotosakamoto ananalyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT koichikobayashi ananalyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT jonasapramudita ananalyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT yujitanabe ananalyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT kotaromiura analyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT makotosakamoto analyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT koichikobayashi analyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT jonasapramudita analyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
AT yujitanabe analyticalsolutionfortheaxisymmetricproblemofapennyshapedcrackinanelasticlayersandwichedbetweendissimilarmaterials
_version_ 1718409662881071104