On the Scale-Transition in Multiscale Modeling of Ductile Damage

Tomislav Lesičar; Jurica Sorić; Zdenko Tonković

doi:10.4028/www.scientific.net/KEM.754.226

Paper Titles

The Influence of Prefabricated Crack with Bias Angle on the Material’s Fracture Toughness
p.210

Shear Mode Stress Intensity Factors for Serrated Crack Fronts
p.214

Numerical Computation of Stress Intensity Factors in Ultrasonic Very-High-Cycle Fatigue Tests
p.218

Prediction of Elastic Properties of 3D4d Braided Composite Based on Hybrid Model
p.222

On the Scale-Transition in Multiscale Modeling of Ductile Damage
p.226

A Grain-Scale Model of Inter-Granular Stress Corrosion Cracking in Polycrystals
p.230

A Finite Element Based Analysis of Double Strap Bonded Joints with CFRP and Aluminium
p.237

RETRACTED: A Study on the Fatigue Behavior of Hot Dip Galvanized Steel Connections
p.241

RETRACTED: Fatigue Strength of Hot-Dip Galvanized Welded Steel Connections
p.244

HomeKey Engineering MaterialsKey Engineering Materials Vol. 754On the Scale-Transition in Multiscale Modeling of...

On the Scale-Transition in Multiscale Modeling of Ductile Damage

Abstract:

The standard numerical methods cannot adequately capture damage response of ductile heterogeneous materials, since they are unable to encompass the governing microstructural mechanisms. This issue is resolved by the multiscale approach, where the coarse scale problem incorporates behavior at the lower scales. In this paper, a multiscale scheme is employed for scaling of ductile damage occurring at the microstructural level to the macrolevel. A nonlocal implicit damage model is applied on the RVE, while a scale transition is performed by means of the first-order homogenization scheme. The influence of the boundary conditions used at the microscale on the macroscale response, as well as physical consistency of the RVE mechanical behavior are tested. It has been shown that displacement boundary conditions inhibit development of the softening band inside of the RVE and induce artificial material stiffness. The derived algorithms are embedded into the finite element software ABAQUS.