Using the Smith-Watson-Topper Parameter and Its Modifications to Calculate the Fatigue Life of Metals: The State-of-the-Art

被引：22

作者：

Lagoda, Tadeusz ^{[1
]}

Vantadori, Sabrina ^{[2
]}

Glowacka, Karolina ^{[1
]}

Kurek, Marta ^{[1
]}

Kluger, Krzysztof ^{[1
]}

机构：

[1] Opole Univ Technol, Fac Mech Engn, PL-45758 Opole, Poland

[2] Univ Parma, Dept Engn & Architecture, I-43124 Parma, Italy

来源：

MATERIALS | 2022年 / 15卷 / 10期

关键词：

stress; strain; energy parameter; critical plane; fatigue; CRITICAL PLANE; MEAN STRESS; DAMAGE PARAMETER; FRETTING FATIGUE; STRAIN; PREDICTION; CRITERIA; BEHAVIOR;

D O I：

10.3390/ma15103481

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：

The Smith-Watson-Topper parameter (SWT) in its original form was designed to estimate the fatigue life of metal materials in a uniaxial load state (tension-compression) in the range up to fatigue crack initiation, with non-zero mean values. This parameter is based on the analysis of both stress and strain. Therefore, the stress-strain criterion is the focus, rather than the energy criterion. This paper presents the original SWT model and its numerous modifications. The first part presents different versions of this parameter defined by the normal parameters. Then, it presents versions defined through the tangent parameter and the most promising parameter defined through the tangent and normal parameters. It was noted that the final form of the equivalent value is defined either by stress or by an energy parameter. Therefore, the possible characteristics from which the fatigue life can be determined are also presented.

引用

页数：15