Applied Mechanics and Materials Vols. 602-605

Abstract: Cylinder blocks are the most important parts of engine, and their qualities will fundamentally determine the efficiency of engine. In this work, the casting process of K19 engine cylinder block was studied. A casting process was designed and assessed by the numerical software MAGMA to produce cylinder block castings. An actual experiment of casting was carried out and the mechanical properties of the casting were examined. The simulation results show the liquid metal smoothly fills the casting mold and no shrinkage cavity and porosity are formed in the castings. The cylinder block produced by the actual experiment exhibits superior mechanical properties to common ones, which proves the casting process designed is suitable for producing high quality cylinder block castings. The research shows that numerical simulation can provide very useful guidance for the production of castings

Abstract: In present work, the distribution of electric field strength on the surface of work piece was analyzed through ANSYS and theoretical equation. Moreover, the attractive force acting on particles that disperses in ER polishing fluid was calculated. A series of basic experiments were conducted, it is aimed to find out the effective process parameters on the surface roughness using the work piece as electrode. Vehicle handling directional stability has been more and more important, experiments for steering wheel corner step input response, steering oil tank response property, steady state turning and steering angle of all steering wheels were conducted in this paper, the experimental results show that multi-wheel steering system can fulfill its function very well and reach target angle, it provides a new method for researching for the vehicle handling directional stability.

Abstract: To the YCD4B54 diesel engine design and development process, the key techniques and problems should focus on the design and development of YCD4B54 diesel engine, which will provide the beneficial reference for the other similar products design and development.

Abstract: A two-dimensional finite element mathematical model of rough rolling in "1+4" hot continuous rolling of 5052 aluminum alloy was developed by using finite element software Deform, The temperature and effective strain distribution of the strip in different process parameters has been investigated in by simulating the mathematical model in different simulation conditions. The process parameters such as rolling speed, initial temperature, contact heat transfer coefficient between work roll and strip have been considered. The simulation conditions were built by the means of orthogonal experiment. The process parameters, which can make the temperature and effective strain of the strip in a relatively uniformity distribution, were achieved by analyzing the simulation results under different simulation conditions. To judge the uniformity of the temperature and effective strain distribution of the strip quantitative in different simulation conditions, standard deviation has been used as a criterion.

Abstract: This paper analyzes the Petri net modeling of the metallurgical process. For a long process, with the gradual improvement in the process model, the size of the incidence matrix of the model will become larger. In view of the difficulty in calculation for the management and analysis of the entire model caused by the enlarged model size, this paper studies the algorithm for petri net model decomposition and a long metallurgical process is decomposed into two or more subnets for analysis of the process. Examples are used to demonstrate the effectiveness of the model decomposition algorithm.

Abstract: In this paper, electromagnetic field distribution adjacent to the aperture is analyzed to help deducing the coupling principle of apertures. The aperture is located on an infinite plate to avoid the effect of other structures. Taking advantage of high-resolution standard finite-difference time-domain (FDTD) simulation, it is possible to observe the electromagnetic field distribution adjacent to the aperture. From analyses, it can be seen that the electromagnetic field component is dramatically varied adjacent to the aperture, and conclusions drawn here is helpful to deduce the coupling principle of apertures.

Abstract: This paper aim at the ZA type car synchronous belt, using the CATIA software create the synchronous belt and pulleys 3D model, divide synchronous belt mesh with ANSYS software, and import into the multi-body dynamics software RecurDyn and build up the dynamic simulation model of the car synchronous belt transmission through the MFBD (more flexible body dynamics) techniques. Analyzed the transmission performance of the synchronous belt、contact stress of tooth surface and tension stress. It propose the stress distribution between belt and pulley, and the distribution state of the tensile stress. It provide a digital simulation and design method to design the car synchronous belt tooth shape, analysis the transmission performance and select the material of rubber and the reinforcing cords.

Abstract: In this paper, Using rigid-flexible coupling method the auto synchronous belt drive system dynamics model is established. We can make the rigid-flexible coupling analysis of auto synchronous belt drive system through Recurdyn, designed and auto synchronous belt vibration displacement measurement device was developed, measuring the midpoint of the belt in the process of synchronous belt transmission vibration curve of change over time. Has an important value to improve auto synchronous belt transmission stability and reduce the transmission noise.

Abstract: With the actual flight of the airplane model pictured by two theodolites, in this paper, a cross matching method of flight trajectory was proposed on the basis of horizontal projection, which was also checked and simulated in the research. The simulation proved that: within a certain measuring range, this cross matching method can effectively enable the matching calculations to flight trajectories of large numbers of equidirectional airplane models, thus to meet the measuring needs of the airplane model in flight.

Abstract: The composite slurry valve is applied widely in the high pressure mud shipping tube because of maintenance easily and disassembly. Composite slurry valve plays a vital role, which combined application is more; ram is one of the important components of composite slurry valve. But deflection is easy to occur in the seal plate of the composite slurry valve, so as to make sealing failure. This article mainly aims at the seal plate has carried on the design and analysis, finite element modeling, and study the corresponding constraints, in the process of loading method. It is very important to improve structural design and performance of entity modeling and finite element analysis of the gate valve. Aiming at present situation and development trends of CAD and CAE technology of oil field gate valve, using Sold Works and ANSYS software seamless link, three dimensions modeling to the gate valve, virtual assemble and finite element analysis were carried out successfully. According to the analysis result, the improvement scheme based on the theory analysis was put forward, thus offering the theoretical basis for the whole structural optimization design and performance improvement of the gate valve.