Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Horstemeyer, F. Mark

Committee Member

Gullett, M. Philip

Committee Member

German, M. Randall

Committee Member

Daniewicz, R. Steven

Committee Member

Hammi, Youssef

Date of Degree

5-1-2006

Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science

College

James Worth Bagley College of Engineering

Department

Department of Mechanical Engineering

Abstract

Molecular dynamics simulations using the Embedded Atom Method were performed to describe the interparticle behavior of two single crystal spherical nickel nanoparticles during compaction based on applied strain rate, particle size, contact angle, and crystal orientation. The evolution of the contact surfaces was analyzed during the molecular dynamics simulation and an investigation of friction effects was conducted at the contact surfaces. The results from the current study were validated by comparing them to previous nanocrystalline research on bulk particle deformation and to previous studies of elasto-plastic contact laws between two macroscale spherical particles. These quantified friction effects give a better understanding of nanoparticle behavior and will be used to develop constitutive equations for larger scale models, such as finite element analysis.

URI

https://hdl.handle.net/11668/15230

Comments

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