Deformation Diagrams of Metals with Different Types of Microstructure Damage

被引：0
|
作者：
Volkov, S. S. [1 ]
Volkova, T. A. [2 ]
机构：
[1] Russian Acad Sci, Inst Engn Sci, Ural Branch, 34 Komsornolskata St, Ekaterinburg 620219, Russia
[2] Ural State Univ Railway Transport, 66 Kolmogorova St, Ekaterinburg 620034, Russia
来源：
MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2016) | 2016年 / 1785卷
关键词：
D O I：
10.1063/1.4967148
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The damage of microstructure elements under load is considered in the form of voids and micro-porosities of varying extents. A two-level model of a material with random deformation and strength properties of microstructure elements is proposed. Methods of probability theory are applied. Moment functions of several distribution laws are used to characterize the micro-porosities. The degradation of material properties during the service life of the structure is taken into account. The relationship between the strains and the stresses becomes nonlinear. The stress-strain curve for a uniaxial tensile loading of a copper specimen is calculated and compared to experimental data. The influence of microstructure properties on the relationship between the strain and the stress of the material is demonstrated.
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页数：4
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