Analysis of the Failure Process of Elements Subjected to Monotonic and Cyclic Loading Using the Wierzbicki-Bai Model

被引:2
作者
Janus-Galkiewicz, Urszula [1 ]
Galkiewicz, Jaroslaw [1 ]
机构
[1] Kielce Univ Technol, Fac Mechatron & Mech Engn, PL-25314 Kielce, Poland
关键词
Wierzbicki-Bai model; fatigue; tensile test; stress triaxiality; Lode parameter; DUCTILE FRACTURE; STRESS TRIAXIALITY; RUPTURE MECHANISMS; COMBINED TENSION; PLASTICITY; PRESSURE; BEHAVIOR; FATIGUE; GROWTH; STRAIN;
D O I
10.3390/ma14216265
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
This article presents the results of a simulation in which smooth cylindrical and ring-notched samples were subjected to monotonic and fatigue loads in an ultra-short-life range, made of Inconel 718 super alloy. The samples displayed different behaviors as a result of different geometries that introduced varying levels of stress triaxiality and loading methods. The simulations used the Wierzbicki-Bai model, which took into account the influence of stress tensors and stress-deviator invariants on the behavior of the material. The difference in the behaviors of the smoothed and notched specimens subjected to tensile and fatigue loads were identified and described. The numerical results were qualitatively supported by the results of the experiments presented in the literature.
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页数:17
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