Computational Mechanics

, Volume 38, Issue 3, pp 235–249

Meshfree simulations of thermo-mechanical ductile fracture

Article

DOI: 10.1007/s00466-005-0744-8

Cite this article as:
Simkins, D. & Li, S. Comput Mech (2006) 38: 235. doi:10.1007/s00466-005-0744-8

Abstract

In this work, a meshfree method is used to simulate thermo-mechanical ductile fracture under finite deformation. A Galerkin meshfree formulation incorporating the Johnson-Cook damage model is implemented in numerical computations. We are interested in the simulation of thermo-mechanical effects on ductile fracture under large scale yielding. A rate form adiabatic split is proposed in the constitutive update. Meshfree techniques, such as the visibility criterion, are used to modify the particle connectivity based on evolving crack surface morphology. The numerical results have shown that the proposed meshfree algorithm works well, the meshfree crack adaptivity and re-interpolation procedure is versatile in numerical simulations, and it enables us to predict thermo-mechanical effects on ductile fracture.

Keywords

Damage Ductile Fracture Johnson-Cook model Meshfree method Thermo-mechanical coupling 

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  1. 1.Department of Civil and Environmental EngineeringUniversity of South FloridaTampaUSA
  2. 2.Department of Civil and Environmental EngineeringUniversity of CaliforniaBerkeleyUSA