Povzetek
Conventionally, plastic anisotropy is calibrated by using standard uniaxial tensile and biaxial test results. Alternatively, heterogeneous strain field specimens in combination with full-field measurements can be used for this purpose. As reported by the literature, such an approach reduces the number of required tests enormously, but it is challenging to obtain reliable results. This paper presents an alternative methodology, which represents a compromise between the conventional and heterogeneous strain field calibration technique. The idea of the method is to use simple tests, which can be conducted on the uniaxial testing machine, and to avoid the use of advanced measuring equipment. The procedure is accomplished by conducting standard tensile tests, which are simple and reliable, and by a novel heterogeneous strain field tensile test, to calibrate the biaxial stress state. Moreover, only two of the parameters required for full characterisation need to be inversely identified from the test response; the other parameters are directly determined from the uniaxial tensile test results. This way, a dimension of optimization space is reduced substantially, which increases the robustness and effectiveness of the optimization algorithm.
Ključne besede
plasticity;biaxial testing;numerical simulation;identification;full-field measurement;YLD2000-2d;
Podatki
Jezik: |
Angleški jezik |
Leto izida: |
2020 |
Tipologija: |
1.01 - Izvirni znanstveni članek |
Organizacija: |
UL FS - Fakulteta za strojništvo |
UDK: |
621.713.3:004.942(045) |
COBISS: |
17170459
|
ISSN: |
2075-4701 |
Št. ogledov: |
229 |
Št. prenosov: |
56 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Slovenski jezik |
Sekundarne ključne besede: |
plastičnost;numerične simulacije;identifikacija;dvoosno preizkušanje; |
Vrsta dela (COBISS): |
Članek v reviji |
Strani: |
str. 1-17 |
Letnik: |
ǂiss. ǂ4 |
Zvezek: |
ǂVol. ǂ10 |
Čas izdaje: |
2020 |
DOI: |
10.3390/met10040542 |
ID: |
14083846 |