Abstract:本文利用筋混凝土杆件截面M-φ-N关系新的数学模型,推导了同时考虑物理非线性和P-△效应并计及钢筋与混凝土之间粘接滑移影响的杆件切线刚度矩阵,用此刚度矩阵对钢筋混凝土框梁柱单元进行了非线性分析,所得结果与试验结果吻合良好.

Abstract:In this paper a topological structure is introduced in a completely distributive complete polarity lattice. It is a generalization of A. Tarski's algebra of topology and includes both point-set topology and fuzzy topoloy as special cases.

Abstract:In this paper, we study the structural characteristics of a kind of new solid carbide twist drills with three major cutting edges. Several experiments have been done about the cutting ability, machining efficiency, drilling forces, precision and surface r

Abstract:本文研究了注入镍离子并在高真空下经100～700℃热处理1小时的钛电极在5%NaCl+0.01MHCl溶液中的氮析出反应.发现经过热扩散处理的电极的交换电流密度i.比未经处理的电极提高两个数量级.这种结果是由于电极表面镍浓度的增加所引起的.

Abstract:The determination of interface stiffness and damping of machine-tool structures is one of key problems to dynamic analysis of machinetools. Based on references [1], a method to identify interface dynamic parameters of machine-tool structures using measure

Abstract:The methods for measuring and denoting pearlite interlamellar spacing are described in this paper. we discuss that if it is seasonable to characterize pearlite interlamellar spacing by parameter Smin. The conclusion is: S_t distribution or S_t is the repr

Abstract:By proposing the concept of the maximum effect, this paper set up a new effective method of experiments design by using simple statistical calculations. The method has improved the direct-viewing analysis and the variance analysis of the orthogonal design

Abstract:Belt grinding has been rapidly developed abroad since the 1970s. This paper, based on a survey of studies on the abrasive belt oscillatory devices at home and abroad, proposes a new-type abrasive belt oscillatory device with eccentric cylinder controlled

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Abstract:This paper describes a method to design the computer software used for fully automatic wastewater COD determining. The program chart and some practical skills in programming are considered too.

Abstract:In this paper we develop homogeneity theorem in frequency domain analysis to sinusoidal alternating current circuit by hybrid parameter matrix, and apply the theorem to the analysing and calculating of complex ladder networks.

Abstract:A automatic control system based on microcomputer for gas forming machine is presented. A fuzzy control self-organizing algorithm, which has been used in gas forming machine, and the design for hardware and software of control system are also described.

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Abstract:In this paper, a new method for analysis of residual stress is presented based on acoustroelasticity theory and one-demensional inverse problem theory on sonic velocity. By using ultrasonic tesing instrument and inverse calculation of sonic velocity, the

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Abstract:In this paper,we consider the collinearity measure among the columns of the(yX) matrix in regression model and develop a diagnostic for the detection of collinearity-influential observations.we proved that this diagnostic is coincident with Cook distance

Abstract:In this paper we study the semilocal convergence of the Newton method for nonlinear complementarity problems, and the convergence theorems of Kantorovich type or Mysovskii type are obtained. Also, a numerical example is given.

Abstract:In this paper we obtain some sufficient conditions for the oscillation of all solutions of a kind of second order neutral differential difference equations, and study the asymptotic behavior of nonosscillatory solutions.

Abstract:The spaces of the functions generated by Block, proposed by M.H.Taibleson and G.Weiss in 1982, have been studied by a few scholars. On that basis, we study the properties of Block spaces with high order cancelation. A sufficient and necessary condition fo