Shkril A. Numerical modelling of fracture of prismatic bodies using half-analytical finite element method

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0407U001599

Thesis Registration Form

0407U001599.pdf

Applicant for

Specialization

  • 01.02.04 - Механіка деформівного твердого тіла

30-03-2007

Specialized Academic Board

Д 26. 056. 04

Essay

Resolving relations of half-analytical finite element method for prismatic bodies with variable cross-section area are obtained. Elaborated is an algorithm to model crack propagation in case of cyclic loading, which, while solving a finite element method originated system of equations, consideres evolutional character of fracturing. Technics for computing J-integral, that garantees its being invariant in discrete models of finite element method, is tested. New solutions of practically important problems related to finding stress intensity factors for a cross-like specimens are obtained, modeled is crack propagation in gas turbine blades, and a value of J-integral in a compact specimen is computed.

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