1993 volumne 14卷 Issue 01
Li Pingjian; Ding Ziqiang; Zhao Guangtian;
Abstract: This article analyzes the effects of 24 testing of the short beams of abdominal reinforced steel concrete, analyzing the effects of different loads, shear ratio, and cross -high ratio of anti -shear strength, describing the destructive form and destructive mechanism of the test parts. The calculation method of anti -shear strength of the short beam of the abdominal tendon is explored, and the calculation formula and test results in the text are good.
Nie Jianguo; Yuan Yansheng;
Abstract: This article uses the numerical iteration method to calculate the steel -the curved moment of the concrete combination beam section, the curvature relationship and the permissions bending moment. The theoretical denomination of plasticity theory used to determine the limited bending strength of the combination beam. Calculation results and analysis show that the numerical iteration method is an effective method for calculating the curvature of the combination beam section. In the case of known sliding response, the calculation of numerical iterations and numerical points can be more accurately estimated to be incompletely cut into the deflection of the steel -concrete combination beam.
Zhang Leishun;
Abstract: This article grasps the main mechanical characteristics of the explosion of the front cover, and uses approximation methods to get more satisfactory results.
Han Lianyuan; Zhu Anguo; Cha Shijin;
Abstract: This article discusses the influence of micro -gold phase tissue of the welding head and its effect on the growth rate of fatigue cracks. It uses the fissure expansion rate data of the standard sample. Considering the influence of micro -tissue, the fatigue model of fatigue cracks in different regions is used to prepare computer programs to estimate the expansion of the crack. Compared with the experimental value.
Yang Guo Zhan; Miao Tongchen; Yang Ronggen;
Abstract: This article uses amendments to the iterative method. Under the combination of central centralized power and central distribution load, the axis symmetry and linear stability of the edge of the edge of the hard center is fixed, and the P -WM feature relationship is obtained.
Wan Changji; Wang Qishan;
Abstract: A power plant in Henan is a key project of the country’s "July 5th", and the original ground is ups and downs. In order to transform the complex and changeable adverse conditions of the original landform, the landfill is used. In order to improve the physics of the soil layer, the bearing capacity of the foundation increases the foundation, and eliminates the wetness of the I -level non -self -wet trap. This article introduces the basic points of the project’s strong decaying design, and the detection method of ramming effects, and analyzes the mechanism formed by the ground -strong support layer (ultra -hard soil layer) and eliminates the dampness of loessing. It is proven through a variety of testing methods, and the advantages of reinforcement to reinforcement to reinforcement are effective, low cost, and fast speed. It is a reasonable reinforcement measure.
Abstract: This article describes the method of automatically generating network plans for computer, solving the problem of difficulty in network drawing.
Qiao Junzheng; Wang Jinlong;
Abstract: On the basis of analyzing the current status and development trend of dyeing automatic control at home and abroad, for the first time, the T-121 semiconductor temperature sensor is used for dyeing temperature control occasions, so that the temperature measurement accuracy has reached the level of similar foreign products. The single -chip dyeing process control system studied in this article adopts a fuzzy control algorithm and uses a set of solenoid valves as executing elements to achieve quasi -continuous adjustment of the temperature of the dyeing solution. Experiments have proved that this control system can be taken, the performance is stable, the temperature control error is less than ± 1.0 ° C, which can accurately reproduce the chromosomal process temperature control curve.
Zou Changping; Huang Maolin;
Abstract: This article discusses the standards of the crank of the Class III six -shot mechanism and its usage method: study the power of several six -shot institutions; draw several important conclusions; and propose the theory of "the use of the strength characteristics of the IV -level six -shot mechanism".
Chen Yizhen; Guo Shiling; Cheng Aizhu; Zhang Xunliang; Zhang Runji;
Abstract: This article introduces a set of fast. Simple. Simple, simple, and accurately determining the L-Bullstone Crystal of the X-ray powder diffraction method. The combination of non-fixed strength card method with the eighth peak method is combined to achieve the purpose of determining the crystallinity with a relatively simple relative crystallinity method.
Li Hua; Chen Wanren;
Abstract: This article combines the hierarchical analysis method (AHP) to compare the calculations of various risk factors affecting the "CCF" foreign -related factories. On the basis of Fuzzy collection theory, a mathematical model of uncertain variable decision -making issues was proposed.
Zhang Yingxia;
Abstract: This article discusses the volume diffusion coefficient of gas reactions in the micropores of catalysts and Nussen diffusion coefficients in the micro -pores of the catalyst.
Gao Jinfeng; Jia update;
Abstract: This article introduces the principles of the software and hardware principles of the Simplico-type arbitrary waveform voltage, current, and power measuring instrument using an simulated multiplier and MCS-51 series 8031 ​​single-chip microcomputer. The error and correction method of the instrument were discussed in detail.
Feng Dongqing; Xie Songhe;
Abstract: This article proposes an analysis of the optimal control system design method based on the discrete system LQ inverse problem analysis, which obtains an analytical relationship between the linear optimal system opening and closed -loop characteristic polynomial coefficients and the weighted matrix in the secondary performance index. Finally, the existence of the LQ inverse problem solution was analyzed in order to reasonably select the desired closed -loop pole to make it a set of best points.
Lu Yiqing; Yang Songhua;
Abstract: This article examines the bottom distribution as a standard pairing positive distribution, and the large value distribution and the gradual nature of the maximum value of random variable sequences independent and distributed.
Liu Renjie;
Abstract: This article obtains several new combinations such as Heng.
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