Lifetime Assessment for Multiaxial High-Cycle Fatigue Using Twin-Shear Unified Yield Criteria

Metals

Juncheng Wang¹  Haoran Li¹  Jiadong Wang¹  Ming Hu¹  Yan Peng² 

[1] Faculty of Mechanical Engineering and Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China;School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China;

关键词: multiaxial fatigue;    high cycle fatigue;    lifetime assessment;    twin-shear unified yield criteria;    mean stress;   

DOI  :  10.3390/met11081178

来源: DOAJ

【 摘 要 】

In this paper, a life prediction model associated with maximum principal stress and equivalent shear amplitude based on twin-shear unified yield criterion for multiaxial high-cycle fatigue is proposed. The equivalent shear amplitude is the normalized format of the equivalent shear amplitude based on clusters of yield criteria embodying Tresca and the linearization of Huber-von Mises, extending the application to metallic materials. Simultaneously, the effect of mean stress on multiaxial high-cycle fatigue is considered in the proposed model. As an assessment of the new prediction model, the criterion is compared with experimental data of aluminum alloy LY12CZ and carbon structural steel SM45C published in the relevant literature, which shows that most of the data are located within an error range of less than two times the data and are in good agreement with the experiment. Moreover, the proposed model is also compared with other models, such as McDiarmid, Liu, and Freitas, to validate its competitiveness.

【 授权许可】

Unknown