Papers by Keyword: Three Dimensional Modeling

Abstract: According to the CFD numerical simulation of hydraulic turbine internal flow and simulation calculation of vortex and cavitation of draft tube, and in the three dimensional modeling and analysis of the draft tube elbow is found that commonly modeling methods are tedious process, there is more deviations, not conducive to modify the part size and flow over a smooth. This article proposes a projective modeling method to avoid some drawbacks of traditional methods; the modeling process is convenient and concise, easy to modify the local size, flow more smoothly, and achieve more accurate simulation process.

Abstract: The construction of Hurongxi highway is the one of the most difficult highway in the world. Slopes of Hurongxi highway are studied in this paper. Comprehensive three-dimensional (3D) modeling and visual analysis technique based on rock stratum model and skirt weathering model are put forward. The comprehensive model consists of slope multi-information, such as 3D accurate terrain, excavation, engineering measures, monitoring facilities, underground water, bridges and tunnels. An information analysis system of slopes along the highway is established combining database platform. It provides an effective visualization support platform for the analysis of the geological conditions of slope during the construction, decision making of excavation and protection and deformation warning, meanwhile, it also contributes a lot to some other similar slope engineering.

Abstract: Considering the efficient use of energy and environmental pollution, people's lives tend to energy saving and environmental protection, and energy saving electric vehicles has gradually been widely used. Through combining theoretical analysis, numerical simulation, system design and experimental validation, based on studying electric vehicle body design principles, the experiment optimized electric vehicle body design, and reduced the weight of the vehicle effectively. Its performance becomes more advanced, and the application becomes more economical and safe. By using Solidworks software, lightweight electric vehicle body structure of two-dimensional design and three-dimensional modeling was built to reach practical requirements. The body structure design is original and simple, which has good practical value.

Abstract: With the fast development of computer multimedia technology, space technology, visualization technology, digital geomatics technology and computer graphics technology, using three-dimensional GIS technology to realize virtual visualization scene become reality. Three-dimensional GIS had already been applied to a lot of fields, such as country resource management, urban planning, public security system, electric power telecom branch. The paper had paid great attention to the popular three-dimensional GIS technology which had been in progress studying nowadays. It has summarized the research content and developed condition of current three-dimensional GIS and expatiates on the comprehensive application foreground of three-dimensional GIS. It had discussed and studied the three-dimensional GIS modeling method and the key visualization technology which based on OpenGL. It designed and realized a three-dimensional GIS simulation system. The paper had done the main studies as follows: (1) 3D GIS modeling theory and method had been discussed in this paper, and the paper had realized 3D modeling based on 3dsmax become reality; (2) It had designed and realized a three-dimensional GIS simulation system based on visualization technology which based on OpenGL.

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.

Abstract: To achieve 3D grid models which have a non-uniform size and varying properties, we proposed the algorithm of grid subdivision and encryption by human-computer interaction. This algorithm was the technology based on 3D geological modeling, and achieving process has following three steps. Firstly, we converted many 2D cross sections to 3D space, and reconstructed 3D vector models using the algorithm of optimal path suture, and set the property of abnormal body and surrounding rock. Then, achieving 3D grids subdivided according to the relationship between the center of 3D grid and 3D vector models, the properties of 3D grids were determined. Finally, we encrypted grids in the survey area and expansion area, and modified the properties. The results show that the algorithm can realize the conversion from 3D vector models to 3D grid models, and this process is reliable and efficient.

Abstract: A three-dimensional model of two columns covering hydraulic support was created by Pro/E software. The model was imported into ABAQUS software for finite element analysis. The stresss distribution of the hydraulic support in the conditions of the top beam partial load and the base reversed was got. The result was a reference in the design and structural optimization of the hydraulic support.

Abstract: The three-dimensional modeling of virtual city is one of the most basic and most important work in the simulation system of virtual city. This paper mainly summarizes the basic content and the key technologies of the three-dimensional modeling of virtual city, sets forth the modeling steps and methods based on MultiGenCreator and finally gives a brief summary of the application of this technology in urban planning and construction and geographic information system.

Abstract: A postal assisted bicycle frame is designed according to the demands of the market. And the three-dimensional modeling software is used to establish the three-dimensional model of the bicycle. Using the model of the bicycle and combined with the actual riding positions, the mechanical properties of the bicycle are analyzed by the software of finite element analysis under different riding situations. According to the analysis results, the size of the bicycle frame is changed to improve the mechanical properties of the bicycle. And these changes receive a very good result from the final analysis of the postal assisted bicycle.

Abstract: As a basic material element of the three-dimensional shape of the material plays an important role in the three-dimensional shape, material determines the structure of the three-dimensional shape, texture, texture, color, and other psychological performance, as well as a means of processing, technology, connection, and connection strength. Characteristics of the texture of the material itself, the volume characteristics, and it may produce structural organizational characteristics have a direct impact on the shape.