Citation: | XU Ying, YANG Tao, WANG Xuemin, et al. Notched fatigue strength prediction of SiCp/Al composites based on the three-dimensional space vector stress field intensity method[J]. Journal of Aerospace Power, 2024, 39(4):20220336 doi: 10.13224/j.cnki.jasp.20220336 |
In order to consider the influence of stress gradient on the fatigue strength of SiCp/Al composite structure, a notched fatigue strength prediction method of SiCp/Al composite was developed based on the three-dimensional space vector stress field intensity method (TSVFM) and the fatigue strength of smooth specimen. In the TSVFM, the equivalent stress integral forms of classic one-dimensional stress field intensity method and effective distance point stress field intensity method were applied respectively, which avoided the construction of three-dimensional weight function and artificial determination of fatigue damage region. The fatigue test scheme of SiCp/2009Al composite smooth specimen was determined by up-and-down method, and the axial (
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