TY - RPRT
T1 - Crack Tip Parameters for Growing Cracks in Linear Viscoelastic Materials
AU - Brincker, Rune
N1 - PDF for print: 18 pp.
Presented at the Conference on Localized Damage, Portsmouth, UK, June 26-28, 1990
PY - 1990
Y1 - 1990
N2 - In this paper the problem of describing the asymptotic fields around a slowly growing crack in a linearly viscoelastic material is considered. It is shown that for plane mixed mode problems the asymptotic fields must be described by 6 parameters: 2 stress intensity factors and 4 deformation intensity factors. In the special case of a constant Poisson ratio only 2 deformation intensity factors are needed. Closed form solutions are given both for a slowly growing crack and for a crack that is suddenly arrested at a point at the crack extension path. Two examples are studied; a stress boundary value problem, and a displacement boundary value problem. The results show that the stress intensity factors and the displacement intensity factors do not depend explicitly upon the velocity of the crack tip.
AB - In this paper the problem of describing the asymptotic fields around a slowly growing crack in a linearly viscoelastic material is considered. It is shown that for plane mixed mode problems the asymptotic fields must be described by 6 parameters: 2 stress intensity factors and 4 deformation intensity factors. In the special case of a constant Poisson ratio only 2 deformation intensity factors are needed. Closed form solutions are given both for a slowly growing crack and for a crack that is suddenly arrested at a point at the crack extension path. Two examples are studied; a stress boundary value problem, and a displacement boundary value problem. The results show that the stress intensity factors and the displacement intensity factors do not depend explicitly upon the velocity of the crack tip.
KW - Viscoelastic Materials
KW - Crack Growth
KW - Stress Intensity Factors
KW - Deformation Intensity Factors
KW - Stress Boundary Value Problems
KW - Displacement Boundary Problems
KW - Rate Sensitivity
KW - Viscoelastic Materials
KW - Crack Growth
KW - Stress Intensity Factors
KW - Deformation Intensity Factors
KW - Stress Boundary Value Problems
KW - Displacement Boundary Problems
KW - Rate Sensitivity
M3 - Report
T3 - Fracture and Dynamics
BT - Crack Tip Parameters for Growing Cracks in Linear Viscoelastic Materials
PB - Dept. of Building Technology and Structural Engineering, Aalborg University
CY - Aalborg
ER -