Numerical modeling and analysis of dynamic crack propagation in rubber
2013 (English)In: 13th International Conference on Fracture 2013, ICF 2013: Volume 5, 2013, Chinese Society of Theoretical and Applied Mechanics , 2013, 3598-3607 p.Conference paper (Refereed)
Dynamic crack propagation in rubber is modeled and analyzed numerically using the finite element method. The problem of a suddenly initiated crack at the center of stretched sheet is studied under plane stress conditions. A nonlinear finite element analysis using implicit time integration scheme is used. The bulk material behavior is described by finite-viscoelasticity theory and the fracture separation process is characterized using a cohesive zone model with a bilinear traction-separation law. Hence, the numerical model is able to model and predict the different contributions to the fracture toughness, i.e. the surface energy, viscoelastic dissipation, and inertia effects. The separation work per unit area and the cohesive strength has been parameterized, and their influence on the separation process has been investigated. A steadily propagating crack is obtained and the corresponding crack tip position and velocity history as well as the steady crack propagation velocity are evaluated and compared with the experimental data. A minimum threshold stretch of 3.0 is required for crack propagation. The numerical model is able to predict the dynamic crack growth such that the strength and the surface energy vary with the crack speed.
Place, publisher, year, edition, pages
Chinese Society of Theoretical and Applied Mechanics , 2013. 3598-3607 p.
Cohesive zone, Crack, Dynamic fracture, Rubber, Viscoelasticity, Crack propagation, Crack tips, Elasticity, Finite element method, Fracture, Interfacial energy, Numerical models, Separation, Cohesive zones, Crack propagation velocities, Dynamic crack propagation, Dynamic fractures, Implicit time integration, Non-linear finite-element analysis, Numerical modeling and analysis, Viscoelastic dissipation, Cracks
IdentifiersURN: urn:nbn:se:kth:diva-147262ScopusID: 2-s2.0-84898789138OAI: oai:DiVA.org:kth-147262DiVA: diva2:729626
13th International Conference on Fracture 2013, ICF 2013; Beijing; China; 16 June 2013 through 21 June 2013
QC 201406262014-06-262014-06-252015-12-03Bibliographically approved