Applied Mechanics and Materials Vols. 536-537

Abstract: To analyze the impact of components operating environment and micro-grid on the distribution network reliability evaluation, the characteristics of components failure rate changes with operation condition are researched, and the full life cycle of the time-varying failure rate model of non-power components is built; reliability model for co-generation of hybrid, photovoltaic and energy storage system is introduced, as the power output of photovoltaic and hybrid generation is stochastic; the reliability of modified IEEE RBTS is evaluated by the built model and sequential Monte Carlo simulation method after load failure effect table is established by the reachability analysis method, the application of the proposed method to calculation example verifies its effectiveness by comparing and analyzing the reliability indices in different situations.

Abstract: The power plant boiler is one of the most important facilities in thermal power plants. The thermal efficiency of power plant boilers is the index. This paper discusses the relationship between the boiler thermal efficiency and the coefficient of excess air via two methods, one is called the simplified calculating formula and the other is the calculating formula according to the The People's Republic of China national standard power plant boiler performance test procedures. According to the proposed methods, by solving the same optimal problem, optimum excess air coefficients are obtained. Then a comparative analysis is given. Moreover, an improved way for saving calculation time to get the coefficients of the mixed coal in the so called simplified calculating formula is developed.

Abstract: By analyzing the relations of the excess air ratio to heat loss due to exhaust gas, chemical incomplete combustion and combustibles in refuse, the traditional method for solving the optimal excess air ratio is improved. A correction factor is proposed for heat loss due to combustibles in refuse, making the solving method more accurate, which is of great importance for improving the combustion efficiency of the boiler.

Abstract: In this paper, By using a large common ABAQUS finite element software to simulate a hospital,s deep foundation pit excavation process in Changchun, Contrasting respectively pile-anchor retaining structure which had been adopted in the project with pile-strut bracing structure. Obtaining stress and deformation of soil and the stress and deformation of pile under the two supporting types, Analysis of the two supporting types feature only from the perspective of the force and deformation in foundation soil and piles, To provide a reference for future support in deep foundation excavation work.

Abstract: Digital building methods and means to change the performance of traditional architecture, design and manufacturing to effectively integrate together. It emphasizes the process of design, attention to the interaction between the factors, is a computer designed, this paper studies the factors that influence the index construction site building sunshine, environmental noise, natural ventilation, insulation, etc. into the internal logic of the language of the computer, then architectural form can be generated by a computer, through constant revision and feedback, and ultimately establish optimal architectural form.

Abstract: The Strategy of Indoor 3D Fine Modeling is discussed in the paper. The element task of data acquisition, image processing and texture mapping are finished though some different tools. Then, three-dimensional visual modeling of a laboratory in Nanchang Hangkong University is realized with the application of the key technologies about modeling. Significantly, the indoor application of virtual reality will be promoted. The influence of model fineness on system operation speed and visual fidelity during the modeling process is tested, and the modeling strategy is proposed.

Abstract: The probability of S-N curve is one of the basic material fatigue reliability analysis and design. Determination of S-N curve is the basis of the fatigue life of obedience lognormal based on the application of statistical methods to fit the experimental data obtained fatigue. This paper studies the construction of reinforced Fatigue S-N Curves overloading effect on the structural performance of the bridge. In this paper, the fatigue reliability theory as a useful supplement, has some theoretical significance and value of work.

Abstract: With the experimental data of positioning precision of high-speed precision NC machine tool, a linear mathematical model of positioning error is established. Based on gray model and Cauchy problem formula, a nonlinear mathematical model is also established. The two models are evaluated by fuzzy comprehensive evaluation method to find the optimal prediction model. Compensated with a selection of positioning error compensation model, the confidence interval of 0.95 of positioning error is less than 3μm, meets the design requirements of the machine tool.

Abstract: The three-dimensional roaming system of landscape design and development in this paper based on the analysis of virtual reality technology and landscape characteristics. the system is to achieve a multi-view, multi-scenes tour. Further proposed of virtools technology significance in the garden is put forward and specific applications of virtual reality technology in landscape design are put forward.

Abstract: Landscape dynamic roaming produced according to drawings on a computer to simulate the real environment of the virtual landscape, the evolution of the past, we changed the traditional paper model or three-dimensional model of the digital model through digital technology to simulate real environmental landscape in the computer. In this thesis, a three-dimensional computer architecture design methods, the performance of the method proposed three-dimensional landscape design, engineering calculated by the environmental performance of buildings with different fiber, help to improve the level of digital three-dimensional architecture.