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Konstitutivno modeliranje materialov z upoštevanjem odvisnosti od napetostne troosnosti na osnovi elastičnega potenciala
ID Obid, Štefan (Author), ID Halilovič, Miroslav (Mentor) More about this mentor... This link opens in a new window

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Abstract
Karakterizacija mehanskih lastnosti materiala je ključna za razumevanje njegovega obnašanja pod različnimi obremenitvami in je osnova za izvajanje mehanskih simulacij. Pomembna je tako izbira konstitutivnega modela kot tudi mehanskih testov, na podlagi katerih je model kalibriran. Doktorsko delo obravnava oba vidika karakterizacije: prvi del predstavlja nov konstitutivni model za anizotropne materiale z nelinearnim odzivom in odvisnostjo od vrste obremenitvenega stanja, drugi del pa metodologijo, ki omogoča analitično določitev nateznega, tlačnega in strižnega odziva iz štiri-točkovnega upogibnega preizkusa.

Language:Slovenian
Keywords:materialni odziv, konstitutivno modeliranje, materialno testiranje, karakterizacija materiala, natezno-tlačna asimetrija, upogibni test
Work type:Doctoral dissertation
Typology:2.08 - Doctoral Dissertation
Organization:FS - Faculty of Mechanical Engineering
Publisher:[Š. Obid]
Year:2025
Number of pages:XXVI, 136 str.
PID:20.500.12556/RUL-168192 This link opens in a new window
UDC:531/534:52-334.2:620.1(043.3)
COBISS.SI-ID:231802883 This link opens in a new window
Publication date in RUL:02.04.2025
Views:790
Downloads:315
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Secondary language

Language:English
Title:Elastic potential based constitutive modelling of materials with consideration of stress triaxiality dependency
Abstract:
Characterization of the mechanical properties of a material is essential for understanding its behavior under various loads and is fundamental for conducting simulations. Both the selection of a constitutive model and the mechanical tests used for model calibration are crucial. This thesis addresses both aspects of characterization: the first part presents a new constitutive model for anisotropic materials with a nonlinear response and dependence on loading condition type, while the second part provides a methodology for analytical extraction of the tensile, compressive, and shear responses from a four-point bending test.

Keywords:material response, constitutive modeling, material testing, material characterisation, tension-compression asymmetry, bending test

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