Dynamics, Durability of Instruments and Equipment
DOI: http://www.dx.doi.org/10.24866/2227-6858/2019-4-4
Doronin S., Filippova Yu.
SERGEY DORONIN, Candidate of Engineering Sciences, Leading Researcher,AuthorID: 116272, SPIN: 9816-9080, ORCID: 0000-0002-5256-3871,
ResearcherID: V-5470-2017, ScopusID: 57193348323, e-mail: sdoronin@ict.nsc.ru
YULIYA FILIPPOVA, Junior Researcher, AuthorID: 636598, SPIN: 7778-5327,
ORCID: 0000-0001-7452-2096, ResearcherID: A-9919-2014, ScopusID: 57193351701,
e-mail: filippovajf@ict.nsc.ru
Laboratory of Computational Mechanics and Risk Analysis
Institute of Computational Technologies SB RAS, Krasnoyarsk Branch Office
53 Mira Av., Krasnoyarsk, Russia, 660049
Survival assessment of structurally complex bearing structures
based on damage accumulation scenarios
Abstract: For structurally complex strength structures, a survivability assessment technique is proposed, which includes models of the structures and possible interactions of its constituent elements, analysis of possible limiting states and conditions of failures, identifying scenarios of damage accumulation, developing and studying a logical-computational model of damaged structure behavior. A ranked survivability score has been introduced, taking values of 1 (structural integrity is ensured in the presence of a sequence of damages), 0.5 (structural integrity is ensured with at least one damage), 0 (structural integrity is not ensured with a single damage). Obtaining rank estimates is carried out on the set of all potential scenarios of accumulation of structural damage and includes the determination of both individual ranks for each of the possible scenarios and the potential, systemically determined survivability rank, taking into account all possible outcomes of damage accumulation scenarios. We studied the survivability of a typical joint assembly of the rod elements of the bearing skeleton of a large-sized mirror antenna: the potential survivability rank is 0.66, while the survivability ranks in the considered set of damage accumulation scenarios were 0.5–1.0 depending on the values and the ratio of the pretension force of the bolts and the tensile force in the bearing rod element. Keywords: structurally complex structures, survivability, damage scenario, computational model.
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