A viscoelastic – viscoplastic material model for superalloy applications

Rouse, J. P.; Engel, B.; Hyde, C. J.; Pattison, S. J.; Whittaker, M. T.; Jones, J. P.; Cockings, B.; Barnard, N. C.

Abstract

© 2020 Elsevier Ltd An understanding of rate dependency over a wide range of time scales is vitally important in approximating the transient response of critical components operating in extreme environments. Many examples of viscoplastic model formulations can be found in the literature, wherein all rate dependency is assumed to occur after yielding. Such models neglect any viscous effects during elastic deformation. In the present work, a unified viscoelastic – viscoplastic material model is developed for the Nickel superalloy RR1000. Particular emphasis is placed on model parameter determination, which is accomplished using standard cyclic plasticity and stress relaxation experimental data.

Citation

Rouse, J. P., Engel, B., Hyde, C. J., Pattison, S. J., Whittaker, M. T., Jones, J. P., …Barnard, N. C. (2020). A viscoelastic – viscoplastic material model for superalloy applications. International Journal of Fatigue, 136, Article 105579. https://doi.org/10.1016/j.ijfatigue.2020.105579

• Journal Article Type: Article
• Acceptance Date: Mar 4, 2020
• Online Publication Date: Mar 11, 2020
• Publication Date: Jul 1, 2020
• Deposit Date: Mar 19, 2020
• Publicly Available Date: Mar 12, 2021
• Journal: International Journal of Fatigue
• Print ISSN: 0142-1123
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 136
• Article Number: 105579
• DOI: https://doi.org/10.1016/j.ijfatigue.2020.105579
• Keywords: Mechanical Engineering; Modelling and Simulation; Industrial and Manufacturing Engineering; General Materials Science; Mechanics of Materials
• Public URL: https://nottingham-repository.worktribe.com/output/4169995
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0142112320301109