Khalimon O. Model of damage accumulation in structural materials under elastic-plastic deformation.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0407U004047

Thesis Registration Form

0407U004047.pdf

Applicant for

Specialization

  • 01.02.04 - Механіка деформівного твердого тіла

22-10-2007

Specialized Academic Board

Д 26.002.01

Publishing and Printing Institute of Igor Sikorsky Kyiv Polytechnic Institute

Essay

The generalized phenomenological model of damage accumulation in structural materials at elasto-plastic deformation under complex stress is developed. In model influence of sign of the first invariant stress tensor on a kinetics of damage accumulation is considered. The generalized failure criterion of a boundary state of structural materials on stage of macrocrack initiation subject to kind of stress is developed and validated. Experimental and theoretical researches, that have been carried out, have displayed satisfactory correlation of the developed model and experimental data by two techniques of damage accumulation kinetics definition (a specific resistance and a coefficient of elasticity) at tension, tension-compression and torsion. Key Words: damage model, failure criterion, complex stress.

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Files

Dis1.doc

Dis2.doc

aref.doc

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