Advanced Materials Research Vols. 690-693

Abstract: Fluidized beds are widely used in the factories. However, the traditional heating methods can not meet the actual needs. Then we propose a new type fluidized-bed, which can effectively resolve the problem occurred in conventional fluidized-bed. The temperature of the reaction gas can be distributed uniformly in the new type fluidized-bed, the bed pressure drop is relatively stable over time. The above situations are conducive to the reactions stability, and reduce the occurrence of side reactions as well.

Abstract: A prototype of hydraulic free piston engine (HFPE) is being designed and constructed by Jilin University to achieve direct hydraulic wheel-drive and replace the current hydraulic drivers. This paper is aimed at modeling and analyzing the scavenging system for the HFPE. Based on the prototype engine E150, two stroke scavenging system for HFPE has been designed by analogy, the gas flow of HFPE during the scavenging process is simulated by using the commercial CFD software AVL FIRE. So some key scavenging parameters and flow field were obtained, the simulated results indicate that scavenging efficiency of loop scavenging system can meet the design requirement, it lies between perfect displacement and perfect mixing scavenging, and keeps decreasing while the operation frequency keeps increasing.

Abstract: Comparing with the characteristic of the two materials using on the crankshaft firstly, list their advantages and disadvantages; Secondly,expounding the effect of the crankshaft journal fillet rolling for radial runout, and apply HyperMesh、ANSYS and processing data to analyze and verify, thus drawing a estimated mathematical formula that solve for optimal rolling force on the basis of the depth of rolled hardened layer; According to the actual processing data and the optimal rolling force, proposing the improved crankshaft journal radial runout distribution,Then verify the feasibility of the estimated mathematical formula; The final result plays a a positive role to that reduce the processing costs of crankshaft and improve the crankshaft life.

Abstract: The process parameters of electrical discharge grinding,such as workpiece polarity, pulse width, pulse interval, peak current, peak voltage, all have influence on GH3536’s surface roughness.General method is difficult to determine the relationship between the process parameters and the process indicators. This article established a artificial neural network model of EDG GH3536 surface roughness which can forecast. Neural network algorithm use BP algorithm, the network structure is the 2-4-1.

Abstract: The Finite Element Model (FEM) study of the flange repaired cut-out laminates were carried out in this work. The FEM studies on the reinforcement and unrepaired structure is focused on simulation of the tensile test, damage evolution and the predicted failure loading. The test results indicated that the strain value decreased as the size of load is. The simulation results show that the tensile strength of the reinforcement is larger than that is unrepaired. Compared the results of damage evolution with four kinds damage criterion, the major failure model is matrix cracking under transverse tension appeared in the layers.

Abstract: According space track-service technology，the dynamic virtual prototype has be built，using ADAMS-Viewsoftware for the rods and cones type docking mechanism. And focusing on the key influencing parameters we have finished dynamics analysis.

Abstract: Geological model controlled by sedimentary microfacies can not able to accurately reflect the actual seepage characteristic, How to apply the static flow units to the dynamic reservoir numerical simulation is the advancing edge of petroleum industry. The method of reservoir geological modeling controlled by flow units is proposed. Firstly, the 3D models of flow unit should be build, secondly, the 3D porosity and permeability model are established controlled by the model of flow unit, thirdly, the 3D fluids saturation model is calculated by Leverett J function based on porosity and permeability mode. Selecting different relative permeability curves according to different flow units in history matching. which realizes the dynamic (development geological) and static (reservoir engineering) combination. The oilfield examples shown that the velocity and precision of history matching can be significantly improved by using the method mentioned. Flow units were proposed by Hearn in 1984^[. Study on flow units, which could not only deepen the understanding of reservoir geology, make reservoir evaluation more reasonable and reduce the heterogeneity impact on oil development, but also could be of great significance to improve oil field development effect especially for tertiary oil recovery^[. Previous studies mainly focused on defining the concept of flow units, divide method of flow units and so on, but few studies on how to apply the study results of static flow units to the dynamic reservoir engineering and reservoir simulation^[3-. Our research aimed at how to connect the static flow units and the dynamic reservoir simulation closely so as to achieve "dynamic and static combination".

Abstract: Considering the difficulties of optimizing the operational parameters of the nonferrous metallurgical process, a new operational pattern optimization method is proposed, which introduces product quality and energy consumption index. Principle Component Analysis (PCA) is used to simplify the operational patterns, reduces the data dimension and overcomes the low efficiency of the operational patterns caused by huge pattern database. After the attribute reduction of PCA, the weighted attribute coefficient of the new variable is solved and a new hybrid similarity calculation method is presented, which greatly improves the speed and accuracy of pattern matching. When the pattern is reused, each matched pattern weight can be identified according to the energy consumption, which is helpful to lower the energy consumption of the nonferrous metallurgical process. Simulated experiments are carried out in terms of the real production data. The Simulated results indicate that this novel method is a promising and effective technology to be applied to the real industrial process to reduce the zinc dust consumption and increase the qualified rate of the outlet cobalt ions.

Abstract: In this paper, the spectral element methods are adopted to solve the eigenvalue problem of hydrogen atoms electronic structure. A local refinement algorithm based on spectral element approximation is constructed to solve the problem on different domains. Numerical experiments indicate this algorithm is highly efficient.

Abstract: In this paper, a novel multi-level image matching-based method is proposed for the PCB components detection. After the registration of PCB image, a quick coarse matching is carried out to find the similar region with the standard component image in the certain region; and then a precise matching is conducted to judge whether it is the specific component. Our experimental results indicate this method can detect common PCB components with high speed and high precision.