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- W289452246 abstract "Service time and the strength of high-stressed threaded connections under cyclic nonlinear stress-strain conditions are determined by the behavior of the fatigue crack's initiation and propagation stages in local stress-strain concentration areas of threaded components. The ultimate states and failure criterion of cracked bolts/studs have been determined by analysis of the parameters of linear and nonlinear deformation and fracture mechanics. Evaluation of the number of cycles of fatigue crack initiation N c and the number of cycles to final failure N f for different design joints required an all-round consideration of cyclic nonelastic (nonlinear) stress-strain behavior. It also needed the further study of the influence of the conditions of cyclic, mechanical, and thermal loadings, as well as assembly and manufacturing based on the theoretical stress concentration factor K r (elastic deformation), stress K σ and strain K e (nonelastic deformation) factors' values in the mated-loaded (engaged) and nonloaded (free) thread turns. The analysis indicated a linear relation between critical value h m a x of the fatigue crack's depth and the cycle amplitude's stress σ a , as well as a correlation with the limiting value of the stress (strain) intensity factor. The remaining strength and fatigue life of the cracked threaded components are evaluated taking into consideration the values of the current thresholds and the limiting stress and strain intensity factor. The conditions of their applicability depend on the applicability of linear (elastic) or nonlinear (elastic-plastic) fracture mechanics criteria." @default.
- W289452246 created "2016-06-24" @default.
- W289452246 creator A5025874856 @default.
- W289452246 date "2009-03-05" @default.
- W289452246 modified "2023-09-25" @default.
- W289452246 title "Failure Criteria and Limiting States of Stress for Cracked Bolts/Studs" @default.
- W289452246 doi "https://doi.org/10.1520/stp13047s" @default.
- W289452246 hasPublicationYear "2009" @default.
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