Advisor

Horstemeyer, Mark F.

Committee Member

Berry, John T.

Committee Member

Daniewicz, Steven R.

Committee Member

Gullett, Philip M.

Date of Degree

1-1-2004

Document Type

Graduate Thesis - Open Access

Major

Mechanical Engineering

Degree Name

Master of Science

College

College of Engineering

Department

Department of Mechanical Engineering

Abstract

A mulitscale approach is used to model the coalescence of voids. At the microscale, cylindrical and spherical voids in nickel and the magnesium alloy AM60 are simulated through finite element analyses. The nickel cylindrical void simulations are compared to a set of experiments to validate this micromechanical finite element approach used to study void coalescence. At the macroscale, the coalescence portion of a microstructure-property material model is modified to reflect the behavior of three-dimensional spherical voids using results from the micromechanical simulations. An analysis of an automotive component illustrates the influence of void coalescence at the structural scale.

URI

https://hdl.handle.net/11668/19189

Comments

mathematical model||plasticity||coalescence||ductile fracture

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