Advanced Materials Research Vols. 756-759

Abstract: In recent years, frequent earthquakes have caused great casualties and economic losses in China. And in the earthquake, damage of buildings and the collapse is the main reason causing casualties. Therefore, in the design of constructional engineering, a seismicity of architectural structure is the pressing task at issue. Through time history analysis method, this paper analyzes the time history of building structural response and then it predicts the peak response of mode by response spectrum analysis. Based on this, this paper constructs a numerical simulation model for the architecture by using finite element analysis software SATWE. At the same time, this paper also calculates the structure seismic so as to determine the design of each function structure in architectural engineering design and then provides reference for the realization of earthquake-resistant building.

Abstract: A noise model of underwater vehicle engine startup is proposed in this paper. Based on this model, a feature extraction method for time variety spectrum of engine startup is introduced. This method using hough transform to cumulate the points of the same spectrum lines in time-frequency space and detect the peaks in transform space. Simulation and data processing result show that the method can estimate the parameter of spectrum lines precisely.

Abstract: This paper describes the application forms of building integrated with solar energy. We explain a solar water heating system; its solar collectors and water storage tanks are placed together. We discuss another solar water heating system, its solar collectors are placed together but its water storage tanks are placed in every resident's home. This paper also introduces the wall-hung SWH and the application of solar refrigeration and solar heating. At last we analyze the problems of the development of solar water heater integrated with modern architecture.

Abstract: With the rapid development of complex adaptive systems, traditional modeling and simulation methods have been unable to meet the need of accurate modeling of complex adaptive systems. Therefore, we need a way to accurately describe the characteristics of complex adaptive systems modeling and simulation. Multi-Agent modeling and simulation methods focus on the study of the interaction between multiple subjects. It is an effective way to study complex adaptive system. This paper analyzes the multi-agent modeling process, sets up a rumor spreading model of a small social network through multi-agent modeling and simulation methods,. The simulation results verify the correctness and accuracy of the model.

Abstract: The supercritical airfoil has been widely applied to large airplanes for sake of high aerodynamic efficiency. But at transonic speeds, the complicated shock-induced separation on the upper surface of supercritical airfoil will change the aerodynamic characteristics. The transonic flows over a typical supercritical airfoil CH were numerically investigated in this paper, in order to analyses different shock-induced separation structure. The two-dimensional Navier-Stokes equations were solved with structure grids by utilizing the S-A turbulence model. The computation attack angles of CH airfoil varied from 0oto 4o, Mach numbers varied from 0.74 to 0.82 while Reynolds numbers varied from 3×10⁶ to 50×10⁶ per airfoil chord. It is shown that with the attack angle increases, the separation bubble occurred on the upper surface first, then the trailing-edge separation occurred, the trailing-edge would separate totally at last. The different separation structure would result in different pressure coefficient distribution and boundary layer thickness.

Abstract: The current simulation research on military tactics operation of EW Aircraft mainly takes meatures of function simulation based on radar equation and jam equation, model on scout receiver and jam transmitter, which not only can not reach the precious and resembility of signal simulation. but it also construct system-system Simulation system. Aiming at such problems, adopting signal simulation, considering current development of simulation technique and the request of air battle to EW, the battle simulation system of EW Aircraft is presented based on high level architecture. And the key techniques of composition and development process of federation are studied. Simulation is carried out whose result verifies the efficiency. The successful exploitation of the system will supply the analyses evaluation of the whole EW Aircraft warfare simulation system efficiency with performance and basis, which has active sense for the tactics use of EW Aircraft.

Abstract: Against the deflect that the existing fluidic gyroscope airflow channel structure was easy to cause the flocculating flow. This paper presented a kind of elliotic-drum flow cavity structure. Using the finite element method, calculated the flow field in the closed cavity at different angular velocity input. The results showed that the gas flow path of the main airflow distribution was streamlined, there did not form the vortex area which could reduce the energy additional losses, when the angular rate input changed, then the jet flow field distribution didnt keep equal and symmetrical, the jet speed difference at the hot sensitive wire changed with angular velocity, thus revealing the drum-shape cavity fluidic gyroscope sensitive mechanism.

Abstract: The heat treatment technology is a weak link in engineering technology in china. For the traditional microwave heat treatment system, the microwave electric field inside the oven can not be well-distributed. In case of the traditional oven heat treatment system, however, the materials dried process is very long. In this paper, we introduce a microwave-oven hybrid heat treatment system related to industrial production line, the proposed with both advantages of high efficiency of microwave and good thermal distribution of the oven, which can be applied for the determination of degree in heat treatment process according to the concentration of the produced gases. Based on the computer and LabVIEW, the control system can control the whole process of heat treatment directly and accurately in real-time.

Abstract: t is important to increase drilling speed and reduce drilling costs that select the rational bit. A common method is used to select bit types based on the rock mechanical parameters of the drillability. The rock mechanical parameters which are the compressive strength, shear strength, rock hardness and abrasiveness have been not considered during select bit types of carbonate formation, so that the selected bit types are not practical. The rock mechanical parameters of indoor test are costly, and the data points are not continuous. In view of this, these rock mechanical parameters are calculated using logging data that reflect the rich rock mechanical properties. Combined with the manufacturers instructions of bit types, these rock mechanics parameters were clustered using fuzzy clustering method, and then the bit types are selected according to the clustering results. This method was applied to the bit selection of carbonate formation in the eastern of Sichuan, the results show that this method can effectively select bit types of the carbonate section.

Abstract: Statistical analysis for the data of HC mine gas emission rate by using grey relational analysis method, the index system effecting on mine gas emission factors are established with the method and the relational degrees between the factors and mine gas emissions are analyzed. The main factors effecting on mine gas emission are determined based on the size of relational degree by the quantitative analysis. The results show that the method is simple, and provides more flexibility to comprehensive analysis of the statistical data, and overcome the shortcomings of a different dimension data can not find regular. Its useful to find the main control factors effecting on mine gas emission.