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speed ranged from 100 m/min to 140 m/min, and the feed per tooth ranged from 0.02 mm/z to 0.06 mm/z, the obtained surface roughness were within the limit (<0.8 μm). Fatigue life decreased sharply...Trans. Nonferrous Met. Soc. China 23(2013) 650-660 Influence of high-speed milling parameter on 3D surface topography and fatigue behavior of TB6 titanium alloy Chang-feng YAO, Dao-xia WU, Qi-chao......
effectively improve the fatigue properties. Both the surface microstructure and texture of ZK60 magnesium alloy change greatly after shot peening. The fatigue limit increases from 140 to 180 MPa after shot peening with the optimum Almen intensity of 0.05 mm, the improvement of 29% in fatigue limit is achieved, and the fatigue life is significantly increased. In addition, the magnesium alloy ZK60......
of Fatigue, 2010, 32: 411-419. [2] NAN Z, ISHIHARA S, GOSHRNA L, NAKANISHI R. Scanning probe microscope observations of fatigue process in magnesium alloy AZ3l near the fatigue limit[J]. Scr Mater...有效地增强疲劳裂纹闭合效应,降低或延滞AZ31镁合金疲劳裂纹的扩展. 关键词:AZ31镁合金；磷酸盐；疲劳裂纹扩展；疲劳裂纹闭合 中图分类号:TG 146.2 文献标志码:A Effects of immersing phosphate on fatigue crack propagation in AZ31 magnesium......
the effectiveness of solving. The total flowchart is shown in Fig. 2. 4 Fatigue analysis of cumulative damage model The cumulative damage model based on Miner criterion can be used to express the fatigue limit... on the AASHTO or the constant amplitude fatigue limit at 5 million cycles in the Eurocode3; m1 and m2 are the slopes of the bilinear S-N curve with the stress amplitude S greater and smaller than [S......
:1672-7207(2020)01-0165-11 Fatigue test study of combined cable-girder anchorage structure in cable-stayed bridge with steel truss girder CAO Shanshan1, 2, LEI Junqing2, HUANG Zuwei2 (1. Experimental College, The Open University of China, Beijing 100039, China； 2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China) Abstract: Based on the fatigue test results of the combined......
弹簧钢55SiCrA轴向疲劳行为的试验研究肖金福1,刘雅政1,孙小军1,孙景宏1,谢建新1(1.北京市北京科技大学材料科学与工程学院)摘 要:随着对汽车轻量化和安全性要求的不断提高,改善疲劳性能成为弹簧钢研究与开发的一个重要主题.在Amsler HFP 5000高频疲劳试验机上研究了弹簧钢55SiCrA轴向拉-压加载的疲劳性能,测定了其条件疲劳极限及S-N曲线,利用扫描电镜(SEM)和E-DAX对疲劳断口及夹杂物进行观察,对断口进行了宏观和微观分析,研究了疲劳破坏的机制.试验结果表明:试验钢的条件疲劳极限为82......
Dynamic limit equilibrium analysis of sliding block for rock slope based on nonlinear FEMLIU Yao-ru(刘相儒), HE Zhu(何柱), LENG Kuang-dai(冷旷代), HUANG Yue-qun(黄跃群), YANG Qiang(杨强)(State Key Laboratory of Hydroscience and Engineering (Tsinghua University), Beijing 100084, China)Abstract:Traditional rigid body limit equilibrium method (RBLEM) was adopted for the stability evaluation and analysis of rock......
Three-dimensional stability analysis of anisotropic and non-homogeneous slopes using limit analysisHAN Chang-yu(韩长玉), CHEN Jin-jian(陈锦剑), XIA Xiao-he(夏小和), WANG Jian-hua(王建华) (Department of Civil...-bound theorem of the limit analysis approach. The approach can be considered as a modification and extension of the solutions. The influences of friction angle, anisotropy factor, nonhomogeneous......
Target reliability index for serviceability limit state of single pilesBIAN Xiao-ya(边晓亚)1, ZHENG Jun-jie(郑俊杰)1, XU Zhi-jun(徐志军)2, ZHANG Rong-jun(章荣军)1(1. School of Civil Engineering & Mechanics... is to develop an approach for the determination of the target reliability index for serviceability limit state (SLS) of single piles. This contributes to conducting the SLS reliability-based design (RBD......
examined by scanning electron microscopy. The results show that the high cycle fatigue limit strength for the smooth specimens is 365 MPa, and that for the notched specimens is 220 MPa, indicating... striations increases. The fatigue fracture mode of TG6 titanium alloy shows a feature of ductile fracture. Key words: TG6 titanium alloy; stress concentrating factor; high cycle fatigue; fatigue limit; fatigue......
