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The method for determining the elastic-plastic characteristics of a thin-walled aircraft construction by a known deformation for a differential model of a stress-strain state

TitleThe method for determining the elastic-plastic characteristics of a thin-walled aircraft construction by a known deformation for a differential model of a stress-strain state
AuthorsA. Snegurenko1, V. Kostin1, S. Novikova1
1Kazan National Research Technical University named after A. N. Tupolev - KAI
AnnotationThe paper presents a method for solving the inverse problem of the strength of aircraft thin-walled constructions for differential models for calculating the stresses and deformations of their structure (stress-strain state). The method makes it possible to obtain the values of the elastic-plastic characteristics of the object (secant modules of the edges and panels) and construct the deformation diagrams on the basis of the known direct differential model and the specified deformation characteristics. The calculated characteristics are used to select the "best" rigidity parameters of the structural beams of the construction during the control phase. Theoretical results are confirmed by numerical experiments.
Keywordsstress-strain state, inverse strength problem, deformation diagram, elastic-plastic characteristics
CitationSnegurenko A., Kostin V., Novikova S. ''The method for determining the elastic-plastic characteristics of a thin-walled aircraft construction by a known deformation for a differential model of a stress-strain state'' [Electronic resource]. Proceedings of the XIII International scientific conference ''Differential equations and their applications in mathematical modeling''. (Saransk, July 12-16, 2017). Saransk: SVMO Publ, 2017. - pp. 55-66. Available at: http://conf.svmo.ru/files/deamm2017/papers/paper08.pdf. - Date of access: 24.06.2019.