维普中文期刊产品整合服务
8篇 您的检索式:作者名="D.Han"
    题名 作者 年代 出处 被引量
1路网信息不完备条件下的动态最短路搜索显示文摘针对路网信息不完备性、路网结构特征和驾驶员习惯等因素,研究最短路搜索问题。提出以全局规划和局部规划相结合的动态最短路混合规划方法:全局规划中,基于参数d/l(起终点距离d与平均路段长度l之比),确定路径搜索区域的椭圆方程,运用Dijkstra算法生成静态的全局最短路径;局部规划中,结合路网结构特征、突发事件影响范围,提出改进Bug算法,以避免车辆进入全局最短路径上发生的紧急事件或严重堵塞区域,实现动态诱导。仿真实验结果表明,混合规划方法能在路网信息不完备条件下实现最短路径动态诱导,有效避开拥堵区域。龙科军 Lee D.HAN 王赛政 2011计算机应用2011,31,3:3
2Effects of Ureaplasma urealyticum infection on the male reproductive system in experimental rats显示文摘Y.Wang Z.‐W.Wu L.‐F.Zhang X.‐K.Wu L.Yi X.‐D.Han 2010Andrologia2010,,5:1
3Corrosion resistance of single TiN layers, Ti/TiN bilayers and Ti/TiN/Ti/TiN multilayers on iron under a salt fog spray (phohesion) test: an evaluation by XPS显示文摘J. F.Marco A. C.Agudelo J. R.Gancedo D.Han?el 1999Surf Interface Anal1999,,2:1
4COMPARISON OF FATIGUE AND CREEP BEHAVIOR BETWEEN 2D AND 3D-C/SiC COMPOSITES显示文摘The differences of tension-tension fatigue and tensile creep characters of 2D-C/SiCand 3D-C/SiC composites have been scrutinized to meet the engineering needs. Experiments of tension-tension fatigue and tensile creep are carried out under vacuum high temperature condition. All of the high temperature fatigue curves are flat; the fatigue curves of the 2D-C/SiC are flatter and even parallel to the horizontal axis. While the tension-tension fatigue limit of the 3D-C/SiC is higher than that of the 2D-C/SiC, the fiber pullout length of the fatigue fracture surface of the 3D-C/SiC is longer than that of the 2D-C/SiC, and fracture morphology of the 3D-C/SiC is rougher, and pullout length of the fiber tows is longer. At the same time the 3D-C/SiC has higher tensile creep resistance. The tensile curve and the tensile creep curve of both materials consist of a series of flat step. These phenomena can be explained by the non-continuity of the damage.D.Han S.R.Qiao M.Li J.T.Hou X.J.Wu 2004Acta Metallurgica Sinica(English Letters)2004,17,4:1
5Effects of dietary lipid levels on growth,survival and lipid metabohsm during early ontogeny of Pelteobagrus vachelli larvae显示文摘Zheng K.K X.M.Zhu D.Han 0,,1:1
6用色层分析法测定牛及鸡的肌肉组织中肌红蛋白和血红蛋白色素显示文摘本试验之目的旨在通过高效波相色层法(HPLC)来分离牛与鸡肉中的肌红蛋白(Mb)和血红蛋白(Hb),从而比较用HPLC与传统的分光光度法测定时。D.HAN 张治良 1997肉品卫生1997,,1:1
7FRACTURE RESISTANCE OF 3D-C/SiC COMPOSITES AT 1300℃显示文摘Based on the energy conservation, the elastic energy linked to the compliance change,non-elastic energy dissipated by irreversible deformation and the resistance for crack propagation were quantitatively characterized by evaluation the load/load point displacement curves tested by three points bend experiment with single notch beam at 1300℃. The cracks length was determined by compliance calibration curves. It is shown by experimental results that the compliance of 3D-C/SiC composites changes with the cracks can be described by third order polynomial. The variation of crack advancing resistance with non-dimensional equivalent crack length presents a convex curve. The crack advancing resistance increases firstly and then decreases with the non-dimensional equivalent crack length, finally is in comparatively low level. The maximum values of crack advancing resistance are 269.73k J/m2 for nondimensional equivalent crack length of 0.318 and original notch length of 0.35mm,and 138.65k J/m2 for non-dimensional equivalent crack length of 0.381 and original notch length of 2.06mm, respectively.G.C.Ji S.R.Qiao S.M.Du M.Li D.Han J.N.Wei 2004Acta Metallurgica Sinica(English Letters)2004,17,4:0
8Short-range ordering plays a determining role in the low-cycle fatigue life improvement of fcc metals: A conclusive study on low solid-solution hardening Ni-Cr alloys显示文摘The effect of short-range ordering (SRO) on the low-cycle fatigue (LCF) behavior of low solid-solution hardening Ni-Cr alloys with high stacking fault energies (SFEs) was systematically studied under cycling at constant total strain amplitude (Δε t /2) in the range of 0.1%–0.7%. The results show that an inducement of SRO structures can notably improve the fatigue life of the alloy regardless of Δε t /2, and several unique fatigue characteristics have been detected, including the transition of fatigue cracking mode from intergranular cracking to slip band cracking, the non-negligible evolution from non-Masing behavior in pure Ni to Masing behavior in the Ni-40Cr alloy, and the secondary cyclic hardening behavior in the Ni-10Cr and Ni-20Cr alloys. All these experimental phenomena are tightly associated with the transformation in cyclic deformation mechanisms that is induced by SRO based on the “glide plane softening” effect. Furthermore, a comprehensive fatigue life prediction model based on total hysteresis energy has been reasonably proposed, focusing on the analyses of the macroscopic model parameters (namely the fatigue cracking resistance exponent β and the crack propagation resistance parameter W 0 ) and microscopic damage mechanisms. In brief, on the premise that the effects of SFE and friction stress can be nearly ignored, as in the case of the present low solid-solution hardening Ni-Cr alloys with high SFEs, an enhancement of SRO in face-centered cubic metals has been convincingly confirmed to be an effective strategy to improve their LCF performance.Y.J.Zhang D.Han X.W.Li 2023Journal of Materials Science & Technology2023,,25:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费