Predicting Time-Dependent Interfacial Behavior with a Viscoelastic Cohesive Zone Model

Conference · Mon Aug 21 00:00:00 EDT 2000

OSTI ID:758911

J. W. Foulk, SNL/CA; D. H. Allen, Texas A&M Univ

A time-dependent cohesive zone model is employed to model adhesive failure and grain-boundary cracking. Through the incorporation of viscoelasticity and evolving damage, the viscoelastic cohesive zone model (VCZM) yields a time-dependent critical energy release rate. A double-cantilever beam configuration is investigated. Crack growth curves are presented for the Xu-Needleman and VCZM model. In addition, a fifty-five grain polycrystal is simulated in compression. Time-dependent grain boundary prying and sliding result in inter-granular separation parallel to the major axis of loading.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 758911
• Report Number(s): SAND2000-8772C; TRN: AH200029%%147
• Resource Relation: Conference: International Conference on Computational Engineering & Sciences, Los Angles, CA (US), 08/21/2000--08/25/2000; Other Information: PBD: 21 Aug 2000
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ADHESIVES
CRACK PROPAGATION
FAILURES
MATHEMATICAL MODELS
INTERFACES
GRAIN BOUNDARIES
ELASTICITY
STRUCTURAL BEAMS