A generalization of the fatigue Kohout-Vechet model for several fatigue damage parameters

被引：73
|
作者：
Correia, J. A. F. O. [1 ,2 ]
Raposo, P. [1 ,2 ]
Muniz-Calvente, M. [3 ]
Blason, S. [3 ]
Lesiuk, G. [4 ]
De Jesus, A. M. P. [1 ,2 ]
Moreira, P. M. G. P. [1 ,2 ]
Calcada, R. A. B. [1 ,2 ]
Canteli, A. F. [3 ]
机构：
[1] Univ Porto, INEGI, Rua Dr Roberto Frias,Campus FEUP, P-4200465 Oporto, Portugal
[2] Univ Porto, CONSTRUCT, Fac Engn, Rua Dr Roberto Frias,Campus FEUP, P-4200465 Oporto, Portugal
[3] Univ Oviedo, Dept Construct & Mfg Engn, Campus Viesques, Gijon 33203, France
[4] Wroclaw Univ Technol, Dept Mech Mat Sci & Engn, Fac Mech Engn, Smoluchowskiego 25, PL-50370 Wroclaw, Poland
来源：
ENGINEERING FRACTURE MECHANICS | 2017年 / 185卷
关键词：
Fatigue; Wohler curve; Fatigue damage parameter; Kohout-Vechet model; PROBABILISTIC MODEL; LIFE ESTIMATION; STRAIN-ENERGY; STEEL; CURVES; BRIDGE;
D O I：
10.1016/j.engfracmech.2017.06.009
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A new proposal of generalization of the fatigue Kohout-Vechet (KV) model for different fatigue damage parameters is proposed. The purpose of this generalized model is to describe all fatigue regimes from very low-cycle fatigue (VLCF) to very high-cycle fatigue (VHCF), and accounting for several fatigue damage parameters, such as, strain parameter, Smith-Watson-Topper (SWT) parameter, Walker-like strain parameter, energy-based parameter in uniaxial loading conditions, among others. The full range of fatigue life responses for all loading regimes of materials and structural components are extremely important in the fatigue design. Engineering structures are subjected to different types of loading that cause fatigue failure. These loadings can range from quasi-static monotonic loading to long term dynamic/ cyclic loading. In this paper, a proposal of generalization of the KV model for several fatigue damage parameters was verified and compared with experimental fatigue results under uniaxial loading conditions available in literature. This study validates the importance and applicability of full range fatigue life models for different damage parameters in fatigue life prediction of materials and structural components. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：284 / 300
页数：17
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