The development of two multiaxial ductility factor predicting models based on creep cavity growth theory

• Autorzy: Wu Dongquan , Li Yupeng , Liu Zixiang , Li Dinghe

Identyfikatory

DOI

10.15632/jtam-pl/166369

• Języki publikacji: EN

Abstrakty

EN

In this study, the multiaxial ductility factor was analyzed based on the power-law creep grain-boundary cavities growth theory under multiaxial stress states. Based on this theory, the theoretical cavities growth rates under a multiaxial stress state were discussed and the predicting model of a stress-state parameter α was revised by using an empirical fitting expression denoted as αWu, which exhibited a good agreement to analytical results of the stress-state parameter α and multiaxial cavities growth rates. Then, according to the re- lationship between uniaxial and multiaxial creep failure strain, a new empirical predicting model of multiaxial ductility factor MDFWu was established which involved the multiax- ial parameter αWu and uniaxial parameter α0. Besides, the theoretical model of multiaxial ductility factor MDF could also be established. By fitting the theoretical values of MDF, an- other predicting model MDFWM was proposed. The development of two multiaxial ductility factor predicting models could be achieved. Finally, predictions of these two novel multiax- ial ductility factor models and the Cocks-Ashby as well as Wen-Tu model were compared with experimental data, and the prediction accuracy of MDFWu and MDFWM models was significantly improved, especially for the latter one.

Słowa kluczowe

EN

multiaxial ductility factor; cavities growth theory; power-law creep; multiaxial stress state

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2023
• Tom: Vol. 61 nr 3
• Strony: 481--494
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Wu Dongquan

• Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin, China

autor

Li Yupeng

• Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin, China

autor

Liu Zixiang

• Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin, China

autor

Li Dinghe

• Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin, China

Bibliografia

• 1. Alang N.A., Nikbin K., 2018, An analytical and numerical approach to multiscale ductility constraint based model to predict uniaxial/multiaxial creep rupture and cracking rates, International Journal of Mechanical Sciences, 135, 342-352.
• 2. Al-Rifaie H., Studziński R., Gajewski T., Malendowski M., Sumelka W., Sielicki P.W., 2021, A new blast absorbing sandwich panel with unconnected corrugated layers - Numerical study, Energies, 14, 1.
• 3. Al-Rifaie H., Sumelka W., 2019, The development of a new shock absorbing uniaxial graded auxetic damper (UGAD), Materials, 12, 16.
• 4. Cocks A.C.F., Ashby M.F., 1980, Intergranular fracture during power-law creep under multiaxial stresses, Metal Science Journal, 14, 8-9, 395-402.
• 5. Davies C., 2006, Crack Initiation and Growth at Elevated Temperatures in Engineering Steels, Imperial College London.
• 6. Holdsworth S.R., 1992, Initiation and early growth of creep cracks from pre-existing defects, Materials at High Temperatures, 10, 2, 127-137.
• 7. Manjoine M.J., 1975, Ductility indices at elevated temperature, Journal of Engineering Materials and Technology, 97, 2, 156-161.
• 8. McClintock F.A., 1968, A criterion for ductile fracture by the growth of holes, Journal of Applied Mechanics, 35, 2, 363-371.
• 9. Rice J.R., Tracey D.M., 1969, On the ductile enlargement of voids in triaxial stress fields, Journal of the Mechanics and Physics of Solids, 17, 3, 201-217.
• 10. Spindler M.W., 2004a, The multiaxial and uniaxial creep ductility of Type 304 steel as a function of stress and strain rate, Materials at High Temperatures, 21, 1, 47-54.
• 11. Spindler M.W., 2004b, The multiaxial creep ductility of austenitic stainless steels, Fatigue and Fracture of Engineering Materials and Structures, 27, 4, 273-281.
• 12. Spindler M.W., Hales R., Skelton R.P., 2001, Multiaxial creep ductility of an exservice type 316 H stainless steel, 9th International Conference on Creep and Fracture of Engineering Materials and Structure, 679-688.
• 13. Tan J.P., Tu S.T., Wang G.Z., Xuan F.Z., 2013, Effect and mechanism of out-of-plane constraint on creep crack growth behavior of a Cr-Mo-V steel, Engineering Fracture Mechanics, 99, 324-334.
• 14. Wen J.F., Tu S.T., 2014, A multiaxial creep-damage model for creep crack growth considering cavity growth and microcrack interaction, Engineering Fracture Mechanics, 123, 197-210.
• 15. Wen J.F., Tu S.T., Xuan F.Z., Zhang X.W., Gao X.L., 2016, Effects of stress level and stress state on creep ductility: Evaluation of different models, Journal of Materials Science and Technology, 32, 8, 695-704.
• 16. Wichtmann A., 2002, Evaluation of creep damage due to void growth under triaxial stress states in the design of steam turbine components, JSME International Journal, 45, 1, 72-76.
• 17. Wu D., Jing H., Xu L., 2020, Engineering application of enhanced C*-Q* two parameter approaches for predicting creep crack initiation times, European Journal of Mechanics – A/Solids, 82, 104013.
• 18. Wu D., Jing H., Xu L., Zhao L., Han Y., 2018a, Analytical approaches of creep crack initiation prediction coupled with the residual stress and constraint effect, European Journal of Mechanics – A/Solids, 71, 1-15.
• 19. Wu D., Jing H., Xu L., Zhao L., Han Y., 2018b, Numerical analysis of the creep crack constraint effects and the creep crack initiation for pressurized pipelines with circumferential surface cracks, Advances in Engineering Software, 115, 40-51.
• 20. Wu D., Jing H., Xu L., Zhao L., Han Y., 2018c, Theoretical and numerical analysis of the creep crack initiation time considering the constraint effects for pressurized pipelines with axial surface cracks, International Journal of Mechanical Sciences, 141, 262-275.
• 21. Wu D., Jing H., Xu L., Zhao L., Han Y., 2018d, Theoretical and numerical analysis of creep crack initiation combined with primary and secondary stresses, Theoretical and Applied Fracture Mechanics, 95, 143-154.
• 22. Wu D., Jing H., Xu L., Zhao L., Han Y., 2018e, Two-parameter approach of creep crack initiation times considering the constraint effect induced by specimen geometry, Theoretical and Applied Fracture Mechanics, 96, 31-44.
• 23. Wu D., Jing H., Xu L., Zhao L., Han Y., 2019, Enhanced models of creep crack initiation prediction coupled the stress-regime creep properties and constraint effect, European Journal of Mechanics – A/Solids, 74, 145-159.
• 24. Yatomi M., Bettinson A.D., O’Dowd N.P., Nikbin K.M., 2004, Modelling of damage development and failure in notched-bar multiaxial creep tests, Fatigue and Fracture of Engineering Materials and Structures, 27, 4, 283-295.
• 25. Yatomi M., Tabuchi M., 2010, Issues relating to numerical modelling of creep crack growth, Engineering Fracture Mechanics, 77, 15, 3043-3052.
• 26. You B.R., Lee S.B., 1996, A critical review on multiaxial fatigue assessments of metals, International Journal of Fatigue, 18, 4, 235-244.