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http://dx.doi.org/10.3740/MRSK.2004.14.6.436

Deformation Behaviors of Materials during Nanoindentation Test and Simulation by Three-Dimensional Finite Element Analysis  

Kim Ji-soo (Department of Materials Engineering, Graduate School, Kyungnam University)
Yang Hyeon-yun (Department of Mechanical Design Engineering, Graduate School, Kyungnam University)
Yun Jon-do (Department of Advanced Materials Engineering, Kyungnam University)
Cho Sang-bong (Department of Mechnical Automation Engineering, Kyungnam University)
Publication Information
Korean Journal of Materials Research / v.14, no.6, 2004 , pp. 436-442 More about this Journal
Abstract
Elastic and plastic deformation behaviors of the high purity aluminum and the silica glass were studied using nanoindentation and finite element analysis(FEA) techniques. Berkovich- and cone-type indenters were used for the nanoindentation test. Deformation behaviors and nanoindent profiles of elastic, elastic-plastic or plastic materials were clearly visualized by FEA simulation. Effects of the penetration depth and strain hardening on the deformation behavior were examined. Pile-up and sink-in behaviors were studied by using FEA technique. Degree of pile-up or sink-in was found to be a function of the ratio of elastic modulus to yield strength of materials. FEA was found to be an effective method to study deformation behaviors of materials under nanoindentation, especially in the case when pile-up or sink-in phenomena occurred.
Keywords
nanoindentation; finite element analysis; pile-up; sink-in; deformation profile;
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