Tomičević, Zvonimir and Hild, François and Kodvanj, Janoš and Roux, Stéphane (2013) Validation of elastic and identification of plastic parameters of Johnson-Cook law using DIC. = Validation of elastic and identification of plastic parameters of Johnson-Cook law using DIC. In: 30th Danubia-Adria Symposium on Advances in Experimental Mechanics, 25.–28. 09. 2013., Primošten, Hrvatska.
Full text not available from this repository.Abstract
Nowadays, the identification and validation of constitutive laws with a high degree of reliability is an important demand from industry so as to apprehend safety factors in a rational manner. Full-field measurement techniques open the way to such an efficient and secure determination of constitutive parameters. In the present case, nodular graphite cast iron was chosen as the studied material. In this paper the identification of plastic parameters of Johnson-Cook law is performed from the analysis of biaxial tests. Two different loading paths are considered, namely, proportional equibiaxial and non-proportional "snail" histories. During the tests, images of the region of interest are taken. Displacement fields are measured via Digital Image Correlation (DIC). Boundary values of this measured displacement are prescribed in a FE modeling of the same test. Minimizing the difference between the measured and simulated displacement fields by tuning the plastic parameters is the strategy followed herein to identify the quasi-static part of Johnson-Cook’s law.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | identification, elasto-plastic behaviour, regularisation, digital image correlation, biaxial experiment |
| Subjects: | TECHNICAL SCIENCE > Mechanical Engineering |
| Divisions: | 200 Department of Engineering Mechanics > 220 Chair of Experimental Mechanics |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 22 Apr 2016 10:39 |
| Last Modified: | 23 Nov 2016 10:51 |
| URI: | http://repozitorij.fsb.hr/id/eprint/5743 |
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