TY  - JOUR
AU  - Persson, Bo
TI  - A simple model for viscoelastic crack propagation
JO  - The European physical journal / E
VL  - 44
IS  - 1
SN  - 1292-8941
CY  - Heidelberg
PB  - Springer
M1  - FZJ-2021-06104
SP  - 3
PY  - 2021
AB  - When a crack propagates in a viscoelastic solid, energy dissipation can occur very far from the crack tip where the stress field may be very different from the r−1/2 singular form expected close to the crack tip. Most theories of crack propagation focus on the near crack tip region. Remarkable, here I show that a simple theory which does not account for the nature of the stress field in the near crack tip region results in a crack propagation energy in semiquantitative agreement with a theory based on the stress field in the near crack tip region. I consider both opening and closing crack propagation and show that for closing crack propagation in viscoelastic solids, some energy dissipation processes must occur in the crack tip process zone. The theory is illustrated by new experimental results for the adhesive interaction between a silica glass ball and a silicone rubber surface.
LB  - PUB:(DE-HGF)16
C6  - 33570714
UR  - <Go to ISI:>//WOS:000617200700001
DO  - DOI:10.1140/epje/s10189-020-00001-w
UR  - https://juser.fz-juelich.de/record/904534
ER  -