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基于STEP的标准零件库的实现王祥龙,韦尧兵,王玲摘 要:产品数据交换标准STEP是国际标准化组织ISO制定的一个关于产品数据的计算机可理解的国际标准.提出了利用数据库实现方法实现数据交换的技术解决方案.关键词:STEP;零件库;EXPRESS语言;......
Nucleation and growth of eutectic cell in hypoeutectic Al-Si alloy SUN Yu1, PANG Shao-ping1, LIU Xue-ran1, YANG Zi-run1, SUN Guo-xiong2 1. School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224002, China; 2. School of Materials Engineering, Southeast University, Nanjing 210096, China Received 8 October 2010; accepted 19 May 2011 Abstract: The nucleation and growth......
arches subjected to step loads CHEN Yao(陈耀)1, 2, FENG Jian(冯健)1, 2 1. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096... be induced when shallow arches were subjected to vertical step loads. In-plane static and dynamic buckling of shallow pin-ended parabolic arches with a horizontal cable was investigated. Based......
with the surface crystal plane. It is quite different from the growth trace of the screw dislocation growth. The growth step sources required for Si phase are supplied by δ(111)/3 and 2δ(111)/3 sub-steps, which creates on {111} growth surface of silicon crystal by stacking faults. Two kinds of sub-steps created by turns can supply the lasting growth step sources for Si phase. The growth ending interface......
J. Cent. South Univ. Technol. (2008) 15: 159-164 DOI: 10.1007/s11771-008-0031-x Influence of crystallographic orientation on growth behavior of spherical voids ZHANG Xin-ming(张新明)1, LIU Wen-hui...; Abstract: The influence of crystallographic orientation on the void growth in FCC crystals was numerically simulated with 3D crystal plasticity finite......
基于STEP和XML的产品数据交换技术陈天凡福建信息职业技术学院福州大学机械工程学院摘 要:阐述了基于STEP和XML的产品数据交换技术,分析了STEP与XML文件转换方法,提出了产品数据交换技术在网络中的集成模型.关键词:STEP;XML;数据交换;集成;......
proposed a novel scale-free network model as follows. (1) Clique growth: Starting with a small number (m0) of cliques, at every time step we added a new clique with m edges that link...J. Cent. South Univ. Technol. (2009) 16: 0474-0477 DOI: 10.1007/s11771-009-0079-2 A novel scale-free network model based on clique growth WANG Bo(王 波), YANG Xu-hua(杨旭华), WANG Wan-liang(王万良......
基于STEP的CAD/CAPP集成沈玲,王岩基东北大学机械厂辽宁省交通厅公路管理局摘 要:基于STEP的CAD/CAPP集成□沈玲(东北大学机械厂沈阳110006)□王岩基(辽宁省交通厅公路管理局沈阳110005)1.引言CAPP的最终目标是直接从设计获取信息产生优化的工艺过程,它是连接CAD和CAPP的中间桥梁,因此,要实现CIM,首...关键词:......
Crystal growth of tungsten during hydrogen reduction of tungsten oxide at high temperature WU Xiang-wei(吴湘伟)1, 2, LUO Jing-song(罗劲松)2, LU Bi-zhi(陆必治)2, XIE Chen-hui(谢晨辉)2, PI Zhi-ming...; Abstract: Crystal growth of tungsten during hydrogen reduction of tungsten oxide (WO3) to prepare......
that the rate controlling step was gas-phase diffusion step and the growth rate constant(k) ranged from 1.53 mg2/(cm4·h2) to 2.3 mg2/(cm4·h2). Activation energy(Q) for the process was calculated as 109 k J...Microstructure and Growth Kinetics of Silicide Coatings for TiAl Alloy黄磊,吴向清,XIE Faqin,WANG SuSchool of Aeronautics,Northwestern Polytechnical University摘 要: <上一页 1 2 3 4 5 6 7 8 9 10 ... 1161 下一页 >