期刊
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
卷 28, 期 5, 页码 708-739出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1056789518786031
关键词
Multiaxial fatigue; stress-strain analysis; life prediction; critical plane; mean stress
资金
- National Natural Science Foundation of China [11672070, 11302044]
- China Postdoctoral Science Foundation [2017T100697, 2015M582549]
- China Postdoctoral Science Special Foundation [2017T100697]
- Fundamental Research Funds for the Central Universities [ZYGX2016J208]
Through characterizing the interaction of normal/shear stress-strain behavior on material planes of TC4 alloys, a new strain energy critical plane model describing mean stress effects is proposed for life prediction under tension-compression, pure torsion, and tension-torsion loadings. Moreover, a modified Ince-Glinka model is elaborated through considering crack surface close to the maximum shear strain plane. Three simple solutions are presented to determine cracking failure mode using the concepts of life, damage, and strain. Comparing with lifing models of Liu, Smith-Watson-Topper, and modified Ince-Glinka, the proposed model provides more accurate life predictions for TC4 and a compressor turbine disc by full-scale fatigue testing.
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