Fracture mechanical behaviour of visco-elastic materials: application to the so-called dwell-effect

NAESER B., KALISKE M., Dal H., NETZKER C.

ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK, vol.89, no.8, pp.677-686, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 89 Issue: 8
  • Publication Date: 2009
  • Doi Number: 10.1002/zamm.200800152
  • Journal Name: ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.677-686
  • Keywords: Material forces, fracture mechanics, visco-elastic material behaviour, MATERIAL FORCE METHOD, STRESS, MODEL, NETWORKS, DAMAGE
  • Middle East Technical University Affiliated: No

Abstract

The material force approach is an efficient, elegant, and accepted means to compute the J-integral as a fracture mechanical parameter for elastic and inelastic materials. With the formulation of a multiplicative split of the deformation gradient at hand, rate-dependent (visco-elastic) materials described for example by the physically based Bergstrom-Boyce model can be investigated. For these investigations, the so-called material volume forces have to be computed in order to separate the driving forces acting on the visco-elastic zone around the crack tip from the driving forces acting on the crack tip itself, representing the crack driving force. To illustrate the effectiveness of this approach, the so-called dwell-effect of elastomeric materials is investigated. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim