Kit M. Residual life-time determination of the constructions thin-walled elements with cracks under the variable loadings

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0410U002972

Applicant for

Specialization

  • 01.02.04 - Механіка деформівного твердого тіла

31-05-2010

Specialized Academic Board

Д 35.195.01

Pidstryhach Institute for Applied Problems of Mechanics and Mathematics National Academy of Sciences of Ukraine

Essay

A mathematical model for research in the solids of fatigue cracks growth after many axial and many-frequency loading, determination on this basis of construction elements residual lifetime, and them cyclic strength has been formulated. The mentioned mathematical model for the case of determination of period of sub critical fatigue cracks growth in plates under biaxial and two frequency loading has been adapted. The criterion of cyclic strength of thin-walled construction elements with cracks has been formulated. Method of equivalent squares for effective realization of proposed model and approximate estimation of sub critical fatigue crack growth in solids has been developed.

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