منابع مشابه
Similarity Relationships in Creep Contacts and Applications in Nanoindentation Tests
The study of indentation responses of rate-dependent (viscoplastic or creeping) solids has generally focused on the relationship between indentation hardness and an effective strain rate, which can be defined from a similarity transformation of the governing equations. The strain rate sensitivity exponent can be determined from the slope of a log-log plot of the hardness versus effective strain...
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Nanoindentation processes in single crystal Ag thin film under different crystallographic orientations and various indenter widths are simulated by the quasicontinuum method. The nanoindentation deformation processes under influences of crystalline anisotropy and indenter size are investigated about hardness, load distribution, critical load for first dislocation emission and strain energy unde...
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Attempts to understand the mechanical behavior of dentin and other mineralized tissues have been primarily focused on the role of their more abundant matrix components, such as collagen and hydroxyapatite. The structural mechanisms endowing these biological materials with outstanding load bearing properties, however, remain elusive to date. Furthermore, while their response to deformation has b...
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We address the question of whether results obtained for small indenters scale to indenter sizes in the experimental range. The quasicontinuum method is used in order to extend the computational cell size to 2x2x1 micro m(3), nominally containing of order 2.5x10(11) atoms, and in order to permit consideration of indenter radii in the range 70-700 A. The dislocation structures for the large inden...
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ژورنال
عنوان ژورنال: Journal of Materials Research
سال: 2004
ISSN: 0884-2914,2044-5326
DOI: 10.1557/jmr.2004.0063