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:1672-7207(2019)06-1343-08 An elastoplastic contact model for rough surface contact with continuous, monotonous and smooth stiffness XIAO Huifang1, SUN Yunyun2, XU Jinwu2 (1. School of Mechanical...) Abstract: A new elastoplastic contact stiffness model based on the low order elliptic curve was proposed for single asperity contact. The Greenwood-Williamson model was used for surface topography......
界面;谐波;换能系统;非线性 中图分类号:TN405.96 文献标志码:A 文章编号:1672-7207(2011)02-0368-05 Effect of contact interface... in ultrasonic transducer, improve vibration stability of capillary and increase bond strength, the model of ultrasonic propagation through contact interface was established. In ultrasonic wire bonder, the bond......
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; 文章编号:1672-7207(2011)08-2446-07 Knowledge bank model to predict motion angle of terrane in metal deposit and its application in engineering LIU Qin1, 2, LIU Zhi-xiang3, LI Di-yuan3...; 3. School of Resources and Safety Engineering, Central South University, Changsha 410083, China) Abstract: Based on data of terrane moving angle in domestic and overseas filling mines, a knowledge......
electrical contact materials CHEN Wen-ge1, 2, CHEN Mian-zhi2, XING Li-qian1, LI Jin-shan1, HONG Feng2 (1. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China; 2. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China) Abstract: The WCu electrical contact materials containing 0.3%B, 2.0%Nb and 1.5%Ce (mass......
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and Electrical Engineering, Central South University, Changsha 410083, China) Abstract: An angle feedback pressure self-regulating system was studied and designed in a complete mechanical and hydraulic way without electric converting. A cam mechanism was used to input and convert the signal of the crane-arm’s angle changing. The input signal, i.e. the radius-changing angle α of the crane arm......
)03-0694-05 Analysis of stiffness of taper leaf spring based on contact friction TANG Ying-shi1, CHAI Tian1, HE Jin-jun1, SU Jia-li1, LI En-bao2 (1. State Key Laboratory of Advanced Design... based on contact theory by adding contact elements to the contact surface of each leaf spring, and setting all kinds of relevant parameters, and then the stiffness of taper leaf spring was calculated......
geotextile reinforcement layers in sandy slope and reducing the apex angle of triangular shell strip footings. The results show considerable effect of using geotextile-reinforced layers and decreasing the apex angle on the ultimate bearing capacity of shell foundations. With increasing foundation distance from the slope, the adverse effect of the slope is reduced. However, as the distance decreases......
adjacent disc cutters with different polar angles based on particle flow code (PFC). The influence of polar angle of adjacent disc cutters on rock cracks and stresses under different cutter spacing and penetration was studied. Research shows that polar angle difference leads to the discontinuity of rock-fragmentation process by adjacent cutters. The effect of rock-fragmentation is influenced......