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| 1 | Experimental and numerical study on fretting wear and fatigue of full-scale railway axles显示文摘This study investigated the fretting wear and fatigue of full-scale railway axles.Fatigue tests were conducted on full-scale railway axles,and the fretting wear and fretting fatigue in the fretted zone of the railway axles were analysed.Three-dimensional finite element models were established based on the experimental results.Then,multi-axial fatigue parameters and a linear elastic fracture mechanics-based approach were used to investigate the fretting fatigue crack initiation and propagation,respectively,in which the role of the fretting wear was taken into account.The experimental and simulated results showed that the fretted zone could be divided into zones I-III according to the surface damage morphologies.Fretting wear alleviated the stress concentration near the wheel seat edge and resulted in a new stress concentration near the worn/unworn boundary in zone II,which greatly promoted the fretting crack initiation at the inner side of the fretted zone.Meanwhile,the stress concentration also increased the equivalent stress intensity factor range DKeq below the mating surface,and thus promoted the propagation of fretting fatigue crack.Based on these findings,the effect of the stress redistribution resulting from fretting wear is suggested to be taken into account when evaluating the fretting fatigue in railway axles. | Lang Zou Dongfang Zeng Yabo Li Kai Yang Liantao Lu Caiqin Yuan | 2020 | Railway Engineering Science2020，28，4： | 7 |
| 2 | Influence of laser dispersed treatment on rolling contact wear and fatigue behavior of railway wheel steel 显示文摘 | Zeng Dongfang Lu Liantao Li Zhengyang | 2014 | Material Design2014，54，： | 1 |
| 3 | S-N curve characteristics and subsurface crack initiation behaviour in ultra-long life fatigue of a high carbon chromium bearing steel显示文摘 | SHIOZAWA K LU Liantao ISHIHARA S | 2001 | Fatigue & Fracture of Engineering Materials & Structures2001，24，12： | 1 |
| 4 | Very high-cycle fatigue behaviour of shot-peened high-carbon-chromium bearing steel显示文摘 | SHIOZAWA K LU Liantao | 2002 | Fatigue & Fracture of Engineering Materials &Structures2002，25，9： | 1 |
| 5 | S-N curve characteristic and subsurface crack initiation behaviour in ultra-long life fatigue of a high carton chromium beating steel 显示文摘 | Shiozawa K Lu Liantao Ishihara S | 2001 | Fatigue & Fracture of Engineering Materials & Structures2001，24，12： | 1 |
| 6 | Very high cycle fatigue properties of bearing steel under axial loading condition显示文摘 | Shiozawa K Lu Liantao etc | 2009 | International Journal of Fatigue2009，31，5： | 1 |
| 7 | The effect of the residual stresses generated by surface finishing methods on the very high cycle fatigue behavior of matrix HSS显示文摘 | Yuuji Shimatani Kazuaki Shiozawa Takehiro Nakada Takashi Yoshimoto Liantao Lu | 2010 | International Journal of Fatigue2010，，2： | 1 |
| 8 | Structural Stress-Fatigue Life Curve Improvement of Spot Welding Based on Quasi‑Newton Method显示文摘ΔF-N curves are usually used to predict the fatigue life of spot welding in engineering,but they are time-consuming and laborious and not universal.For the purpose of predicting the fatigue life of spot welding accurately and efficiently,tensile-shear fatigue tests were conducted to obtain the fatigue life of spot-welded specimens with different sheet thicknesses combinations.These specimens were simulated by using the finite element method,and the structural stress was theoretically calculated.In the double logarithmic coordinate system,the structural stress-fatigue life(S-N)curve of spot welding was fitted by the least-squares method,based on the quasi-Newton method.The square of the correlation coefficient of the S-N curve was taken as the optimization objective,with the correction coefficients of force,bending moment,spot welding diameter,and sheet thickness as the variables.During the optimization process,three different ways were utilized to get three optimized spot welding S-N curves,which are suitable for different situations.The results show that the fitting effect of the S-N curve is improved,the data points are more compact,and the optimization effect is significant.These S-N curves can be used to predict the fatigue life,which provide the basis for practical engineering application. | Yahang Qin Shoune Xiao Liantao Lu Bing Yang Xiangjie Li Guangwu Yang | 2020 | Chinese Journal of Mechanical Engineering2020，33，2： | 0 |
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