Continual damage model and its implementation for solving the problems of fatigue durability and long-term strength in materials and structures

A possible version of a model describing degradation of initial strength properties of structural alloys affected by fatigue and creep is introduced, based on the modern viewpoint of mechanics of damaged media (MDM). Processes of viscoplastic deformation and damage accumulation in structural alloys...

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Bibliographic Details
Main Authors: Volkov, Ivan A., Igumnov, Leonid A., Litvinchuk, Svetlana Yu, Volkov, Andrey I., Smetanin, Ilya V.
Format: Conference Proceeding
Language:English
Subjects:
Creep (materials)
Damage accumulation
Damage assessment
Deformation
Mathematical analysis
Metal fatigue
Stress relaxation
Structural damage
Tensors
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Summary:A possible version of a model describing degradation of initial strength properties of structural alloys affected by fatigue and creep is introduced, based on the modern viewpoint of mechanics of damaged media (MDM). Processes of viscoplastic deformation and damage accumulation in structural alloys are analyzed using numerical modeling. Special attention is paid to modeling the processes of viscoplastic deformation and damage accumulation for complex deformation processes accompanied by the rotation of main stress and strain tensor areas. New qualitative and quantitative features of the failure process are noted, which are connected with stressed-strained state history, damage degree, stress relaxation and other factors.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0003571