Study of Anisotropic Elastic-Plastic Model Calibration
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
The purpose of this study was to first assess the sensitivity of the parameters of elasticplastic material models with anisotropic yield to choices in the calibration procedure. Two models were considered: Hill's 1948 and Barlat's Y1d2004-18p. Subsequently, it was shown that calibration choices can have an effect on the values of the stress and strain at the ultimate point in uniaxial specimen responses. Finally, the calibrated Barlat model was able to reasonably reproduce the load-deflection and strain fields of a validation specimen that experienced multiaxial states of stress. Overall, it was found that the Barlat model resulted in a closer fit to the measurements and that the parameters of the calibration procedure should be varied to assess the sensitivity of the results.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC04-94AL85000; NA0003525
- OSTI ID:
- 1470821
- Report Number(s):
- SAND--2018-10003R; 667803
- Country of Publication:
- United States
- Language:
- English
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