Improvement of an Ellipsoidal Void Model for Simulating Ductile Fracture Behavior

Kazutake Komori

doi:10.4028/www.scientific.net/KEM.577-578.93

Paper Titles

Effect of Crystallinity on Mechanical Properties of Carbon Fiber Reinforced Polypropylene
p.77

Mechanical Characterization of Bamboo Fiber-Reinforced Green Composites
p.81

Characterization of Al Metal Matrix Composites Produced by the Stir-Casting Method
p.85

Fatigue Strength of Aluminum Cast Alloy in Plant Oil
p.89

Improvement of an Ellipsoidal Void Model for Simulating Ductile Fracture Behavior
p.93

Fracture Toughness of Advanced TRIP-Aided Martensitic Steels
p.97

Probabilistic Failure Analysis of Steel Structures Exposed to Fatigue
p.101

Strength Analysis of Energy Storage Flywheel Wrapped with Composite Material
p.105

Green's Function Solution of Multiple Shallow-Buried Cavities and Inclusions in Elastic Semi-Space
p.109

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Improvement of an Ellipsoidal Void Model for Simulating Ductile Fracture Behavior

Abstract:

An ellipsoidal void model for simulating ductile fracture behavior was proposed by the author [K. Komori: Mech. Mater., Vol. 60 (2013), p. 36]. The nominal fracture strain calculated from this model is slightly larger than that calculated from the finite-element void cell when the initial void volume fraction is specified. To decrease the difference, an assumption must be made that the deformation gradient of the void does not coincide with that of the matrix. This study proposes a simple relationship between the two deformation gradients that produces agreement between the nominal fracture strain calculated using the ellipsoidal void model and that using the finite-element void cell.