Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 57, Issue 1, Pages 98-103Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-013-5335-7
Keywords
multiaxial fatigue; fatigue damage rule; nonproportional loading; variable amplitude loading
Categories
Funding
- National Natural Science Foundation of China [10702027]
- Aviation Science Funds of China [2011ZA52016]
- Program for Changjiang Scholars and Innovative Research Team in University [Irt0906]
Ask authors/readers for more resources
A series of biaxial two-level variable amplitude loading tests are conducted on smooth tubular specimens of LY12CZ aluminium alloy. The loading paths of 90A degrees out-of-phase, 45A degrees out-of-phase and 45A degrees in-phase are utilized. The fatigue damage cumulative rules under two-level step loading of three loading paths are analyzed. By introducing a parameter alpha which is a function of the phase lag angle between the axial and the torsional loading, a new multiaxial nonlinear fatigue damage cumulative model is proposed. The proposed model is evaluated by the experimental data for two-level loading, multi-level loading of LY12CZ aluminium alloy, and multi-level loading of 45 steel. Fatigue lives predicted are within a factor of 2 scatter band.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available