Open AccessReliability Computation of Heat-power Engine Structures Based on Finite Element Modeling
Author(s) -
Прозоровский,
A A Prozorovskiy,
Корецкий,
S. Koretskiy,
Шиверский,
E.A. Shiverskiy,
Европин,
S. V. Evropin,
Юрин,
Yu. Yurin,
Димитриенко,
Yu. I. Dimitrienko
Publication year - 2014
Publication title -
bezopasnostʹ v tehnosfere
Language(s) - English
Resource type - Journals
ISSN - 1998-071X
DOI - 10.12737/4939
Subject(s) - finite element method , reliability (semiconductor) , computation , durability , structural engineering , stress (linguistics) , computer science , process (computing) , power (physics) , mathematics , materials science , engineering , algorithm , physics , thermodynamics , linguistics , philosophy , database , operating system
The computational method was suggested for reliability of heat-power engine structures under continuous random in-process loads. The method is based on numerical statistical modeling of an in-process stress-strain state (SSS) of a structure with random characteristics of structural materials and computation of damage accumulation and durability of the structure under random stationary loadings. The chemical criterion of durable strength has been applied to calculate damage accumulation. The iteration method for a three-dimensional thermo-mechanics problem and the finite-element method have been used to compute the SSS of structures regarding creep. As an example of application of the developed method, computations for durability and reliability of two-layer cooled structure of a thermo-energetic power plant case have been conducted.