Abstract
In this work, the fatigue life of an interfacial cracked plate is evaluated in the presence of flaws by homogenized extended isogeometric analysis (XIGA). In XIGA, the crack faces are modeled by discontinuous Heaviside jump functions, whereas the singularity in the stress field at the crack tip is modeled by crack tip enrichment functions. Holes and inclusions are modeled by Heaviside function and distance function respectively. The discontinuities are modeled in a selected region near the major crack whereas the region away from the crack is modeled by an equivalent homogeneous material. The stress intensity factors (SIFs) for the interface cracks are numerically evaluated using the domain based interaction integral approach. Paris law of fatigue crack growth is employed for computing the fatigue life of an interfacial cracked plate. The results show that the defects/ discontinuities away from the main crack barely influence the fatigue life.
| Original language | English |
|---|---|
| Journal | Theoretical and Applied Fracture Mechanics |
| DOIs | |
| Publication status | Accepted/In press - 2015 Dec 20 |
| Externally published | Yes |
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Keywords
- Fatigue life
- Holes
- Homogenized XIGA
- Inclusions
- Interfacial cracks
ASJC Scopus subject areas
- Applied Mathematics
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
Cite this
Fatigue crack growth analysis of an interfacial crack in heterogeneous materials using homogenized XIGA. / Bhardwaj, G.; Singh, S. K.; Singh, I. V.; Mishra, B. K.; Rabczuk, Timon.
In: Theoretical and Applied Fracture Mechanics, 20.12.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fatigue crack growth analysis of an interfacial crack in heterogeneous materials using homogenized XIGA
AU - Bhardwaj, G.
AU - Singh, S. K.
AU - Singh, I. V.
AU - Mishra, B. K.
AU - Rabczuk, Timon
PY - 2015/12/20
Y1 - 2015/12/20
N2 - In this work, the fatigue life of an interfacial cracked plate is evaluated in the presence of flaws by homogenized extended isogeometric analysis (XIGA). In XIGA, the crack faces are modeled by discontinuous Heaviside jump functions, whereas the singularity in the stress field at the crack tip is modeled by crack tip enrichment functions. Holes and inclusions are modeled by Heaviside function and distance function respectively. The discontinuities are modeled in a selected region near the major crack whereas the region away from the crack is modeled by an equivalent homogeneous material. The stress intensity factors (SIFs) for the interface cracks are numerically evaluated using the domain based interaction integral approach. Paris law of fatigue crack growth is employed for computing the fatigue life of an interfacial cracked plate. The results show that the defects/ discontinuities away from the main crack barely influence the fatigue life.
AB - In this work, the fatigue life of an interfacial cracked plate is evaluated in the presence of flaws by homogenized extended isogeometric analysis (XIGA). In XIGA, the crack faces are modeled by discontinuous Heaviside jump functions, whereas the singularity in the stress field at the crack tip is modeled by crack tip enrichment functions. Holes and inclusions are modeled by Heaviside function and distance function respectively. The discontinuities are modeled in a selected region near the major crack whereas the region away from the crack is modeled by an equivalent homogeneous material. The stress intensity factors (SIFs) for the interface cracks are numerically evaluated using the domain based interaction integral approach. Paris law of fatigue crack growth is employed for computing the fatigue life of an interfacial cracked plate. The results show that the defects/ discontinuities away from the main crack barely influence the fatigue life.
KW - Fatigue life
KW - Holes
KW - Homogenized XIGA
KW - Inclusions
KW - Interfacial cracks
UR - http://www.scopus.com/inward/record.url?scp=84965047854&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84965047854&partnerID=8YFLogxK
U2 - 10.1016/j.tafmec.2016.04.004
DO - 10.1016/j.tafmec.2016.04.004
M3 - Article
AN - SCOPUS:84965047854
JO - Theoretical and Applied Fracture Mechanics
JF - Theoretical and Applied Fracture Mechanics
SN - 0167-8442
ER -