Spherical Indentation 실험을 이용한재료 소성 물성치 측정방법A Method of Measuring the Plastic Properties of Materialsusing Spherical Indentation
- Other Titles
- A Method of Measuring the Plastic Properties of Materialsusing Spherical Indentation
- Authors
- 이광하; 강윤식; Xi Chen; 박대효
- Issue Date
- Aug-2010
- Publisher
- 한국전산구조공학회
- Keywords
- spherical indentation; reverse analysis; plastic property; FEM analysis; spherical indentation; reverse analysis; plastic property; FEM analysis; 구형 인덴테이션; 역 해석방법; 재료 소성치; 유한요소법
- Citation
- 한국전산구조공학회논문집, v.23, no.4, pp.353 - 360
- Indexed
- KCI
- Journal Title
- 한국전산구조공학회논문집
- Volume
- 23
- Number
- 4
- Start Page
- 353
- End Page
- 360
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/174298
- ISSN
- 1229-3059
- Abstract
- In this paper, an efficient algorithm is established in order to estimate the plastic properties of power-law hardening bulk specimen materials with one simple spherical indentation impression test. This work is based on a new formulation of representative strain and, therefore, compare to the preceding approaches the fitting parameters are significantly reduced. Moreover, the new definition of representative strain endowed more physical meaning to the representative strain.
In order to verify the reliability of the reverse analysis, we have studied a broad set of materials whose property ranges cover essentially all engineering metals and alloys. Based on the indentation force-displacement curves obtained from numerical simulations, the characteristics of the indentation response and material elastoplastic properties are bridged via explicit functions. Next, through the procedure of reverse analysis the yield stress and power-law hardening exponent of bulk specimen materials can be determined. Finally, good agreement between the result from reverse analysis and initial input data from experiment can be observed.
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Collections - 서울 공과대학 > 서울 건설환경공학과 > 1. Journal Articles
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