Mechanical Behavior of Metallic Nanolaminate Composite Materials

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Mechanical Behavior of Metallic Nanolaminate
Composite Materials

• Pate Motter
• Advisor Dr. Douglas Spearot

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Project Idea

• Objective
• Using computer simulations to study the plastic
  deformation of nanolaminates
• Nanolaminates
• Copper-Nickel and Titanium-Aluminum
• Plastic Deformation
• Range of stress between elastic and fracture

www.colorado.edu
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Benefits

• Nanolaminates are not the sum of their parts
• Can be fine tuned for specific needs

Misra, A., Hirth, J.P. and Kung, H.
Foecke, T. and van Heerden, D.,Experimental
observations of deformation mechanisms in
metallic nanolaminates
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Methodology

• Molecular Dynamics
• Replaces intricate atom with single point of mass
• LAMMPS
• Large-scale Atomic/Molecular Massively Parallel
  Simulator
• Ensight

lammps.sandia.gov
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Trillion

• Statistics
• 48 Nodes
• 96 Processors
• 192 Gb of RAM
• 336 Gflops

hpc.uark.edu
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Goals

• The role interfaces have in the plastic
  deformation of nanolaminates
• Observing plastic deformation
• Tests
• Layer thickness
• Different amounts of each element
• Element Position

Spearot, D.E. Inelastic Behavior of Heterophase
Ti-Al and Ti-Al3Ti Nanolaminates