Simulation of Delamination Using Discontinuous Galerkin Finite Element Methods and Cohesive Models

Felicia Stan

doi:10.4028/www.scientific.net/KEM.417-418.501

Paper Titles

A Preliminary Approach to the Relationship between the Rockburst Proneness and the Spectrum Characteristic of Rock
p.485

Asymptotic Stress Field for a Crack Normal to a Ceramic–Metal Interface
p.489

Study on Simplified Test Method about Fatigue Performance of Cold Patch Asphalt Mixtures
p.493

Investigate of Performance of Asphalt Concrete with Gneiss
p.497

Simulation of Delamination Using Discontinuous Galerkin Finite Element Methods and Cohesive Models
p.501

Experiments and Strength Prediction of a Joint Composed of a Pultruded FRP Tube Bonded to an FRP Lamella
p.505

Vapor Pressure Modeling for Fire Damage Assessment of HPC
p.509

Inelastic Damage-Involved Response of Colliding Buildings during Earthquakes
p.513

Cohesive Release Loads in a General Finite Element Model of a Propagating Crack
p.517

HomeKey Engineering MaterialsKey Engineering Materials Vols. 417-418Simulation of Delamination Using Discontinuous...

Simulation of Delamination Using Discontinuous Galerkin Finite Element Methods and Cohesive Models

Abstract:

This paper presents a computational framework for simulation of delamination that combines the features of the discontinuous Galerkin methods with the versatility of the cohesive zone models. Within the finite element formulation of the discontinuous Galerkin methods, displacement discontinuities (jumps) are allowed across the element boundaries. Thus, the cracks are naturally included in the model without modifying the initial mesh. The displacement discontinuities across the element boundaries are used to compute the separations in the cohesive fracture law. The delamination initiation occurs when the traction across the element boundaries reaches its maximum; when the separation exceeds a critical value, total decohesion occurs. Numerical example is presented to illustrate the validity and effectiveness of the present methodology.