Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.11a
- /
- Pages.185-192
- /
- 2000
A Novel Indentation Theory Based on Incremental Plasticity Theory
증분소성이론에 준한 새 압입이론
- Published : 2000.11.02
Abstract
A novel indentation theory is proposed by examining the data from the incremental plasticity theory based finite element analyses. First the optimal data acquisition location is selected, where the strain gradient is the least and the effect of friction is negligible. This data acquisition point increases the strain range by a factor of five. Numerical regressions of obtained data exhibit that strain hardening exponent and yield strain are the two main parameters which govern the subindenter deformation characteristics. The new indentation theory successfully provides the stress-strain curve with an average error less than 3%.
Keywords
- Spherical Indenter;
- Effective Stress-strain Curve;
- Optimal Data Acquisition Location;
- Constraint Factor;
- Strain-hardening Exponent;
- Yield Strain;
- FEM;
- Deformation and Incremental Plasticity Theory
- 구형압입자;
- 유효응력-변형률 곡선;
- 최적자료수집위치;
- 구속인자;
- 변형경화지수;
- 항복변형률;
- 유한요소해석;
- 변형 및 증분소성이론;