Applied Mechanics and Materials Vols. 635-637

Abstract: When strong exercise on human being body, respectively, under knees 30°, 60°,90°, using PRO/E5.0 software to establish the transverse patella fracture and anti-shearing force patella claws 3D models, then the two structure models were assembled and imported into ABAQUS10.1 software to establish the finite element model of patellar fracture fixed within patella claw, and analyzed the mechanical performance in perforce finite element model. Under the same boundary conditions, the maximum displacement and deformation of each components were different at every flexion angle. Compared with anti-shearing force patella claw and AO tensile force girdle, the patella claw with stronger resistance to tension and anti-shearing force was more stable. Deformation and displacement of patella claw in accordance with biomechanical research result that is needed by clinical. Its stability will satisfy clinical requirements for functional exercise.

Abstract: Aiming at the problem that indentation was generated on the forming surface due to the concentration of underdraught points on contour tool path, this paper proposed a method that can obtain a series of uniformly-distributed underdraught points on the contour tool path generated based on STL model in sheet metal CNC incremental forming. In this algorithm the STL model was taken as the input model and the cutting plane through the central rotation axis of model was rotated a certain angle in turn to cut the contour tool path, then the underdraught points distributed uniformly along the workpiece contour can be obtained. The case study shows that the proposed method can effectively generate the contour tool path with the underdraught points uniformly distributed.

Abstract: Current mechanical kinematic animation can’t satisfy the requirements of Virtual Environment (VE) based design. The kinematic animation design in VE development platform does not have high level models and mechanisms, the interactive animation designs and developments are very difficult and time consuming. For these reasons, this paper proposes an innovative method for interactive kinematic animation design and development in VE, including dynamic runtime model and execution algorithm for interactive animation. A complex mechanical kinematic mechanism, that is, the engine assembly, is built to validate the animation technology introduced in this paper.

Abstract: With the study of a certain servo gear transmission system, a three-dimensional parametric design of servo drive system is made based on SolidWorks and its plug-in GearTrax. The model is introduced into ANSYS through a special interface, and the finite element modal solutionsare obtained. Aiming at solving the practical problem that the static linear modal analysis methods fail to meet the working conditions of high speed rotation and frequent variable speeds, this paper proposes an effective way of determining the range of the system natural frequency through figuring out the natural frequencies in two critical states. Thus, it provides an important basis for the credible design of the servo drive system and a reliable theoretical guidance and reference data for its design, use and maintenance.

Abstract: Solar flat-plate collector is an important component in solar-thermal system, and its optimization is critical for the efficiency of energy utilization. In this paper, a comparative study on the thermal performance of solar flat-plate collector was carried out by numerical simulation under the conditions of different thicknesses and materials of absorber plate. The results show that the increase of absorber plate thickness contributes to restraining convection loss. The collector efficiency levels off when the absorber plate thickness reaches a certain value. In considering thermal performance and production cost, aluminum is an optimal material for absorber plate.

Abstract: To solve the issue of machine barrel skewed to one side, when the XJ150×25 was running. Under the conditions that the needs of strength was met, by designed three types of cooling channels and analyzed the temperature field for the barrel by using ANSYS, as well as thermal deformation. The results show that cooling channel of center symmetric form can solve the problem that uneven temperature field causing the barrel to produce thermal deformation. It can guarantee the coaxial degree between screw and barrels and can improve the quality of products.

Abstract: For the bush-burning problem in the course of the engine operation. Taking a certain kind of engine as reference, build a 3D geometric model of the engine-oil flow field in the ideal stable conditions with GAMBIT and conduct a simulation of it with FLUENT. It reveals that we can have an intuitive understanding of the flow state and pressure distribution of the engine-oil inside the clearance between the crankshaft main journal and crankshaft bearing as well as the rod journal and rod bearing which provides basis for a further refining of bearing lubrication system, improving the lubrication method and enhancing the efficiency of the lubrication.

Abstract: Aiming at gear in dynamic analysis simulation system often appears oscillation problem the phase of high-frequency. An method of eliminating the initial loading of oscillation system bases on dynamic relaxation, which is presented. In this paper, preloading dynamic relaxation process was carried out in the gear system. Also, the application method of dynamic relaxation based on LS-DYNA is proposed. and on account of LS-DYNA platform which proposes dynamic relaxation method in the application to dynamic simulation method of gear system. Finally, investigating the efficacy of method by simulation example.

Abstract: Abstract:In this paper ,the finite element model of the lei-ring was established in ANSYS software,the sealing performance of hydraulic support column piston was analyzed.Also,the numerical simulation analysis was made of the impact of column working pressure on the sealing performance,and a series of the integrated equivalent stress and contact pressure images of sealing ring when working were got. From those images,the location most prone to failure can be concluded.All of work can provide a theoretical reference for the design and use of drum sealing ring used on hydraulic support upright column.

Abstract: This design mainly takes pulley as the research object. First collect the data of pulley, bring round the body of the reference point, design the User DCL dialog, then preparing Auto Lisp diver. The procedure involves drawing frame, title bar, shape, tolerance and coarse and so on the surface, generated by the input parameter , you can take the implementation of parts of the system