Metadata (abstracts and keywords) for the articles in the journal
Ismailova R. I. INTERACTION OF PREFRACTURE ZONES IN A ROD FUEL ELEMENT // Vestnik I. Yakovlev Chuvach State Pedagogical University. Series: Mechanics of a limit state . 2016. № 1(27). p. 90-104
Author(s):
Ismailova R. I.
Index of UDK:
539.375
DOI:
Title:
INTERACTION OF PREFRACTURE ZONES IN A ROD FUEL ELEMENT
Keywords:
rod fuel element, protective coating, prefracture zone with bonds between the faces,
cohesive forces.
Abstracts:
We study the plane fracture mechanics problem for interaction of arbitrary number of
pre-fracture zones in a rod fuel element. During operation of the rod fuel element various damages,
particularly cracks formation, are possible. We consider the problem for rod fuel element with a
protective coating when with increasing of internal heat source intensity in the element are forming
domains of higher stresses. The domains of higher stresses will contribute to the emergence of zones
of weakened interparticle bonds of materials (pre-fracture zones). Interaction of prefracture zones
faces is modeled by bonds between the faces having a given deformation diagram. The problem of
the prefracture zones interaction is reduced to solving of a system of nonlinear singular integral
equations. From solution of this equations system are found the normal and tangential forces in the
zones of crack nucleation. Condition of cracking is formed based on the criterion of limit traction
of the material bonds.
The contact details of authors:
Ismailova Rena Ashraf gizi
e-mail: sopromat_v@mail.ru, Post-Graduate Student, Institute of Mathematics and Mechanics
of NAS of Azerbaijan, Baku, Azerbaijan