Applied Mechanics and Materials Vols. 336-338

Abstract: In this paper, a new volumetric deformable model that is suitable for real-time haptic rendering is proposed. Haptic rendering is the process of calculating and generating repulsive force in response to user interactions with virtual objects. In order to embody a deformable object into virtual space, a volumetric deformable object represented by a shape-retaining chain linked (S-chain) model is adopted. S-chain model allows for fast and realistic deformation of elastic objects. The classical S-chain model was satisfactory but there was still room for improvement. In order to improve this limitation, we propose an advanced S-chain algorithm which can be compatible with classical S-chain model.

Abstract: Parametric models are made of a set of mathematical equations. Using a computer can design objects modeling their components with real behavior and attributes. In order parametric models have any validity, must be based on proven or using actual project data. Since there can be many variables of each type, the variables are generally represented by vectors. Typically, a specialist in mechanical design and building design, parametric modeler are aware of the properties of components and interactions between them.

Abstract: A virtual mine system involves masses of laneways and machinery with great number of model data, which restricts rendering speed seriously. In this paper, a rendering algorithm specially developed for virtual underground scenes is proposed. This algorithm considered each laneway as a visible area and applies the cuboid bounding boxes of laneways for the cameras inside-outside testing to determine the cameras position, consequently determined the visible regions and exclude invisible laneways as rendering. To decrease the calculations of inside-outside testing, octree was employed to reduce the detection scope. The experiment results indicated this algorithm was capable of substantially reducing rendering objects and had the obviously faster rendering speed than the conventional rendering acceleration algorithms.

Abstract: This paper is mainly based on the basic principle of the extended finite element ,in the large commercial software abaqus on the platform of dynamic load eccentric mixed-mode of concrete failure process are numerically simulated, the results showed that the crack together under tension and shear ,crack extension direction and the direction of cracks was obvious deflection, and is in good agreement with the physical experiments, also shows that the extended finite element fracture problems have very good advantage.

Abstract: In recent years, information technology and network technology of China have much developed, promoting the growth of social economic benefits. Under such circumstances, the matter of how to reduce the cost and bring more benefit remains to be important. 3D printing technology is playing a more and more important role in style design, the construction industry and the art industry. The author has made a deep analysis on 3D printing technology based on her own observation and practice and has made a brief discussion as to how to fully apply 3D printing technology and how to promote computer-aided style design.

Abstract: According to the recent rise in oil prices, interest in FCC Unit (Fluid Catalytic Cracking Unit) energy recycling is increasing. Such FCC Unit is a facility which refining low-valued bunker C oil into high-valued gasoline. Pressure vessel that refines crude in FCC Unit needs various interpretation because it operates under high-temp and pressure. Our concern about this FCC Unit is increasing. Experiments about its safety is not enough. In this paper, whether FCC Unit has structural stability or not, we found out FEM(Finite Element Method) analysis after trying 3D modeling by using FCC Units condition of design and critical stress as a translating data. First, we researched the safety of structure applying external factors using the natural frequency. The structure is safe from modal analysis result, the first natural frequency is 13.614Hz , beyond the of the frequency range of the wind (0.001~8Hz) and earthquake (0.1~10Hz).

Abstract: CAN bus communication has been used in a serial protocol for connecting electronic control modules together with its hardware and software design in automotive gauge application. The motivation is to develop a PC-based monitoring system for not only CAN frames received from or sent onto CAN bus, but also data recorded on log files consideration. This paper presents a prototype monitoring system on automotive CAN bus gauge for communication protocol in Ford Mustang. For the proposed CAN bus monitoring system, the designed architecture is discussed and verified into PC for surveillance performance. Furthermore the Ethernet technology adopted in the system makes it a more practical and convenient CAN bus testing system.

Abstract: With the rapid development of information technology and new media technology, the introduction of the experience economy, using the new media interactive tools into industry of real estate has become a very powerful method to increase the value of estate product. The article has used virtual reality technology to design the interactive experienced platform for showroom, realized the whole architecture of the platform, and designed interactive experience of living room, bedroom, kitchen and bathroom in real time. In the platform, users can experience the one-bedroom showroom interactively and as really as possible. Finally, the article has introduced the processes and methods of building 3D model and virtual space model.

Abstract: In order to stimulate growth model of poplar and achieve the visualization of poplar growth, the growth model is investigated from the perspective of computer simulation technology. The paper first presents physiological changes of poplar, discusses the changing rules of the space-time state of poplar growth, proposes the growth model of poplar based on state machine and predicts the growth of poplar authentically. Based on this model, the visualization algorithm of poplar growth is constructed; the data of poplar growth is properly organized; a simulation prototype system is developed to verify the validity of the model. Practice has shown that this growth model can simulate growth process of poplar and has high correctness and efficiency in the application of poplar visualization.

Abstract: Based on the 3D mine software platform and aimed at optimizing the ore blending process,according to the different lithological features of Molybdenum and Tungsten in Sandaozhuang open pit,the data integration of storage,update and management in different maps,images,tables,lithology was realized.Using the lithologic database and human-computer interaction technology,the complex lithology profile of exploration line has been drawn,and based on the technology of triangulation,the lithology model of skarn, hornfels, quartzite has been established. The construction shows that this model can provide theoretical basis and data foundation for ore blending method of lithology.