A Numerical Study of Combined Rate, Size and Thermal Effects on the Responses of Ultrananocrystalline Diamond |
| Journal |
Key Engineering Materials (Volumes 334 - 335) |
| Volume |
Advances in Composite Materials and Structures |
| Pages |
621-624 |
| DOI |
10.4028/www.scientific.net/KEM.334-335.621 |
| Online since |
March, 2007 |
| Authors |
Lu Ming Shen,
Zhen Chen
|
| Keywords |
Grain Boundary, Molecular Dynamics, Rate Effect, Size Effect, Thermal Effects, Ultrananocrystalline Diamond |
| Abstract |
To better understand the responses of ultrananocrystalline diamond (UNCD) under
extreme working conditions, a numerical study is performed to investigate the size, loading rate and
thermal effects on the material properties of UNCD films. A combined kinetic Monte Carlo (KMC)
and molecular dynamics (MD) method is first applied to simulate the growth of polycrystalline
UNCD films. The responses of the resulting UNCD films with various grain sizes are then
investigated by applying displacement–controlled tensile loading with different rates and
temperatures in the MD simulations. The preliminary results presented in this paper provide a better
understanding of the combined size, rate and thermal effects on the material properties of UNCD. |
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