Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Deformation Behaviors of Materials during Nanoindentation Test and Simulation by Three-Dimensional Finite Element Analysis

재료의 나노인덴테이션 변형 거동과 3차원 유한요소해석

  • 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)
  • 김지수 (경남대학교 대학원 재료공학과) ;
  • 양현윤 (경남대학교 대학원 기계설계학과) ;
  • 윤존도 (경남대학교 신소재공학부) ;
  • 조상봉 (경남대학교 기계자동화공학부)
  • Published : 2004.06.01
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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.

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References

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