Cracking in heat-releasing perforated material

Мирсалимов, В. М.

doi:10.1007/s00707-016-1711-5

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…To the system of singular integral equations (24) it is necessary to add the conditions following from the physical sense of the problem:…”

Section: Solution Methodsmentioning

confidence: 99%

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Crack nucleation in rod-type nuclear fuel pellet

Мирсалимов

2018

Mathematics and Mechanics of Solids

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A plane problem of fracture mechanics on crack nucleation in a rod-type nuclear fuel pellet is considered. Nuclear reactor fuel pellets in operation may be damaged in various ways; in particular, crack nucleation. We consider a problem for the case of a heat-releasing fuel pellet with cladding: as the heat release intensity increases, zones of heightened stress are formed in the nuclear fuel pellet. The heightened stress will promote the appearance of prefracture bands that are simulated as zones of weakened interparticle bonds of the material. Interaction of prefracture zone faces is simulated by placing bonds between faces that have a specified deformation pattern. The problem of equilibrium of a fuel pellet with prefracture zones is reduced to the solution of a system of singular integral equations. An analysis of the ultimate state of the zone of weakened interparticle bonds of the material is realized on the basis of the criterion of critical opening of prefracture zone faces.

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“…To the system of singular integral equations (24) it is necessary to add the conditions following from the physical sense of the problem:…”

Section: Solution Methodsmentioning

confidence: 99%

“…Then the system of singular integral equations (24) and the additional conditions (25) are written in the form…”

Section: Algebraization Of Main Resolving Equationsmentioning

confidence: 99%

Crack nucleation in rod-type nuclear fuel pellet

Мирсалимов

2018

Mathematics and Mechanics of Solids

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“…The heat transfer in fuel cells is mainly realized by heat conductivity. Therefore, the calculation of temperature fields therein consists of solution of problems of heat conductivity theory in the presence of internal heat sources (Fil’shtinskii, 1964; Mirsalimov, 1984, 2017; Sobolev and Mukhina, 1958).…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Cracks with interfacial bonds in perforated heat-releasing nuclear fuel

Мирсалимов

2017

International Journal of Damage Mechanics

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We consider a fracture mechanics problem for heat-releasing isotropic material weakened by a doubly periodic system of identical cylindrical channels of circular cross section. It is considered that as the intensity of heat release increases in the material, its elastic properties become temperature dependent and failure of the material occurs. It is accepted that rectilinear cracks with bonds between the faces at the end zones originate from the surface of holes. The condition of limit equilibrium of a crack with end zone is formulated with regard to criterion of ultimate stretching of material’s bonds.

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Partial closure of rectilinear cracks with bonds in a stringer plate with a hole

Mir-Salim-zade¹

2017

J. of Mech. Eng.

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Cracking in heat-releasing perforated material

Cited by 3 publications

References 19 publications

Crack nucleation in rod-type nuclear fuel pellet

Crack nucleation in rod-type nuclear fuel pellet

Cracks with interfacial bonds in perforated heat-releasing nuclear fuel

Partial closure of rectilinear cracks with bonds in a stringer plate with a hole

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