The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Based on a cab suspension system of a commercial vehicle, a multi-body dynamic model was built on ADAMS Software for the vibration modal analysis. An Experiment was taken for the verification of the model's accuracy. Through the energy decoupling theory, the cab suspension system was optimized. By analyzing the optimized parameters, the suspension's stiffness and position were determined, which gave...
As the complexity of power plant construction process, the virtual simulation technology is applied to power plant construction area. Three-dimension models of the power plant parts are established, and virtual simulation system of power plant construction process is developed. The system simulates dynamically the construction process of all equipments in the power plant. Combined with voice caption...
The development of common characteristics abstracted from flow phenomena is important to enhance computer simulation efficiency and reduce repeated work. In this paper, a hiberarchy of flow simulation is presented firstly. It is intended to provide reusable software components to various professional areas in order to effectively achieve vector field visualization, provided that related parameters...
Blade is one of the most important components in devices such as generating equipments, aircraft engines and turbines. Its surface quality has important influence on the overall performance and working reliability of these devices. In this work, an automatic belt grinding system is designed to satisfy the growing demand for finish machining of blade with high-quality and high-efficiency. The belt...
Submarine hull consists of complicated spatial freeform surface. During the development of submarine design, the design of its body is the important factor which will decide whether this design is successful or not. But the design of complex curve and curve surface is the core in the CAD of submarine body. It is the key skill to speed up the localization and originality of imported equipment that...
In this paper, a novel method, namely contextual routing and navigation, is proposed. This method is based on the author's proposed hierarchical, lane-oriented 3D road network. The key to implement contextual routing and navigation is to adopt cognition-based hierarchical routing strategy and the view-based multi-scale navigation strategy. The two strategies enable users routing on roadway centreline,...
To the issues of business processes changing frequently, heterogeneous system islanded and manufacturing resource hard to reuse during collaborative manufacturing, a service-oriented collaborative manufacturing mode was presented. First of all, the concept of collaborative manufacturing service mode and its characteristics were expounded, and secondly, the model of task unit and service unit for collaborative...
Building hair models and expressing hairstyles are important phases in a simulation system of virtual human. So, to be built a simulation system guarantees quality, proposing an efficient solution is an important problem. The article presents a vector field application in building hair models and expressing hairstyles, using the vector field will allow to express various hairstyles and create them...
A Java3D virtual scene includes not only 3D models but also other elements. To operate Java3D virtual scene as a whole in object-relational databases, a persistent scheme based on Hibernate was used to persist Java3D virtual scene in Oracle. According to the tree structure of Java3D virtual scene, 8 persistent classes and their bi-directional associations were created through Hibernate Object/Relational...
The dynamic model of a multi-axis synchronous gantry machining center VX32-60 is developed based on the finite element method. Both the numerical simulation and the modal experiment are studied. The nature frequencies and mode shapes are obtained by theoretical analysis and experimental results. The effects of material parameters and section parameters on the dynamic characteristics of multi-axis...
A virtual experiment system for metal creep performance testing is built by virtual reality modeling language (VRML). The structure, function and design principles of the system are described and its implementation procedure is also discussed. The key development process, including object modeling, 3D scene building, VRML connecting to the real-time database, design of interactive virtual 3D scene...
We introduce a method for simulate and render of ocean wave by vertex and fragment processing. The method is divided into four stages: wave generation, surface tessellation, optical simulation, and water surface rendering. Our implement not only is a simple wave by influence of terrain like previous work, but also a manipulative model by influence of the wind that are well suited for simulate all...
Conceptual design of mechanical transmission system is an early stage in the product design process, which has an essential effect on product innovation. This paper is devoted to presenting a systematic approach to automated conceptual design of mechanical transmission system based on motion space matrix. After the physical quantities representation, transmission functional representation, and representation...
The development of virtual scene involves too many object; however, in most cases they share some common parts. After researching the modeling method of sky and terrain, one basic framework of virtual scene's development is put forward. The framework covers both the modeling and rendering technique of sky and terrain, and any operation on camera. Detailed design is presented in relative section, by...
The three-Dimensional models of parts are the basis of virtual maintenance. In this paper, a three-Dimensional modeling system based on laser scanning is designed, and a novel calibration method is proposed. In calibration, a standard ball with known dimension is translated linearly and cut by the laser plane. The profile of the laser stripe is detected in subpixel precision. And sufficient accurate...
In this paper a new architecture to calculate Ln function based on data-oriented theory is introduced. Because of using proper and huge amount of data in modeling, implementing of this type of models causes less calculation complexity. Data-oriented architecture is made of considering memory and small calculation unit together. Proposed method calculates Ln function faster than common methods.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.