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To Forecasting Residual Lifetime of Damaged Constructions under Shock Impacts in Operation

  • EXPERIMENTAL MECHANICS, DIAGNOSTICS, AND TESTING
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Abstract

A methodology for simulating mathematically the limit states of machines and structures subjected to quasi-static operational and shock impacts is generated by considering great (final) deformations and degradation of the properties of materials. The known experimental results and the modern mesomechanics conceptions on the structure, damage, and nonlinear processes of viscous-plastic faults of polycrystalline metals under high temperatures and loading rates are the basis of the mathematical models used. The results of simulation of a preliminarily loaded stripe with a cut in the area where two different materials are joined and which is subjected to shock impact are presented. Such bimetallic joints are typical for structures widely used in technical engineering, and they are of particular attention under operation. How the parameters of quasi-static loading and degradation of material properties influence the wave processes of deformation and the limit states important for lifetime estimation are shown.

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Authors and Affiliations

  1. Blagonravov Institute of Mechanical Engineering, Russian Academy of Sciences, 101990, Moscow, Russia

    V. A. Petushkov

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  1. V. A. Petushkov
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Correspondence to V. A. Petushkov.

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Petushkov, V.A. To Forecasting Residual Lifetime of Damaged Constructions under Shock Impacts in Operation. J. Mach. Manuf. Reliab. 49, 159–169 (2020). https://doi.org/10.3103/S1052618820020119

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  • DOI: https://doi.org/10.3103/S1052618820020119

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