Temperature-induced buckling of ductile metals during cyclic loading and the subsequent early fracture
Document Type
Article
Publication Date
6-15-2020
Abstract
This paper investigates the early fracture of the ductile metals under cyclic loading due to the occurrence of temperature-induced buckling (TIB). Extensive experiments with cylindrical dog-bone specimens made of SS316 and SS321 subjected to cyclic loading reveal that TIB occurs at a stress level below the buckling strength and before what inelastic cyclic buckling criterion predicts. It is shown that buckling occurs if the operating stress is at or above a critical limit σTIB and when the specimen's temperature reaches a critical limit, called TTIB. The analysis of the temperature evolution of these materials shows three distinct regions of Pre-TIB, TIB, and rapid failure thereafter. The measured TTIB for SS316 and SS321 are found to be 100 ○C and 130 ○C, respectively. The corresponding σTIB for SS316 and SS321 are 340 MPa and 365 MPa, respectively.
Publication Source (Journal or Book title)
International Journal of Mechanical Sciences
Recommended Citation
Jirandehi, A., Mehdizadeh, M., & Khonsari, M. (2020). Temperature-induced buckling of ductile metals during cyclic loading and the subsequent early fracture. International Journal of Mechanical Sciences, 176 https://doi.org/10.1016/j.ijmecsci.2020.105525