Impact resistance prediction of superalloy honeycomb using modified Johnson–Cook constitutive model and fracture criterion. (September 2019)

• Record Type: Journal Article
• Authors: Wang, Jianjun; Hu, Xueyao; Yuan, Kangbo; Meng, Weihua; Li, Penghui
• Is Part Of: International journal of impact engineering. Volume 131(2019)
• Page Start: 66
• Page End: 77
• Publication Date: 2019-09
• Subjects: Superalloy -- Temperature -- Strain rate -- Constitutive model -- Fracture criterion; Impact -- Periodicals; Shock (Mechanics) -- Periodicals; Impact -- Périodiques; Choc (Mécanique) -- Périodiques; Impact; Shock (Mechanics); Periodicals; 620.1125
• DOI: 10.1016/j.ijimpeng.2019.05.001
• Languages: English
• ISSNs: 0734-743X

Abstract

Highlights: The temperature and strain rate dependence of deformation behaviors of superalloy GH3536 were investigated. The effects of stress triaxiality, temperature, and strain rate on the fracture behavior of superalloy GH3536 were studied. Modified J–C constitutive model was developed to accurately describe the deformation behaviors. Modified J–C fracture criterion was developed to characterize the fracture behaviors. Impact resistance of honeycomb structure made from the superalloy were tested at different temperatures, impact velocities and impact angles. Abstract: In this study, to further understand the containment properties of a containment ring, the deformation behavior of GH3536 superalloy used as the material of the containment ring were investigated over a wide range of temperatures and strain rates. The effects of stress triaxiality, temperature, and strain rate on the fracture behavior of the superalloy were analyzed. According to the temperature and strain rate dependences of the deformation behavior, the original Johnson-Cook constitutive model (J––C model) was unable to describe such behavior, and a modified J–C model was developed. In view of the stress triaxiality, temperature and strain rate dependences of the fracture behavior, the original Johnson–Cook fracture criterion (J–C criterion) was inapplicable to describe such fracture behavior, and a modified J–C criterion was proposed. Finally, the impact resistance of honeycomb structure made from the superalloy and applied on the containment ring were tested at different temperatures, impact velocities and impact angles. Using the modified J–C model and J–C criterion, the resistance property of the honeycomb structure could be accurately predicted.