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Information × Registration Number 0209U006850, 0107U005517 , R & D reports Title Estimation of stress-strain state of the fastening elements of hydraulic turbine taking into account the exploitation defects. popup.stage_title Head Sulym Нeorhij Teodorovych, Registration Date 25-06-2009 Organization Pidstryhach Institute for Applied Problems of Mechanics and Mathematics NASU popup.description2 The work develops the mathematical models and the methodological framework for engineering calculation of stress-strain state and stress concentration in fastenings of hydraulic turbine that take into account a measure of development of crack-like exploitation defects and other damages. This enables determination of the structure critical condition location, and also stress concentration factors in turns of a smooth screw and stress intensity factors near the crack tip. The methodology, and also the techniques of research and determination of the limit state parameters of axisymmetric solids with thin cuts are developed, namely: the stress hypersingular integral equations for axisymmetric elasticity are regularized; the nearly-singular integrals evaluation methods are provided; the invariant M-integral is proposed for SIF calculation. Corresponding models for plane and axisymmetric problems are studied; corresponding gage functions are constructed. Product Description popup.authors popup.nrat_date 2020-04-02 Close