Advanced Materials Research Vols. 532-533

Abstract: Applying structural theories of series connected robot, the joint coordinate series connected robots were finally determined as the design scheme. The basic structural parameters of stowage equipment of cotton bundle were determined on the result from workspace of clamp compared with the room which the stowage was occupied. The controlling arithmetic of stowage equipment of cotton bundle was inferred and educed, which had built the foundation of automatization of system.

Abstract: One of the most significant components of aircraft design is the wing, the wings are the main lifting surfaces that support the airplane in flight. The structures of wings must have enough strength and rigidity to ensure the safe of the aircraft. Usually, the displacements of the structures are calculated by using finite element method. But it is very difficult to select a reasonable finite element model to approximate the actual structure. In this study, two models are adopted to calculate the displacements of the wing structure. The first is a model of rod and shear plate, the second is a model of beam and shell. The disadvantages and advantages of two models are discussed. As seen from the comparison with the test date, two models proposed are both feasible to analyze the wing structure.

Abstract: Honeycomb ceramic is the key component of the regenerative system. The numerical simulation was performed using FLUENT, a commercial computational fluid dynamics (CFD) code, to compare simulation results to the test data. The regenerative process of a honeycomb ceramic regenerator was simulated under different conditions. Experiments were carried out on honeycomb regenerators that are contained in a methane oxidation reactor. The calculated temperatures of flue gas inlet were compared with the ones measured. The tendency of the temperature is the same as the experiment.

Abstract: Ceramic honeycomb is a key component of high temperature air combustion (HiTAC) system and the three-dimensional numerical model is established which is for investing unsteady thermal process in honeycomb regenerator. The start-up period of honeycomb was simulated by means of computational fluid dynamics (CFD) software; the outlet temperature were obtained. The work in this paper provides a theory basis and guide to the exploitation and appliance of HTAC system and the results of the numerical calculation can be used as the foundation of engineering design.

Abstract: To solve rolling bearing type selection in engineering design, with the development tool of Visual LISP and parametric design method, module programming is used to develop an integrated rolling bearing type selection and graphic resource system that accords with national standards and design process in machinery industry. According to the Latest Bearing Manual and newest National Bearing Standards, the bearing performance analysis algorithm module and Access databases of rolling bearings are established. Under the controlling of a process management module, AutoCAD is connected with Access and the data is queried in the Access databases. Thus, the designer is guided to accomplish the rolling bearing type selection step by step according to its performance requirements. In addition, the system integrates the bearing graphic resource module and according to the user requirements, the system completes the detail drawing of the rolling bearing automatically. The system interface established with DCL is easy to use and accords with engineering personnel’s habits. The system can be extended to include other rolling bearing type selection and graphic resource system. It is proved that the system can improve product design efficiency and quality.

Abstract: This article take the Hainan Province Chengmai Datang bridge as an example,based on the scene test result and describes reason which its present main plant disease and forms.The union finite element analysis, compares the theoretical calculation and the dead load test result, makes the evaluation to its present supporting capacity condition.And according to the test result, will put forward the proposal to the reinforced concrete double-curvature arch bridge in the future operation management and the reinforcement.

Abstract: In this paper, sun deep foundation works as background for the pit excavation process are charged to protect the structural deformation and earth pressure traits were studied, and the use of the GTS large-scale finite element software, the actual works in the excavation process in a step-by-stepthe displacement field, the internal force distribution of the analysis, management is deep foundation software and GTS software to calculate the results were compared, focusing on the supporting structure of the deformation and its influencing factors, and come to some meaningful patternsprovide a meaningful reference for similar projects.

Abstract: In order to study behaviors of underground mine water inrush spreading, the multiple-phase LBM based on finite-volume particles and point-particles applied to create the LBM-Lagrange simulating model of underground water inrush spreading with silt. The simulation result shows that the model can get the visual information of water-sand inrush speed, water-sand pressure and distribution of water-sand phase. Therefore some effective alternatives can be made to control underground mine water inrush.

Abstract: This paper for the shortcomings of conventional BP algorithm which has slow convergence and falls into local minimum easily, the nonlinear self-feedback term with chaotic mechanism is introduced into this algorithm. Thus chaotic BP algorithm (CBPA) is given. The weight of fuzzy neural network (FNN) is trained and learned by using it. Thus an introduction-type fuzzy chaotic neural network (IFCNN) is constituted. Then simulation of nonlinear system based on IFCNN given is proposed. Simulation results show that the designed IFCNN has the same and complex dynamic characteristics with chaotic system, which has good modeling capabilities for nonlinear system.

Abstract: In order to analysis and study the factors influencing of measuring the rifle recoil, consider the different methods of support, based on rigid body dynamics equations and collision theory, three kinds of rifle dynamics model, which included the holder, standing and the prone position had been established. The rifle recoil curve of the different conditions had been calculated, analysis of the effects of different methods of support on the measurement of the rifle recoil.From the theoretically clarify the recoil is not a inherent properties of rifle.