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J. Cent. South Univ. (2012) 19: 2016-2021 DOI: 10.1007/s11771-012-1239-3 Coupling model for assessing anti-seepage behavior of curtain under dam foundation PENG Peng (彭鹏)1, 2, SHAN Zhi-gang(单治...-seepage behavior may be weakened by the long term physic-chemical actions from groundwater. According to seepage hydraulics and geochemistry theory, a coupling model for assessing the behavior......
grey model HUANG Jiao-ying(黄姣英), GAO Cheng(高成), CUI Wei(崔嵬), MEI Liang(梅亮) School of Reliability and System Engineering, Beihang University, Beijing 100191, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: A lifetime prediction method for high-reliability tantalum (Ta) capacitors was proposed, based on multiple degradation measures and grey model (GM......
ARTICLE J. Cent. South Univ. (2019) 26: 1619-1636 DOI: https://doi.org/10.1007/s11771-019-4117-4 Factors affecting thin coal seam shearer drum coal-loading performance by a model test method GAO... to study the pivotal factors’ influences on drum coal-loading rate using a model test method. The effects of the drum hub diameter, cutting depth, vane helix angle, drum rotation speed and hauling speed......
, China)Abstract:In order to explore the reason that causes vibratory hammer to "dance" in piling and solve the "dancing" problem, a two-degrees-of-freedom pile-soil mechanical model of piecewise-nonlinearity was established in view of nonlinear vibration mechanics. By numerical simulation based on four order Runge-Kutta method, the impact of soil stiffness, vibration frequency and eccentric block......
friction torque which can be described by a nonlinear static coulomb friction model, i.e.,  ...) Similar to the MSL, the high-frequency gimbal model is treated as unstructured uncertainty. The gimbal is susceptible to nonlinear friction and other nonlinearities. If these nonlinearities are treated......
, and confining to local maximum. There are also deficiencies of response surface model. For example, it is difficult to fit highly nonlinear model of complex relationship. Support vector machine (SVM) is a new... be fitted by nonlinear model of complex relationship with high precision. Multi- output support vector regression (MSVR) is a new algorithm of SVM, whose output is a vector. The solution will take......
为模型总应力;为开关元件的应力阀值;为理想塑性体的应力阀值;和分别为模型第1和第3部分的弹性参数;,,分别为模型第2,3,4部分的黏性参数;n为蠕变指数. 图3 非线性黏弹塑性蠕变模型(NVEPB蠕变模型) Fig. 3 Nonlinear viscoelastic-plastic creep model (NVEPB model) NVEPB蠕变模型中,定义了一个开关元件,该元件的物理意义是... Press, 2014: 3-8. [2] 黄明, 刘新荣. 三峡库区泥质粉砂岩非线性蠕变模型辨识[J]. 岩石力学与工程学报, 2011, 30(S2): 3804-3810. HUANG Ming, LIU Xinrong. Research on nonlinear creep model identification of siltite in Three Gorges reservoir......
J. Cent. South Univ. (2017) 24: 2674-2684 DOI: https://doi.org/10.1007/s11771-017-3680-9 Restoring-force model of modified RAC columns with silica fume and hybrid fiber YANG Tao(杨涛)1, WANG She-liang... Abstract: In order to establish a restoring-force model for modified concrete columns with recycled aggregates concrete (RAC), cyclic loading tests were carried out on five concretes with RAC columns......
model calculations coincided with the results of the DRS-1 direct shear tests. The proposed model also reflected the nonlinear features of the soil-structure interface. Key words: mining subsidence...] the nonlinear elastic-ideal plastic model proposed by LUAN and WU [6], the shear slip model proposed by GAO et al [7], and the damage model [8-11]. In previous work, BRANDT [2] determined that the rigid......
the feasibility of the proposed controller, the nonlinear dynamic model of full-size maglev train with quintessential details is developed. Based on the nonlinear model, the numerical comparisons and related... Numerical simulations In this section, numerical simulations have been performed to demonstrate its feasibility. To improve the credibility of results, the nonlinear model with quintessential details......