University of Illinois at Urbana-Champaign
A Numerical Study of the Influence of Void Growth on Ductile Fracture and Metal Extrusion
Abstract
dc:descriptionLarge deformation finite element analysis is used to study the near crack tip growth of long cylindrical holes aligned parallel to the plane of a mode I plane strain crack. The near crack tip stress and deformation fields are analyzed. The results show that the holes are pulled towards the crack tip and change their shape to approximately elliptical with the major axis radial to the crack. Several crack-hole coalescence criteria are discussed and estimates for the conditions for fracture initiation are given and compared with experimental results. The range of estimates now available from finite element calculations coincides quite well with the range of experimental data for materials containing inclusions which are only loosely bonded to the matrix.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Theoretical and Applied Mechanics
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2014
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Aravas, Nikolaos
Subjects
dc:subject × 1Identifiers
dc:identifier.*- Identifier
- (UMI)AAI8711766
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/71692