Advanced Materials Research Vols. 694-697

Abstract: It is important to analyse the fatigue life of components. We introduced the mechanism of metal fatigue, and systematically discussed the basic methods of fatigue life analysis and its development. The use of nominal stress method and the law of Miner in the fatigue damage accumulation theory are highlighted. The fatigue life analysis for motor base of the glass lifter was completed using this theory on ANSYS Workbench platform and according to the result, structure optimization was completed to make its life longer.

Abstract: By using Solid Edge, the virtual prototype of the steel stripe locking device of the baler can be set up. The kinematics analysis can be accomplished through ADAMS. According to this joint modeling method, the simulation of the parts of the power input and output are analyzed. According to this kinematics simulation analysis, the foundation for the mechanical optimized design of steel stripe locking device will be laid. By this joint virtual prototype simulation, complex virtual prototype mechanism design has a certain practical reference value.

Abstract: A mathematical modal for a new oscillator under Gravity is gived by The Second Law of Neton and proved the correctness by The Energy Method .We obtained a equation for the equilibrium point of system by the definition .We observe the dynamics action by the Hamilton function.Meanwhile the phase trajectories and the Poincaré sections are also presented. The analysis shows the complicated nonlinear dynamics with periodic motion in some special case.

Abstract: ncreasing speed Gear-box is one of the most important components of wind-turbine. Gear design directly affect the operating life and reliability of gear-box. Based on the 1.5MW wind-turbine as the research object in this paper, we optimized the design parameters of Inclined gears, analysed its bending stress reliability, further verified the gear maximum stress and stress position, to provide a scientific reference for making Inclined gears later.

Abstract: High-speed high-precision CNC processing technology plays a very important position in the CNC machining industry,machine disturbance,however,an important factor affecting the machining accuracy,the ball screw feed drive as an important part of the machine directly affects the operating characteristics of the machine.Ball screw drive system,Solidworks,Ansys,Adams the establishment of machine tool,rigid-flexible couping the multibody dynamics model,the dynamic characteristic curve of the machine.Compared with the rigid body model simulation results verify the feasibility of rigid-flexible coupling modeling method,optimized to provide the basis of the structural design of the machine components.

Abstract: Targeting at insufficient data for simulated blast shock of life saving capsule in coal mine which affects its development and design so that structural transient response analysis optimization was performed to analyze strain-stress, shock-produced deformation and spring-back of the new protective crust with compound structure under shock wave. ADINA, a general-purpose FEA program, is chosen to emulate the dynamic response of the protective structure under blasting stress. The analysis results were compared with the dynamic response results of the single-layer protective crust. The result shows that steel defensive structure with aluminum foam buffer behind general steel has a good attenuation characteristic for peak pressure of blast wave. The composite structure with flexible material layer can protect the core of the lifesaving system better from the blast. The simulation experimental environment can be established and reference data can be provided for the design of a life-saving ball system by using numerical analysis methods.

Abstract: The clutch mechanism is the important part of printing machine. At present, cam connecting rod type mechanical clutch mechanism has been used by most of the domestic offset printing machine and its mechanical structure is very complex and its reliability is very poor. So a new type of pneumatic clutch mechanism is designed to meet its technological requirements. For the new mechanism, the motion law of the blanket cylinder can be calculated in the pressing process by complex number vector method and the finite element model has been established, natural frequency, maximum amplitude and mode of vibration of the cylinder can be calculated based on Block Lanczos method. The analysis results show that the relationship between the cylinders is flexible impact at the pressing instant, positioning is accurate, stable and reliable, which meets flexible design requirements. Thus it is important significance to improve design level and the product quality of the domestic printing machine and shorten the gap with foreign advanced printing machine.

Abstract: Taking the sand grab bucket for example, the motion and force situation of the grab mechanism is analyzed with the software SolidWorks. First 3-D model of the grab mechanism was built, second finite element model of grab was built, finally motion and force analysis was carried out with post-processing module. The instance study shows, finite element analysis method based on SolidWorks Simulation helps to improve the quality and efficiency of product design in practice.The results will provide reference for design of grab bucket in future.

Abstract: The parameterized model of one type of Sugarcane Planter’s frame was created in UG, then it was imported into ANSYS Workbench by Proprietary program interface. The frame was static analyzed in two kinds of working condition, and the Strength and stiffness was checked according to the calculation results. Finally, the frame was optimized by Design Exploration module in ANSYS Workbench.

Abstract: The luffing mechanism of reach stacker is the core of big arm lifting mechanism. The hinge point position in it influences directly the comprehensive performances. The mathematical model of three hinge points was established through the force analysis of luffing mechanism, which aims to reduce the maximum force of hydro-cylinder and decrease the oil pressure of hydraulic system. A hierarchical ordering method was utilized to optimize the multi-objective problem. The optimization calculation was presented by using the genetic algorithm in Matlab. Experimental results indicate that the optimization enhance the comprehensive performance of reach stacker. And this also provides important foundation to the parameters design of luffing mechanism.