Advanced Materials Research Vol. 510

Abstract: A substantial increase in demand of paper causes a severe shortage of wood, paper recycling have become increasingly important; Deinked pulp flotation column has the features of less site area, good treatment efficiency, easily control and so on, which can be wildly used in fiber recycling in abroad. This thesis uses the working principle of ore dressing to recycle secondary fiber in order to apply flotation column in wastepaper recycling. And meanwhile this article primarily study on deinked pulp flotation column which is imported from Canada, and drawing 2D maps of flotation column, Meanwhile comparing the application of image enhancement techniques in bubble dimension measurement of deinked pulp flotation column.

Abstract: This paper reports a literature review on the development of computational software system for creep damage analysis for weldment. It starts with a brief review on the creep damage problem in weldment and the computational approach; identifies the need for computational approach and the un-availability of such computational system; further details on the preliminary development progress of a transfer programme and constitutive equation subroutines. This paper contributes to knowledge to the development of computational system for creep damage analysis.

Abstract: This paper reports a review on the computational (finite element) software for creep damage analysis. Firstly, it summarizes the current state of how to obtain such computational capability then it concludes with a preference of in-house software. It further reviews the validation practice. Finally, it completes with an outlines of the approach to be used in the developing in-house FE software.

Abstract: To explore the deflagration possibility of the warship cabin filled with fuel oil under impact of high-speed fragments in the condition of room temperature, experiments were carried out employing the small aluminium oilcans filled with fuel oil. Response processes of the oilcans were observed with the help of a high-speed camera. The disintegration as well as flying scattering of the oilcans were analyzed. The reasons for atomization of the fuel oils were presented. Finally, the deflagration possibility of warship oil cabin was analyzed. Results show that the pressure inside the oilcan is quite great under the impact of the high-speed fragment, which makes the oilcan disintegration and flying scattering. Simultaneously, fuel oils inside the oilcans are atomized quickly followed by ejected in front and back directions. Under the same condition as in present tests, deflagration will not occur for fuel oils used by warships. Experimental results will provide valuable references for the deflagration analysis of warship fuel oil cabins subjected to the impact of high-velocity fragments.

Abstract: Related to the technological field of Photographing and Shooting Support Device, a Photographing and Shooting Device Delivery System includes shooting track and its Device Case. A shooting track covers at least a set of track-flexible track units. Each single unit in the meantime owns two main tracks and at least two horizontal track axes which inset between the two main tracks. The horizontal track axis can meet the needs of the length-adjustment devices in stretching out and drawing back the length of axes. A single Shooting Track Device Case consists of a Roker, Case itself, two Pulley Mechanisms that attached to the bottom of the Case, as well as a position device that has the Rocker fixed. The Rocker can take apart and connect with the Case through Position Device. At least one axis moving mechanism is attached to the Pulley Mechanism Device, which can collapse the length in order to the change of axis. In doing so, it will not only cut down the expense but also save labor. By replacing the tripod spider in positioning through the Rocker, it can boost enormous convenience, make shooting in a low angle into a reality, and occupies relatively a smaller space compared with the tripod spider.

Abstract: In this paper,the model of the trident chamfer, which is the twin tripod sliding universal joint used in small rolling mill, is created by the software Solidworks, and the statics has been analyzed by using the software ANSYS Workbench. The stress contours diagrams and the deformation contours diagrams of the trident chamfer are obtained,so as to arrive its stress distribution and deformation. So the maximum stress concentration parts of the trident chamfer are known by being analyzed. Similarly, The maximum deformation concentration parts are obtained. All above of this provides the theoretical basis for the further study of twin tripod sliding universal joint, especially in the improvement of the structure as well as the heat treatment of the material.

Abstract: The paper, importing the three-dimensional solid model of twin tripod slider universal joint built by drawing tools-SolidWorks into multi-body dynamics software, analyze the force state of the interaction between the moving parts, derive the motion rules of the key components on condition that friction and resistance torque. Which provide a solid theoretical basis for the studies in the later part of dynamics characteristics and fatigue characteristics.

Abstract: Using finite element analysis software ANSYS Workbench module to do statics analysis of the Improved Twin Tripod Sliding Universal Joints ,it can get the middle pole of the trigeminal direction stress cloud pictures, and the greatest stress place after analysis, and can provide the basis for further improved structure coupling.

Abstract: This paper with Siemens S7-200 PLC as core controller, has realized automatic transmission device of waste automatic test. The system hardware, software design are described, and using WinCC Flexible configuration software on human-computer interface configuration, to achieve the production line equipment real time control and status monitoring. Finally, the summary of the thesis, and put forward some further research prospect.

Abstract: RV (Rotate Vector) transmission is a new precision transmission system. In order to improve its accuracy, we study the RV transmission system. It is researched in comprehensive factors including displacement errors, elastic deformation (static transmission error, design transmission error), gear meshing errors, backlash of gear, time-varying mesh stiffness, mesh damping, bearing stiffness, torsional stiffness of input shaft, etc. The mathematical and mechanical model of dynamic transmission accuracy is established by the concentrated mass method and the dynamic substructure method. Then, the meshing force of each part is analyzed in RV reducer. The motion differential equation of RV drive system is obtained, which lays the foundation for the calculation and analysis of the transmission error.