Abstract:In this paper, we describe the fundamentals, the installation and the process of the ultrasonic pulse method for inspecting the cast-in-place pile. The changes of the transit time, amplitude (or attenuation) and waveform of the received signal occuring wh
Abstract:The NGW planetary redncer is a planetary speed change device widely applied in the mechanical industrial area. Its desigh is rather complex, In this paper, the fuzzy optimal model for this reducer is proposed and optimized according to the principle of fu
Abstract:The adsorption of deuterated methanol (CH_3OD) on Si (111) surface has been studied by means of thermal desorption spectrum (TDS). The desorption spectra of H_2, D_2 and HD have been analyzed in detail and compared with each other. Their desorption energi
Li Jiabao Li Cunquan Cai Songbai
Abstract:In this paper, the shear-lag effect of the tall frame-shear wall structures is studied with the plane stress theory. The methods and the results given in this paper are very useful to engineers and designers.
Abstract:A semi-energy method to analyse the buckling behaviour of edge-stiffened plates under combined compression and bending is presented in this paper, One unloaded edge of the plate is restrained elastically against rotation and the other is stiffened by a st
Abstract:The distribution of bending moments in coupled shear walls with or without step-changes in thickness due to lateral loads is proved to be invariant. The deflection curve is is obtained directly by numerical integration instead of Hetenyi's method of initi
Abstract:This paper discusses the applicatin of CAD (Computer-Aided Design) technique to the design of plumbing engineering. With the support of IBM-PC/XT/AT computer, BASIC program language as well as AUTOCAD software, the PSCAD (Computer Aided Design of Plumbing
Abstract:The homogeneous solution of the differential equation for the shear lag in thin walled box girders is taken as the displacement pattern of finite element. Based on the variational principle, a finite segment method is proposed for analysing the shear lag
Rao Tianzan Department of Civil Engineering
Abstract:When the pier top of a bridge or the rigid-framed structure is under the action of a loading, its superstructure and substructure will be Subject to the force and be deformed simultaneously. In this paper, the elastic resisting force of the earth to the f
Abstract:In this paper, the free vibration differential equations of frame-shear wall structures are derived with the help of the theory of the beam with two genralized displacements, and the frequency equations and mode functions are obtained. In the derivation,
Luo Chongchang Liu Luxiang Xu Shiliang Zhou Lianhong
Abstract:The abrasive belt surface grinding is a new technique with bright prospects. However, the precision flatness of the product is still a key problom, which has not been solved yet. In this paper, basing on a large number of experiments we analyse the possib
Yi Deming Huang Zhuxi Yang Shouzhang Zhou Haiping
Abstract:In this paper, the structural properties of new HSS heavy cut twist drills are simply explained. Several experiments have been done to investigate the axial thrust force,the cutting moment of torque,the machining efficiency, the precision and the surface
Abstract:In this papery, a NC automatic programming system on a microcomputer is developed for machining a group of holes. In this system, the interactive computer graphics is adopted, the location and the shape of holes can be displayed on the screen and at the s
Abstract:In this paper,We further analyse the exchange files(.DXF files)of graphics in AUTOCAD. We also elaborate how to turn the exchange files of graphics into the compressible files of graphics.
Abstract:The general performances of the DC precise temperature control circuitry have been reported up to now. But as the circuitries practically designed are varied, it is necessary to study in detail the performances for each kind of circuitry, In this paper, a
Zhu Yuanbao Xie Qingji Zhou Mingcheng
Abstract:The formal potentials and the numbers of electron transferred of the redox systems of Fe(CN)_6~(3-)/Fe(CN)_6~(4-) and methylene blue were determined with a Long-Path Length Thin-Layer spectroelectrochemical cell. The results obtained from our experiments
Abstract:This paper addresses the method for producing calcium phyticacid. It studies the effects of leached solid-liquid ratio, temperature, time, acid concentration and neutralization agent on the yield. Under the appropriate conditions, the total yield of the r
Abstract:In this paper, the critical point theory is used to deal with the existence of nonzero solutions for the natural boundary value problem of second order quasilinear elliptic systems.
