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Tribological characteristics of C/C-SiC braking composites under dry and wet conditions LI Zhuan(李 专)1, XIAO Peng(肖 鹏)1, XIONG Xiang(熊 翔)1, 2, ZHU Su-hua(朱苏华)2 1. State Key Laboratory of Powder... on reinforcement of carbon fibers and matrices of carbon and silicon carbide, were fabricated by warm compaction and in situ reaction process. The tribological characteristics of C/C-SiC braking......
infiltration process under rainfall conditions was studied in the present work. The emphases are the formation, distribution and dissipation of transient saturated zone. As for the calculation... process inside the residual slope is generally 3D problem. During the rainfall events, the seepage conditions at the slope surface were changed with time. It is a typical unsteady seepage process......
, Nanchang 330063, China)Abstract:For contact dominated numerical control (NC) bending process of tube, the effect of friction on bending deformation behaviors should be focused on to achieve precision bending forming. A three dimensional (3D) elastic-plastic finite element (FE) model of NC bending process was established under ABAQUS/Explicit platform, and its reliability was validated by the experiment......
New Methodological Approach to Investigation of Kinetics of REE Extraction in Nonstationary Conditions () Abstract:The influence of periodical oscillations of the temperature on extraction...) using bulk liquid membrane between two extractors were performed. The mathematical model adequately describes the experimental data. The optimization of the extraction process for separation of REE......
J. Cent. South Univ. (2012) 19: 1859-1868 DOI: 10.1007/s11771-012-1220-1 Nonlinear trajectory tracking control of a new autonomous underwater vehicle in complex sea conditions GAO Fu-dong(高富东... Industry Co. Ltd, Changsha 410100, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: Autonomous underwater vehicles (AUVs) navigating in complex sea conditions......
, the conditions of shale gas enrichment such as hydrocarbon generation, accumulation and conservation were systematically compared. The results show that the original Niutitang formation of Ciye 1 and Changye 1 well can be further divided into Palang and Niutitang formation,which is the same as those with Huaye 1 well. The source rocks in these wells have good conditions of hydrocarbon generation......
velocity and initial billet temperature. The process conditions and parameters for achieving good longitudinal welds quality were found. 2 FE simulation 2.1 Conditions of FE simulation According... geometries. The process variables used in FE analysis are presented in Table 1, and back dimensions of die leg are shown in Fig.2. Fig.1 Tool assembly used in porthole die extrusion Table 1 Conditions......
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with the green roofs are reduced under snow conditions because the snow diminishes thermal resistance of the roof and increases the heat transfer process through the roofs. Key words: green roof; energy... effects on the space below, thereby affecting the R-value of the whole roof system and the heat transfer process through the roof. Therefore, in order to better describe the winter conditions......