| Naslov: | Micromechanical analysis of constraint effect on fracture initiation in strength mis-matched welded joints |
|---|
| Avtorji: | ID Dobrojević, Miloš (Avtor)
ID Rakin, Marko (Avtor)
ID Gubeljak, Nenad (Avtor)
ID Cvijović, I. (Avtor)
ID Zrilić, Milorad (Avtor)
ID Krunich, N. (Avtor)
ID Sedmak, Aleksandar (Avtor) |
|---|
| Datoteke: |  http://www.scientific.net/0-87849-441-3/571/
|
|---|
| Jezik: | Angleški jezik |
|---|
| Vrsta gradiva: | Neznano |
|---|
| Tipologija: | 1.01 - Izvirni znanstveni članek |
|---|
| Organizacija: | FS - Fakulteta za strojništvo
|
|---|
| Opis: | In this paper the micromechanical approach to ductile fracture was applied in a study of constraint effect crack growth initiation in mismatched welded joints. The single edged- notched bend specimens (precrack length ▫$a_o/W=0.32$▫) were experimentally and numerically analysed. The coupled micromechanical model prposed by Gurson, Tvergaard and Needleman was used. Constraint effect was tested by varying widths of the welded joints (6, 12 and 18 mm). HSLA steel was used as the base metal in a quenched and tempered condition. The flux-cored arx-welding process in shielding gas was used. Two different fillers were selected to obtain over- and undermatched weld metal. The micromechanical parameters used in prediction of the crack growth initiation on precracked specimen were calibrated on a round smmoth specimen. The difference in fracture behaviour between over- and undermatched welded joints obtained in experimental results was followed by numerical computationsof void volume fraction in front of the crack tip. |
|---|
| Ključne besede: | fracture mechanics, ductile fracture, high strength low alloyed steel, cracks, micromechanical model, mismatched welded joints, constraint effect, void growth |
|---|
| Leto izida: | 2007 |
|---|
| PID: | 20.500.12556/DKUM-27471  |
|---|
| UDK: | 620.1/2:539.42 |
|---|
| COBISS.SI-ID: | 11140630 |
|---|
| ISSN pri članku: | 0255-5476 |
|---|
| NUK URN: | URN:SI:UM:DK:9GATA354 |
|---|
| Datum objave v DKUM: | 01.06.2012 |
|---|
| Število ogledov: | 2239 |
|---|
| Število prenosov: | 124 |
|---|
| Metapodatki: |    |
|---|
| Področja: | Ostalo
|
|---|
|
:
|
Kopiraj citat |
|---|
| | | | Skupna ocena: | (0 glasov) |
|---|
| Vaša ocena: | Ocenjevanje je dovoljeno samo prijavljenim uporabnikom. |
|---|
| Objavi na: |  |
|---|
Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše
podrobnosti ali sproži prenos. |
