TY - GEN
T1 - Subsonic interface crack with crack face contact
AU - Chen, Shaohua
AU - Xu, Guang
AU - Yan, Cong
PY - 2008
Y1 - 2008
N2 - A steady-state subsonic interface crack propagating between an elastic solid and a rigid substrate with crack face contact is studied. Two cases with respective to the contact length are considered, i.e., semi-infinite and finite crack face contact. Different from a stationary or an open subsonic interface crack, stress singularity at the crack tip in the present paper is found to be non-oscillatory. Furthermore, in the semi-infinite contact case, the singularity of the stress field near the crack tip is less than 1/2. In the finite contact case, no singularity exists near the crack tip, but less than 1/2 singularity does at the end of the contact zone. In both cases, the singularity depends on the linear contact coefficient and the crack speed. Asymptotic solutions near the crack tip are given and analyzed. In order to satisfy the contact conditions, reasonable region of the linear contact coefficient is found. In addition, the solution predicts a non-zero-energy dissipation rate due to crack face contact.
AB - A steady-state subsonic interface crack propagating between an elastic solid and a rigid substrate with crack face contact is studied. Two cases with respective to the contact length are considered, i.e., semi-infinite and finite crack face contact. Different from a stationary or an open subsonic interface crack, stress singularity at the crack tip in the present paper is found to be non-oscillatory. Furthermore, in the semi-infinite contact case, the singularity of the stress field near the crack tip is less than 1/2. In the finite contact case, no singularity exists near the crack tip, but less than 1/2 singularity does at the end of the contact zone. In both cases, the singularity depends on the linear contact coefficient and the crack speed. Asymptotic solutions near the crack tip are given and analyzed. In order to satisfy the contact conditions, reasonable region of the linear contact coefficient is found. In addition, the solution predicts a non-zero-energy dissipation rate due to crack face contact.
KW - Bimaterial interface
KW - Linear contact model
KW - Singularity
KW - Subsonic crack
UR - http://www.scopus.com/inward/record.url?scp=45749138415&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/amr.33-37.307
DO - 10.4028/www.scientific.net/amr.33-37.307
M3 - Conference contribution
AN - SCOPUS:45749138415
SN - 0878493999
SN - 9780878493999
T3 - Advanced Materials Research
SP - 307
EP - 314
BT - Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
PB - Trans Tech Publications
T2 - 7th International Conference on Fracture and Strength of Solids, FEOFS 2007
Y2 - 27 August 2007 through 29 August 2007
ER -