IX INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN
CIVIL ENGINEERING
BOOK OF ABSTRACTS , 2024.год., стр. 19-19
MODELLING OF POROUS METALS BY RDA-PT MODEL| |
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| DOI: 10.14415/CACE2024.08 |
| UDK: 539.3/.4:669.018 |
| CC-BY-SA 4.0 license |
| Аутор : Milašinović, Dragan D.; Bursać, Smilja; Pančić, Aleksandar |
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| | Резиме: |
| | A theoretical model for porous viscoelastoplastic (VEP) materials is examined based on the principles of mass and energy conservation using rheological-dynamical analogy (RDA). The model provides the expressions for the creep coefficient, Poisson's ratio, modulus of elasticity, damage variable and strength as a function of porosity and/or void volume fraction (VVF). Compared with numerous versions of acoustic emission monitoring developed to analyse the behaviour of the total wave propagation in inhomogeneous media with density variation, the RDA is found to be comprehensive in interpretation and consistent with physical understanding. The reliability of the proposed rheological dynamic-percolation (RDA-PT) model is confirmed on metals by the comparison of numerical results with experimental ones. |
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| | Кључне речи: |
| | POROSITY, RDA-PT MODEL, WAVE PROPADATION, DENSITY VARIATION, CREEP EFFECTS, CRACKS |
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