Open AccessModeling Fatigue Damage Accumulation in Power Engine Structures
Author(s) -
Yu. I. Dimitrienko,
Yu. Yurin,
A A Prozorovskiy
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1990/1/012058
Subject(s) - finite element method , reliability (semiconductor) , hull , creep , carbon fibers , computer science , ceramic , structural engineering , stress (linguistics) , work (physics) , mechanical engineering , materials science , power (physics) , composite number , engineering , composite material , algorithm , linguistics , physics , philosophy , quantum mechanics
The article describes the development of a new design technology for power engine structures (PES) hulls of increased reliability, based on the methods of system analysis using computer modeling of damage accumulation in structural elements, as well as the development of technical solutions for creating the PES hull design using new heat-resistant composite carbon-carbon and carbon-ceramic materials. To calculate the accumulation of damage, the chemical criteria of durable strength is used, for numerical calculation of the stress-strain state of structures taking into account creep, an iterative method for solving a three-dimensional problem of thermomechanics using the finite element method is applied. An example of the calculation of a high-pressure structural element, performed in the work, showed the possibility of practical implementation of the proposed technique and its effectiveness, in terms of reducing or replacing experimental studies to substantiate the reliability of structures.