Naslov
Statistical analysis of different mathematical models for stress-strain curves of AISI 321 stainless steel
(Statistical analysis of different mathematical models for stress-strain curves of AISI 321 stainless steel)

Autori
Cumin, Josip ; Novoselović, Daniel ; Samardžić, Mijat ; Samardžić, Iva

Izvornik
Metalurgija (0543-5846) 62 (2023), 3-4; 391-393

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
AISI 321, true stress, true strain, mathematical model, statistical analysis

Sažetak
This paper presents statistical analysis of data obtained by uniaxial tensile testing of AISI 321 stainless steel. This data is required as material input in numerical software such as Abaqus, Ansys, MSC Marc, Nastran, ets. This data can be provided in the software as a set of points (piecewise linear model) that is cumbersome to enter, or it can be provided as mathematical model, in the case of which the Finite Element Method (FEM) sotware calculates desired points directly from the mathematical model. Various mathematical models can be used to approximate tensile test data depending on the material loading state (linear, elasto-plastic, plastic). In this paper, the same uniaxial test data is analyzed, and curve fitting parameters are shown for each mathematical model.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA