Critical components of modern turbomachinery are frequently subjected to a myriad of service conditions that include diverse mechanical loads at elevated temperatures. The cost, applicability, and accuracy of either numerical or analytical component-level simulations are largely dependent on the material model chosen for the application. A non-interaction (NI) model derived from individual elastic, plastic, and creep components is developed in this study. The candidate material under examination for this application is 2.25Cr-1Mo, a low-alloy ferritic steel commonly used in chemical processing, nuclear reactors, pressure vessels, and power generation. Data acquired from literature over a range of temperatures up to 650°C are used to calibrate the creep and plastic components described using constitutive models generally native to general-purpose FEA. Traditional methods invoked to generate coefficients for advanced constitutive models such as non-linear kinematic hardening employ numerical fittings of hysteresis data, which result in values that are neither repeatable nor display reasonable temperature-dependence. By extrapolating simplifications commonly used for reduced-order model approximations, an extension utilizing only the cyclic Ramberg-Osgood coefficients has been developed to identify these parameters. Unit cell simulations are conducted to verify the accuracy of the approach. Results are compared with isothermal and non-isothermal literature data.
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ASME 2016 Power Conference collocated with the ASME 2016 10th International Conference on Energy Sustainability and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology
June 26–30, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Power Division
- Advanced Energy Systems Division
- Solar Energy Division
- Nuclear Engineering Division
ISBN:
978-0-7918-5021-3
PROCEEDINGS PAPER
Application of Ramberg-Osgood Plasticity to Determine Cyclic Hardening Parameters Available to Purchase
Thomas Bouchenot,
Thomas Bouchenot
University of Central Florida, Orlando, FL
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Bassem Felemban,
Bassem Felemban
University of Central Florida, Orlando, FL
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Cristian Mejia,
Cristian Mejia
University of Central Florida, Orlando, FL
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Ali P. Gordon
Ali P. Gordon
University of Central Florida, Orlando, FL
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Thomas Bouchenot
University of Central Florida, Orlando, FL
Bassem Felemban
University of Central Florida, Orlando, FL
Cristian Mejia
University of Central Florida, Orlando, FL
Ali P. Gordon
University of Central Florida, Orlando, FL
Paper No:
POWER2016-59317, V001T02A003; 11 pages
Published Online:
November 1, 2016
Citation
Bouchenot, T, Felemban, B, Mejia, C, & Gordon, AP. "Application of Ramberg-Osgood Plasticity to Determine Cyclic Hardening Parameters." Proceedings of the ASME 2016 Power Conference collocated with the ASME 2016 10th International Conference on Energy Sustainability and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2016 Power Conference. Charlotte, North Carolina, USA. June 26–30, 2016. V001T02A003. ASME. https://doi.org/10.1115/POWER2016-59317
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