Academic literature on the topic 'Ogre 3D (Computer file)'
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Journal articles on the topic "Ogre 3D (Computer file)"
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Wang, Xin, Jing Zhang, Shun De Gao, and Di Wu. "A 3D Modeling System for Construction Work Simulation Based on Rendering and Dynamic Engines." Advanced Materials Research 97-101 (March 2010): 3455–58. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3455.
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Modeling System for Construction task Simulation (MSCS) presented in this paper is a 3D computer-aided drawing tool which is designed for construction task planners. It is based on OGRE (Object-oriented Graphics Rendering Engine) and Bullet Dynamic Engine, therefore the model created by MSCS has both geometric and dynamic properties. MSCS has already been used in Crawler Crane’s Lifting Simulation System which is developed by Dalian University of Technology in China to draw the work environment and the loads to be lifted.
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Wei, Yu Qing, Xing Gao, and Jing Hua Gao. "Virtools Based Development of Computer Experiment." Advanced Materials Research 756-759 (September 2013): 2887–91. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.2887.
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Virtools is a set of integrated 2D graphic images, 3D models, audio, video, and so a variety of file formats, interactive software itself has a wealth of interactive behavior module, 3D games can be created, virtual experiments simulation objects very strong interaction with the display and other three-dimensional product. This paper presents a virtual experiment based on 3D and Virtools technology, which is built with 3D experiments scenes, making 3D animation; with Virtools data processing, interactive control. The experiments show that this method has the authenticity, interactivity, simple and easy to implement features.
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Setiawan, Budhy, Isa Triyanti Santoso, Achmad Walid, Ryan Prasetyo, Delila Cahya Permatasari, and Virna Umro Audiana. "Aplikasi solidwork untuk rancangan CAD 3D pada mesin 3D printer 2x2x2 meter." JURNAL ELTEK 19, no. 2 (October 29, 2021): 9. http://dx.doi.org/10.33795/eltek.v19i2.283.
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ABSTRAK
Mesin 3D printing dapat membuat proses produksi menjadi singkat dan sederhana, keunggulan ini menjadikan banyak peneliti mulai menggembangkan mesin printing. Pengembangan mesin printing yang sudah dilakukan salah satunya adalah mesin 3D printer 2 x 2 x 2 meter. Keberhasilan mesin printing dapat dilihat dari hasil printing yang sesuai dengan desain yang diharapkan. Oleh karena itu, diperlukan aplikasi yang dapat membantu merancang desain objek 3D pada mesin printer 2x2x2 meter, salah satunya menggunakan aplikasi CAD (Computer Aided Design) “SolidWork”. Aplikasi “SolidWork” bersifat opensource yang dapat membantu mengetahui pengaruh desain 3 dimensi menggunakan software CAD terhadap jarak, sudut dan skala objek pada mesin printer 2x2x2 meter. Desain objek 3D “SolidWork” disimpan dalam dalam format file STL, kemudian diproses di dalam Simplify 3D, objek akan diiris secara software. Hasil irisan gambar 3D akan menghasilkan sebuah file G-Code. Output koordinat dari G-Code digunakan untuk menggerakan motor stepper. Hasil cetak objek 2D memiliki error ukuran bentuk segitiga 4,62%, bentuk straight slog 7,49%, bentuk oval 5,54%, error sudut sebesar 0% dan error skala objek 0%. Sedangkan untuk objek 3D memiliki error rata – rata sebesar 0,29%. Berdasarkan hasil pengujian aplikasi “SolidWork” dapat menujukkan kinerja mesin dan membantu dalam pembuatan desain 2D dan 3D pada mesin 3D printer 2x2x2 meter di Lab Elektro Prodi Elektronika Politeknik Negeri Malang.
ABSTRACT
3D printing machines can make the production process short and simple, this advantage has made many researchers start to develop printing machines. One of the developments in printing machines that have been carried out is the 2 x 2 x 2 meter 3D Printer machine. The success of the printing machine can be seen from the printing results by the expected design. Therefore, an application is needed that can help design 3D object designs on a 2x2x2 meter printer machine, one of which is using the CAD (Computer-Aided Design) application "SolidWork". The application "SolidWork" is open source which can help determine the effect of 3-dimensional design using CAD software on the distance, angle, and scale of objects on a 2x2x2 meter printer machine. "SolidWorks" 3D object design is saved in STL file format, then processed in Simplify 3D, the object will be sliced automatically. The sliced 3D image will produce a G-Code file. The coordinate output from the G-Code is used to drive the stepper motor. The printout of 2D objects has a triangular size error of 4.62%, a straight slog shape of 7.49%, an oval shape of 5.54%, an angle error of 0%, and a scale error of 0%. Meanwhile, 3D objects have an average error of 0.29%. Based on the results of testing the "SolidWork" application can show machine performance and assist in making 2D and 3D designs on a 2x2x2 meter 3D printer machine at the Electrical Lab of Electronics Study Program, State Polytechnic of Malang.
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Aishwarya, Y., B. Gourangi, and K. Abhijeet. "3D-BIOPRINTING (Application of 3D printer for Organ Fabrication)." International Journal of Students' Research in Technology & Management 3, no. 5 (September 27, 2015): 346. http://dx.doi.org/10.18510/ijsrtm.2015.351.
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Chronic shortage of human organs for transplantation has become more problematic in spite of major development in transplant technologies. In 2009, only 27,996 (18%) of 154,324 patients received organs and 8,863 (25 per day) died while on the waiting list. As of early 2014, approximately 120,000 people in the U.S. were awaiting an organ transplant. The solution to this problem is 3D bio-printing. This technology may provide a unique and new opportunity where we can print 3D organs. It incorporates two technologies, tissue engineering and 3D printing. 3D bioprinting involves dispensing cells onto a biocompatible scaffold using a successive layer-by-layer approach to generate tissue-like three-dimensional structures. It uses instruction in the CAD file for formation of the object, high level computer programming and ability to build highly advanced computer systems, it offers hope for bridging the gap between organ shortage and transplantation needs.
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Muhammad Nur Farhan Saniman, Muhammad Ibrahim Yahya, Nurul Nadiah Mahmud, Khairul Anuar Abd Wahid, Khairul Azhar Mohammad, Noor Faizah Che Harun, Mohd Helmy Sakir, and Moh Khairudin. "3D Printing Parameters Optimization of ABS Probe Holder for Ultrasonic Scanner." Journal of Advanced Research in Applied Sciences and Engineering Technology 48, no. 2 (July 18, 2024): 10–15. http://dx.doi.org/10.37934/araset.48.2.1015.
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In recent years, 3D printing technology has received a lot of attention. The use of 3D printing technology in many industries is widely accepted due to its low cost of production and capacity to manufacture complex and geometrical shapes. This paper presents the fabrication of probe holder by using 3D printing technology for ultrasonic scanner application. The fabrication of 3D printed probe holder began with the Taguchi technique design of experiment (DOE). Three major effects were identified: printing temperature, layer thickness and infill density. Solidworks software was employed to build the computer-aided design (CAD) model of the probe holder. Subsequently, the CAD model file is converted to Standard Tessellation Language (STL) file for 3D printing process. The probe holder was successfully fabricated using 3D printer without any defects visible on the outside surface of the 3D printed products. Based on bending test results, it can be concluded that the strength of probe holder was attributed by the layer thickness.
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Xin, Yufeng, Dongliang Zhang, and Guopeng Qiu. "Real-Time Animation Complexity of Interactive Clothing Design Based on Computer Simulation." Complexity 2021 (May 11, 2021): 1–11. http://dx.doi.org/10.1155/2021/9988623.
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With the innovation of computer, virtual clothing has also emerged. This research mainly discusses the real-time animation complex of interactive clothing design based on computer simulation. In the process of realizing virtual clothing, the sample interpolation synthesis method is used, and the human body sample library is constructed using the above two methods (primitive construction method and model reconstruction method) first, and then, the human body model is obtained by interpolation calculation according to the personalized parameters. Building a clothing model is particularly important for the effect of trying on. The clothing that needs to be displayed can be scanned and then input into the computer to build the model. The model can be directly built in 3DMAX and other software and then its surface texture can be mapped, or the clothing model can be directly built. The 3D model in the 3ds file is loaded by the loop body nested switch branch selection structure. Correspondingly, the write-back operation of 3ds files is similar. Just follow the general structure of the 3ds file and write the root block, version information block, edit information block, key frame information block, etc. to a brand new file in sequence. The main reason for this article to perform the 3ds file write-back operation is that, after the clothing model is dynamically simulated through the dynamic principle, the deformed key animation frame needs to be saved as a 3ds file so that it can be further imported into the 3DSMAX software and generated by the renderer, form high-quality picture information, and finally get high-definition animation video. In the CPU-GPU hybrid method, modules such as force calculation, collision processing, and position update use the GPU method, while overstretching is processed by the CPU method, making the overall performance 10 times higher than the pure CPU method. This research helps to promote the development of 3D virtual clothing design.
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Wang, Chung Shing, Teng Ruey Chang, Wei Hua A. Wang, and Man Ching Lin. "Rapid Prototyping STL Reconstruction for CT Medical Image in Fused Deposition Modelling." Key Engineering Materials 443 (June 2010): 522–27. http://dx.doi.org/10.4028/www.scientific.net/kem.443.522.
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The main objective of this research is to reconstruct 3D rapid prototyping (RP) models for computer tomography (CT) medical images in fused deposition modeling (FDM). It demonstrates a technique to convert medical images to points cloud, and simplify into STL (Stereo-Lithography) triangular meshes for RP machine in fused deposition modelling. The grey prediction algorithm is used to sort contour point data in each layer of the medical image. The contour difference detection operation is used to sequence the points for each layer. The 3D STL meshes are then constructed by layer-by-layer sequence meshes algorithm to build the STL file. Once this STL file is saved, a 3D physical model of the medical image can be fabricated by FDM RP manufacturing, and its virtual reality model can also be presented for visualization. CT images of a human skull and femur bone were used as the case studies for the construction of the 3D solid model with medical images. The STL models generated using this new methodology compared to commercial computer-aided design (CAD) models. The results of this research are therefore clinically reliable in reconstructing 3D STL models for CT medical images.
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Wang, Yuye, Guofeng Zhang, and Xiaoguang Hu. "Large-scale scene real-time infrared simulation based on texture blending." International Journal of Intelligent Computing and Cybernetics 9, no. 4 (November 14, 2016): 406–15. http://dx.doi.org/10.1108/ijicc-07-2016-0024.
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Purpose Infrared simulation plays an important role in small and affordable unmanned aerial vehicles. Its key and main goal is to get the infrared image of a specific target. Infrared physical model is established through a theoretical research, thus the temperature field is available. Then infrared image of a specific target can be simulated properly while taking atmosphere state and effect of infrared imaging system into account. For recent years, some research has been done in this field. Among them, the infrared simulation for large scale is still a key problem to be solved. In this passage, a method of classification based on texture blending is proposed and this method effectively solves the problem of classification of large number of images and increase the frame rate of large infrared scene rendering. The paper aims to discuss these issues. Design/methodology/approach Mosart Atmospheric Tool (MAT) is used first to calculate data of sun radiance, skyshine radiance, path radiance, temperatures of different material which is an offline process. Then, shader in OGRE does final calculation to get simulation result and keeps a high frame rate. Considering this, the authors convert data in MAT file into textures which can be easily handled by shader. In shader responding, radiance can be indexed by information of material, vertex normal, eye and sun. Adding the effect of infrared imaging system, the final radiance distribution is obtained. At last, the authors get infrared scene by converting radiance to grayscale. Findings In the fragment shader, fake infrared textures are used to look up temperature which can calculate radiance of itself and related radiance. Research limitations/implications The radiance is transferred into grayscale image while considering effect of infrared imaging system. Originality/value Simulation results show that a high frame rate can be reached while guaranteeing the fidelity.
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Altieri, Federica, Giovanna Iezzi, Valeria Luzzi, Gianni Di Giorgio, Antonella Polimeni, and Michele Cassetta. "Computer-Guided Bone Biopsy: A Technical Note with the Description of a Clinical Case." Bioengineering 8, no. 12 (December 15, 2021): 214. http://dx.doi.org/10.3390/bioengineering8120214.
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Aim: The aim of this technical note is to present a computer-aided design–computer-aided manufacturing (CAD–CAM) surgical guide to perform a computer-guided bone biopsy. Traditionally, to diagnose abnormal conditions affecting jawbone, a bone biopsy is performed with the use of a trephine bur. The positioning of the bur, during the biopsy, is based on the skill of the surgeon; therefore, an inaccurate placement of a trephine bur may occur. The use of a guide, however, can minimize this risk and achieve a better result. Materials and Methods: To determine the site and the extension of bone sampling, the stereolithography file (STL) file of cone–beam computed tomography (CBCT) images is acquired using a specific planning software and superimposed with the STL file of a dental cast; a virtual surgical guide is designed, using the same software that allows a 3D (three-dimensional) view of the guide from different perspectives and planes. The number and site of guide tubes are determined on the basis of the width and the extension of the sampling; thanks to a 3D printer, the surgical guide is manufactured. Results: The use of a customized surgical guide realized with CAD–CAM technology allows a precise and minimally invasive approach, with an accurate three-dimensional localization of the biopsy site. Conclusions: The high precision, great predictability, time-effectiveness and versatility of the present guide should encourage the clinician to use this minimally invasive surgical approach, but controlled clinical trials should be conducted to evaluate the advantages as well as any possible complications.
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Guo, An, Zhan Zhang, Feng Gao, Haichao Du, Xiaokui Liu, and Bang Li. "Applications of Convolutional Neural Networks to Extracting Oracle Bone Inscriptions from Three-Dimensional Models." Symmetry 15, no. 8 (August 12, 2023): 1575. http://dx.doi.org/10.3390/sym15081575.
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In recent years, high-fidelity three-dimensional (3D) oracle bone models (3D-OBMs) have received extensive attention from oracle bone experts due to their unparalleled reducibility to real oracle bone. In the research process of 3D-OBMs, the first procedure is to extract oracle bone inscriptions (OBIs) from the model to form individual oracle bone characters (OBCs). However, the manual extraction of OBIs is a time-consuming and labor-intensive task that relies heavily on oracle bone knowledge. To address these problems, we propose a texture-mapping-based OBI extractor (tm-OBIE), which leverages the symmetrical characteristics of the texture mapping process and is able to extract 3D-OBIs from 3D-OBMs saved as a wavefront file. The OBIs in the texture file were first located using a trained 2D object detector. After that, the 3D mesh area, where the OBIs are located, was obtained using an inverse texture mapping method. Thirdly, a specific 2D plane was fitted using the centroid of triangular faces in the flat regions of the mesh via a singular value decomposition (SVD) method. Finally, by measuring the distances between the triangle meshes and the fitted plane, the meshes of the 3D-OBIs were obtained. This paper verifies the feasibility of this method via experiments and analyzes the possibility of using the algorithm framework for extracting other ancient characters from their corresponding 3D models.
Dissertations / Theses on the topic "Ogre 3D (Computer file)"
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Leal, Anamary. "Exploring the effectiveness of 3D file browsing techniques for file searching tasks." Honors in the Major Thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1285.
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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.Bachelors
Engineering and Computer Science
Early Childhood Education
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Lundgren, Marcus. "A comparison of 3D file formats." Thesis, Linköpings universitet, Informationskodning, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72753.
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Choosing a 3D file format is a difficult task, as there exists a countless number of formats with different ways of storing the data. The format may be binary or clear text using XML, supporting a lot of features or just the ones that is currently required and there may be an official, or just an unofficial, specification available. This thesis compares four different 3D file formats by how they handle specific features; meshes, animation and materials. The file formats were chosen based on if they could be exported by the 3D computer graphics software Blender, if they supported the required features and if they appeared to have some form of complete specification. The formats were then evaluated by looking at the available specification and, if time permitted, creating a parser. The chosen formats were COLLADA, B3D, MD2 and X. The comparison was then conducted, comparing how they handled meshes, animation, materials, specification and file size. This was followed by a more general discussion about the formats.
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Onyeako, Isidore. "Resolution-aware Slicing of CAD Data for 3D Printing." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34303.
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3D printing applications have achieved increased success as an additive manufacturing (AM) process. Micro-structure of mechanical/biological materials present design challenges owing to the resolution of 3D printers and material properties/composition. Biological materials are complex in structure and composition. Efforts have been made by 3D printer manufacturers to provide materials with varying physical, mechanical and chemical properties, to handle simple to complex applications. As 3D printing is finding more medical applications, we expect future uses in areas such as hip replacement - where smoothness of the femoral head is important to reduce friction that can cause a lot of pain to a patient. The issue of print resolution plays a vital role due to staircase effect. In some practical applications where 3D printing is intended to produce replacement parts with joints with movable parts, low resolution printing results in fused joints when the joint clearance is intended to be very small. Various 3D printers are capable of print resolutions of up to 600dpi (dots per inch) as quoted in their datasheets. Although the above quoted level of detail can satisfy the micro-structure needs of a large set of biological/mechanical models under investigation, it is important to include the ability of a 3D slicing application to check that the printer can properly produce the feature with the smallest detail in a model. A way to perform this check would be the physical measurement of printed parts and comparison to expected results. Our work includes a method for using ray casting to detect features in the 3D CAD models whose sizes are below the minimum allowed by the printer resolution. The resolution validation method is tested using a few simple and complex 3D models. Our proposed method serves two purposes: (a) to assist CAD model designers in developing models whose printability is assured. This is achieved by warning or preventing the designer when they are about to perform shape operations that will lead to regions/features with sizes lower than that of the printer resolution; (b) to validate slicing outputs before generation of G-Codes to identify regions/features with sizes lower than the printer resolution.
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Wu, Ta-Yen, and 吳達彥. "A Study on 3D Printing’s Copyright and Patent issues: Focus on the Computer-Aided Design file for 3D Printing." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/w64nq5.
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碩士國立臺灣大學
科際整合法律學研究所
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The study is about the legal issues of 3D printing and its surroundings behaviors under copyright and patent law. To realize a 3D printing, the user usually must execute a Computer-Aided Design file (CAD file), which illustrate the outcome of 3D printing. Since the CAD is highly related to 3D printing, establishing, uploading and downloading CAD file, and even establishing networking website for sharing CAD shall all be analyzed under copyright and patent law. This thesis discovers that there are many CAD illustrating products which are protected by copyright or patent law, and thus, the behaviors which make use of the CAD file will cause a legal responsibility if the users are lack of the permission of the copyright or patent right owmer. Furthermore, the legal responsibility will diverge as long as the product is classified as different kind of copyright of patent. Threrefore, it is almost impossible for common users to expect the legal outcome of their behavior. Through the research, this thesis discovers that it is necessary to amend our copyright and patent law for endowing 3D printing’s CAD file a proper legal status and for judging the surrounding behaviors of CAD appropriately.
Books on the topic "Ogre 3D (Computer file)"
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Kerger, Felix. OGRE 3D 1.7 beginner's guide: Create real time 3D applications using OGRE 3D from scratch. Birmingham, U.K: Packt, 2010.
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Rule, Keith. 3D graphics file formats: A programmerʼs reference. Reading, Mass: Addison-Wesley Developers Press, 1996.
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Lussier, Kyle. Power-3D: High speed 3D graphics in Windows 95/NT. Greenwich, CT: Manning, 1997.
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Yamada, Yasusato. Rhino 3D modeling. Tokyo: San'ei Shobo Publishing Co., 2006.
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Benner, Steve. Alchemy for Doom, Doom II, Heretic, and Hexen: 3D game. 2nd ed. Indianpolis, Ind: Sams Pub., 1996.
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Leler, Wm. 3D with HOOPS: Building interactive 3D graphics into your C₊₊ applications. Reading, Mass: Addison-Wesley, 1996.
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Mantgem, Mike Van. 3D action gamer's bible: Strategies, secrets & cheats for the most popular 3D action games. Rocklin, Calif: Prima Pub., 1996.
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Morrissey, Maria. Versacad Corporation's training guide 2D and 3D tutorials. Albany, N.Y: Delmar Publishers, 1989.
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Till, Steven. Exploring 3D animation with 3DS Max 8. Clifton Park, NY: Thomson/Delmar Learning, 2007.
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Leler, Wm. 3D with Hoops: Build interactive 3D graphics into your C[plus] [plus] applications. Reading, Mass: Addison-Wesley, 1996.
Find full textBook chapters on the topic "Ogre 3D (Computer file)"
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Mahamood, Rasheedat M. "Laser Metal Deposition Process." In 3D Printing, 172–82. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1677-4.ch009.
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Laser metal deposition process belongs to the directed energy deposition class of additive manufacturing process that is capable of producing highly complex part directly from the three dimensional (3D) computer aided design file of the component by adding materials layer after layers. Laser metal deposition process is a very important additive manufacturing process and it is the only class of additive manufacturing process that can be used to repair valued component parts which were not repairable in the past. Also because this additive manufacturing process can handle multiple materials simultaneously, it is used to produce part with functionally graded material. Some of the features of the laser metal deposition process are described in this chapter. Some experimental studies on the laser metal deposition of Titanium alloy- composite are also presented.
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Bose, Susmita, Yongdeok Jo, Ujjayan Majumdar, and Amit Bandyopadhyay. "Binder Jet Additive Manufacturing of Biomaterials." In Additive Manufacturing in Biomedical Applications, 77–91. ASM International, 2022. http://dx.doi.org/10.31399/asm.hb.v23a.a0006903.
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Abstract Additive manufacturing (AM) technologies print three-dimensional (3D) parts through layer-by-layer deposition based on the digital input provided by a computer-aided design file. This article focuses on the binder jet printing process, common biomaterials used in this AM technique, and the clinical applications relevant to these systems. It reviews the challenges and future directions of binder-jetting-based 3D printing.
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Tabernero-Rico, Roberto Domingo, Sonia-Francisca Pozo-González, and Alberto Prats-Galino. "Mangement of a 3D Visualization Program From Radiological Images in Neuroradiology." In Technological Adoption and Trends in Health Sciences Teaching, Learning, and Practice, 215–44. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-8871-0.ch010.
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The latest technological advances in postprocessing of images have made possible the generation of three-dimensional (3D) models from 2D radiological images. The use of these models in PDF file allows interaction, providing useful visualization tools and management that facilitate the work and understanding of the anatomical region of the study area. All this is possible from a personal computer without the requirement of a professional workstation. In this chapter, the authors present the characteristics of 3D PDF software with anatomical models of the skull base. Therefore, through the management and development of these new educational contents, introduced as complementary didactic material for the study of anatomy in complex regions, the ability to understand is improved and learning is expedited. This is very important not only in the field of teaching but also in other applications, such as clinical practice and the scientific field, since it allows the use of these contents without the need to compromise patient safety.
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Lebamovski, Penio. "Virtual Reality in Stereometry Training." In Display Technologies [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.107422.
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A new stereoscopic system is presented in this chapter for training in stereometry. Virtual reality systems are two types: immersion and non-immersion. An example of a environments with immersion is the desktop computer in which the virtual world is displayed on a special stereoscopic monitor through 3D glasses. The HMD (Head Mounted Display) virtual helmet is an example of an immersion system. The new stereoscopic system can also implement both types of 3D technology. At the same time, the software can generate objects in the .obj file extension to print to a 3D printer or add to a virtual reality device. The 3D technology is one of the fastest-growing. Over the last decade, it has found application in almost all spheres of society, including education. In learning stereometry, a problem may arise in drawing the geometric figures, unlike planimetry, where the drawing 100% coincides with its original. The problem can be solved with the help of specialized 3D software.
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Swetha, R., and S. NirmalaDevi. "Design of Prosthetic Arm." In Advances in Parallel Computing. IOS Press, 2021. http://dx.doi.org/10.3233/apc210015.
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This paper proposes the design of the prosthetic arm by reconstructing the structure and proportions of an amputated arm using high precision methods and dimensions. To achieve this, CT images of the patient’s amputated and non-amputated arm are collected from the Rehabilitation centre. The patient CT data were imported to a 3D modelling software i.e., Mimics Innovation Suite version 22.0 Materialise 3-Matic version 14.0 original licensed software. The exported file is given to the Computer-Aided Design software, the geometry of the socket and the prosthetic arm were designed according to the mirrored geometry of the non-affected arm. 3D rendering for various degrees of movement has been carried out for animation.
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Oliveira, João Fradinho, José Luis Moyano-Cuevas, J. Blas Pagador, Hugo Capote, and Francisco Miguel Sánchez Margallo. "Preoperative and Intraoperative Spatial Reasoning Support with 3D Organ and Vascular Models." In Medical Imaging, 1911–34. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0571-6.ch078.
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Different imaging modalities (MRI/CT) are used to analyse/plan complex surgical procedures in order to minimize risks and complications. Although there are numerous computer tools for preoperative assistance (VR/AR simulators, 3D printed implants), intraoperative systems are less common, specifically for soft tissue related interventions. For this reason, this paper is focused on 3D reconstruction. The proposed reconstruction combines a surface approach for organs and a block approach for vascular networks. Layered closed surface(s) represent an organ and stacks of extruded individual contour blocks represent the vascular networks. The authors use IGSTK to show that their approach improves shape and transparency results when compared with other modelling methods and to communicate with trackers. With their method polygon contour correspondence/branching between slices is implicit/automatic, saving time; they show that traditional tiling problems become visually negligible. The authors' novel file format allows polygons segmented by other tools to be reconstructed in their contour annotation tool which uses VTK.
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Mahamood, Rasheedat M. "Laser Metal Deposition Process." In Advances in Civil and Industrial Engineering, 46–59. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-5225-0329-3.ch003.
Full textAbstract:
Laser metal deposition process belongs to the directed energy deposition class of additive manufacturing process that is capable of producing highly complex part directly from the three dimensional (3D) computer aided design file of the component by adding materials layer after layers. Laser metal deposition process is a very important additive manufacturing process and it is the only class of additive manufacturing process that can be used to repair valued component parts which were not repairable in the past. Also because this additive manufacturing process can handle multiple materials simultaneously, it is used to produce part with functionally graded material. Some of the features of the laser metal deposition process are described in this chapter. Some experimental studies on the laser metal deposition of Titanium alloy- composite are also presented.
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Cruz, Christophe. "Use of Semantics to Manage 3D Scenes in Web Platforms." In Encyclopedia of Multimedia Technology and Networking, Second Edition, 1487–92. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-014-1.ch200.
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Computer graphics have widely spread out into various computer applications. After the early wire-frame computer generated images of the 1960s, spatial representation of objects improved in the 1970s with Boundary Representation (B-Rep) modeling, Constructive Solid Geometry (CSG) objects, and free-form surfaces. Realistic rendering in the 1990s, taking into account sophisticated dynamic interactions (between objects or between objects and human actors, physical interactions with light, and so on) now make 3Dscenes much better than simple 3D representations of the real world. Indeed, they are a way to conceive products (industrial products, art products, and so on) and to modify them over time, either interactively or by simulation of physical phenomena (Faux & Pratt, 1979; Foley, Van Dam, Feiner, & Hughes, 1990; Kim, Huang, & Kim, 2002). Large amounts of data can be generated from such variety of 3D-models. Because there is a wide range of models corresponding to various areas of applications (metallurgy, chemistry, seismology, architecture, arts and media, and so on) (DIS 3D Databases, 2004; Pittarello & De Faveri, 2006; SketchUp from Google, 2006), data representations vary greatly. Archiving these large amounts of information most often remains a simple storage of representations of 3D-scenes (3D images). To our knowledge, there is no efficient way to manipulate, or archive, extract, and modify scenes together with their components. These components may include geometric objects or primitives that compose scenes (3D-geometry and material aspects), geometrics transformations to compose primitives objects, or observation conditions (cameras, lights, and so on). Difficulties arise less in creating 3D-scenes, rather than in the interactive reuse of these scenes, particularly by database queries, such as via Internet. Managing 3Dscenes (e.g., querying a database of architectural scenes by the content, modifying given parameters on a large scale, or performing statistics) remains difficult. This implies that DBMS should use the data structures of the 3D-scene models. Unfortunately, such data structures are often of different or exclusive standards. Indeed, many “standards” exist in computer graphics. They are often denoted by extensions of data files. Let us mention, as examples, 3dmf (Apple’s Quickdraw 3D), 3ds (Autodesk’s 3DStudio), dxf (AutoDesk’s AutoCAD), flt (Multigen’s ModelGen), iv ( Silicon Graphics’ Inventor ), obj ( Wavefront/Alias ), and so on. Many standardization attempts strive to reduce this multiplicity of various formats. In particular, there is Standard for the Exchange of Product model data (STEP) (Fowler, 1995), an international standard for computer representation and exchange of products data. Its goal is to describe data bound to a product as long as it evolves, independently of any particular computer system. It allows file exchanges, but also provides a basis for implementing and sharing product databases. Merging 3D information and textual information allows the definition of the project’s mock-up. As a matter of fact, 3D information describes CAD objects of the project and textual added information gives semantic information on geometries. The main issues are the sharing and the exchange of the digital mock-up. The next section explains how we use a digital mock-up to create an information system with the help of the semantic included in geometric information. Information is exchanged and shared through a Web Platform.
Conference papers on the topic "Ogre 3D (Computer file)"
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Mesina, George L., David L. Aumiller, and Francis X. Buschman. "Automated, Highly Accurate Verification of RELAP5-3D." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-31153.
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Computer programs that analyze light water reactor safety solve complex systems of governing, closure and special process equations to model the underlying physics. In addition, these programs incorporate many other features and are quite large. RELAP5-3D[1] has over 300,000 lines of coding for physics, input, output, data management, user-interaction, and post-processing. For software quality assurance, the code must be verified and validated before being released to users. Verification ensures that a program is built right by checking that it meets its design specifications. Recently, there has been an increased importance on the development of automated verification processes that compare coding against its documented algorithms and equations and compares its calculations against analytical solutions and the method of manufactured solutions[2]. For the first time, the ability exists to ensure that the data transfer operations associated with timestep advancement/repeating and writing/reading a solution to a file have no unintended consequences. To ensure that the code performs as intended over its extensive list of applications, an automated and highly accurate verification method has been modified and applied to RELAP5-3D. Furthermore, mathematical analysis of the adequacy of the checks used in the comparisons is provided.
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Vlasenko, Artyom Nikolayevich, Svetlana Sergeevna Alexandrova, Farid Gaynutdinovich Sadreyev, and Pavel Aleksandrovich Voronin. "Automating the creation of engineering training WebGL applications." In 31th International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2021. http://dx.doi.org/10.20948/graphicon-2021-1-47-53.
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The article discusses an add-on (addon) for Blender 3D 2.9x, written in Python 3.9.2, using the Pandas, Jinja2, math and other libraries, which allows you to automate operations for creating animation of bolts, washers, nuts. Allows you to insert additional tools from external files (screwdrivers, keys, arrows, etc.) that are involved in the animation process. Apply materials from an external library, which is a * .blend file with a set of materials based on the names of objects in the scene. Export the resulting scene to WebGL 2.0, using the Babylon.js framework, with the ability to play the resulting animation, which includes traditional animation control buttons, setting the playback speed, the ability to move through animation frames, as well as access to the view from the Blender 3D camera, there where its animation takes place. An interactive list of scene objects is created in the html page, which was automatically generated from the names of Blender 3D scene objects using Jinja2, when you click on the checkbox of the list items, the object is hidden / displayed. Mechanical gear assemblies imported from T-FLEX CAD 3D 17 in * .stl format were used as examples of evaluating the addon's performance. Some features of creating add-ons for Blender 3D are discussed. A comparison of the Three.js library and the Babylon.js framework is given in order to use them to create interactive engineering applications. The add-on for Blender 3D considered in the work can be used not only in the development of educational engineering applications, but also as an element of preparation when creating, for example, IETM.
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Starodubtsev, Iliya Sergeevich, Pavel Alexandrovich Vasev, Yuliya Vladimirovna Starodubtseva, and Igor Anatolievich Tsepelev. "Modeling and Visualization of Lava Flows." In 32nd International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2022. http://dx.doi.org/10.20948/graphicon-2022-256-263.
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The study of the behavior of lava flows plays an important role in predicting, preventing and reducing the consequences of volcanic eruptions. Lava has been used as a building material for centuries and has been a source of nutrients for agriculture, but lava flows remain a threat to human activities. The model of spreading of a viscous inhomogeneous incompressible fluid under the action of grav- itational forces is used to describe the lava flow process. The mathematical model is described by the Navier-Stokes equation and the continuity equation with the corresponding initial and boundary conditions. The model takes into account the variable viscosity of the lava, which depends on the volume fraction of crystals. As a spreading surface, we use the generated topography, which is a realistic slope of a mountainous area, formed taking into account natural geological processes. Numerical simulation is carried out using the meshless SPH method. The results of several model cases of lava flows over the surface are presented. Simulation results are visualized using our custom-developed Cinema Science 3D approach. It allows a custom 3D visualization to be programmed using simple CSV file. We used it for presenting our results in a natural view, showing underlying terrain as mesh and lava as points, moving and changing according to time and other computation parameters. This view was enough for achieving visualization aims of our research.
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Troendle, Evan, Peter Barabas, and Tim Curtis. "Geometrically reconstructing confocal microscopy images for modelling the retinal microvasculature as a 3D cylindrical network." In 24th Irish Machine Vision and Image Processing Conference. Irish Pattern Recognition and Classification Society, 2022. http://dx.doi.org/10.56541/ktxe9847.
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Microvascular networks can be modelled as a network of connected cylinders. Presently, however, there are limited approaches with which to recover these networks from biomedical images. We have therefore developed and implemented computer algorithms to geometrically reconstruct three-dimensional (3D) retinal microvascular networks from micrometre-scale imagery, resulting in a concise representation of two endpoints and radius for each cylinder detected within a delimited text file. This format is suitable for a variety of purposes, including efficient simulations of molecular delivery. Here, we detail a semi-automated pipeline consisting of the detection of retinal microvascular volumes within 3D imaging datasets, the enhancement and analysis of these volumes for reconstruction, and the geometric construction algorithm itself, which converts voxel data into representative 3D cylindrical objects.
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Kurushin, E. A. "Using qr Codes to Transfer Geometric Models." In 33rd International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2023. http://dx.doi.org/10.20948/graphicon-2023-933-937.
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Quick Response code encodes text information that can be specified in different formats, such as a link, contact information, payment details, etc. Such codes are widely used in the modern world, and the means of recognizing them is often a common smartphone. Such codes are widely used in the modern world, and the means of recognizing them is most often an ordinary smartphone. 3D models in turn require specialized software to read and interact with them. As a result of this work, the geometric model is transferred to the information system by means of qr-code, which is a link to this resource. The text description of the geometrical model in the obj file format is converted to the x-www-form-urlencoded format and is passed by GET-parameter. When loading the page by QR code in client scenarios data processing and subsequent visualization with the help of WebGL technology with the use of three.js library takes place. Applying this approach allows to transfer a geometric model for its visualization and interaction with it without specialized software, requiring only a browser pre-installed in every OS.
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Ding, Houzhu, Filippos Tourlomousis, Azizbek Babakhanov, and Robert C. Chang. "Design of a Personalized Skin Grafting Methodology Using an Additive Biomanufacturing System Guided by 3D Photogrammetry." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51990.
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In this paper, the authors propose a novel method whereby a prescribed simulated skin graft is 3D printed, followed by the realization of a 3D model representation using an open-source software AutoDesk 123D Catch to reconstruct the entire simulated skin area. The methodology is photogrammetry, which measures the 3D model of a real-word object. Specifically, the principal algorithm of the photogrammetry is structure from motion (SfM) which provides a technique to reconstruct a 3D scene from a set of images collected using a digital camera. This is an efficient approach to reconstruct the burn depth compared to other non-intrusive 3D optical imaging modalities (laser scanning, optical coherence tomography). Initially, an artificial human hand with representative dimensions is designed using a CAD design program. Grooves with a step-like depth pattern are then incorporated into the design in order to simulate a skin burn wound depth map. Then, the *.stl format file of the virtually wounded artificial hand is extruded as a thermoplastic material, acrylonitrile butadiene styrene (ABS), using a commercial 3D printer. Next, images of the grooves representing different extents of burned injury are acquired by a digital camera from different directions with respect to the artificial hand. The images stored in a computer are then imported into AutoDesk 123D Catch to process the images, thereby yielding the 3D surface model of the simulated hand with a burn wound depth map. The output of the image processing is a 3D model file that represents the groove on the plastic object and thus the burned tissue area. One dimensional sliced sections of the designed model and reconstructed model are compared to evaluate the accuracy of the reconstruction methodology. Finally, the 3D CAD model is designed with a prescribed internal tissue scaffold structure and sent to the dedicated software of the 3D printing system to print the design of the virtual skin graft with biocompatible material poly-ε-caprolactone (PCL).
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Oliveira, Adriana Anselmo, Leonel Ribeiro, and Nelson Ferreira. "THE USE OF 3D SCANNING AND PRINTING IN THE RESTORATION PROCESS OF THE EXPOSED CERAMIC PANELS OF JORGE BARRADAS (PALÁCIO DA JUSTIÇA DE LISBOA)." In RECH6 - 6th International Meeting on Retouching of Cultural Heritage. València: Editorial Universitat Politècnica de València, 2021. http://dx.doi.org/10.4995/rech6.2021.13611.
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The techniques applied to restore and conserve the 16 ceramic panels which are an integral part the façade of the Palácio da Justiça’s South Building, in Lisbon (authored by Jorge Barradas, Querubim Lapa and Júlio Resende), was marked by the adoption of disruptive technology as one of the main methods of approaching the pieces in need of intervention. Different materials and techniques, both digital and manual, either from physical or aesthetic perspectives, guaranteed their future preservation. Following principles of restoration ethics, photographic references of the compositions served as a goal to assimilate the original work as much as possible. Recurring missing parts were then to be reconstructed by means of 3D scanning and current object printing technology. Such technique allows a preview and manipulation through specific computer software. Once the file has been completed with all the information necessary to produce the object, it can be sent directly to a 3D printer. The main objective of intervening Jorge Barradas' panels with 3D printed objects, was to replace large key pieces in a non-intrusive way and without damaging the original work. Simultaneously, in addition to the durability of such printed materials, a "life insurance" is created in case of any damage or theft, since it can be replicated quickly from the thorough scan, stored in a digital file format.
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Trinkel, T., R. Anderl, M. Zocholl, and H. Eichhorn. "Long-Term Archiving of Exact 3D-CAD Geometry With JT." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53211.
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The technology of Computer Aided Design (CAD) has been in use for 3D design for more than 30 years. Still today, the result of the 3D design process is usually a 2D engineering drawing. Thus, many downstream processes in the industry are dependent on engineering drawings. Nowadays, many companies are replacing their engineering drawings with 3D-CAD models and transforming their drawing-based processes into model-based processes. Consequently, these 3D-CAD models have to be archived and new methods to do so have to be implemented. The standardization of the Jupiter Tessellation (JT) file format specification as ISO 14306 could be an opportunity to use a single data format for both purposes: downstream processes and long-term archiving of exact 3D-CAD geometries. This paper describes an approach for long-term archiving of exact 3D-CAD geometries. Initially the state of the art in long-term archiving methodology and archiving systems is analyzed. In order to enable an investigation from a technological point of view, the ISO JT data format is examined subsequently. The formal and technological requirements for a JT-based approach are then derived from these analyses. The next step is to introduce a conceptual process for long-term archiving of exact 3D-CAD geometries with the JT data. As a proof of concept, this approach is implemented prototypically. Through a comparison of the representation of exact 3D-CAD geometries in the JT and STEP data formats, the conditions for responsible long-term archiving using JT are defined. As a conclusion, this paper provides an overview of the advantages and the associated risks of long-term archiving with the ISO JT data format for exact 3D-CAD geometries.
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Li, Yaojun, and Fujun Wang. "Computer-Aided Design and Numerical Flow Analysis of Axial-Flow Pump With Inducer." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95369.
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Axial-flow pump equipped with inducer are widely used in marine propulsion systems. The interaction of inducer and impeller has significant effect on the performance of pump. In this study, a special axial-flow pump is designed and analysed by CAD-CFD approaches to study the interaction of inducer and impeller. The pump includes two main elements, an inducer with 3 blades mounted on a conical hub and a 6-blade impeller. The blade angle of impeller is adjustable to generate different relative circumferential angles between the inducer blade trailing edge and the impeller blade leading edge. The 3D pump solid model is generated by taking the data file as interface between hydraulic-design and 3D modelling. A computational fluid dynamics code is used to investigate the flow characteristics and performance of the axial-flow pump. Numerical simulation is performed by adopting 3D RANS equations with RNG k-epsilon turbulence model. An unstructured grid system and the finite-volume method are used for the solution procedure of the discretized governing equations for this problem. The rotator-stator interaction is treated with a multiple reference frame (MRF) strategy. Computations are performed in different cases: 7 different relative circumferential angles (Δθ) between the inducer blade trailing edge and the impeller blade leading edge, 3 different axial gaps (G) between the inducer and the impeller. Variation of the hydraulic loss in the rotator is obtained with the change of delta theta. The numerical results show that the pressure generated is minimum in case of (G = 3%D). This indicates that the interference between inducer and impeller is strong if the axial gap is small. The pump performances are predicted and compared to the experimental measurements. The current investigation leads to a thorough enough understanding of the flow characteristics in axial-flow pumps with complex configurations. Recommendations for future modifications and improvements to the pump design are also given.
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Ouillette, Joanne J. "Designing the Future DDG 51 Class Computer Aided Design." In ASME 1993 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/edm1993-0105.
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Abstract The DDG 51 Class of AEGIS guided missile destroyers is the Navy’s premier surface combatant. Named for famed World War II hero. Admiral Arleigh Burke, these ships represent state-of-the-art technology. This 504 foot, 8,300 ton destroyer has been designed with improved seakeeping and survivability characteristics and carries the sophisticated AEGIS Weapon System. Derived from the Greek word meaning “shield”, AEGIS ships are the “shield of the fleet”. The Navy has commissioned the first two ships of the class. They have performed beyond expectation in rigorous at-sea trials designed to fully test combat capability. The DDG 51 Class ships are replacing retiring fleet assets. In a decreasing Department of Defense (DoD) budget environment, however, acquisition costs must be reduced to continue to build capable warships. The Navy’s Destroyer Program Office is pursuing the implementation of Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM) technology to reduce costs without reducing ship’s capability. Under Navy direction, the ship construction yards, Bath Iron Works and Ingalls Shipbuilding, are aggressively pursuing the transition to CAD-based design, construction, and life cycle support This effort also involves General Electric, the Combat System Engineering Agent. Building a three dimensional (3D) computer model of the ship prior to construction will facilitate the identification and resolution of interferences and interface problems that would otherwise go undetected until actual ship construction. This 3D database contains geometry and design data to support system design. Accurate construction drawings, fabrication sketches, and Numerical Control (NC) data can be extracted directly from the database to support construction at each shipyard. At completion of construction, a model representing the “as built” configuration will be provided as a lifetime support tool for each ship’s projected 40 year life. The transition to CAD-based design and construction has applied fundamental concepts of the DoD’s Computer Aided Acquisition and Logistic Support (CALS) initiative. In addition to creating a 3D database representing ship design, the shipyards have developed a neutral file translator to exchange this data between Computervision and Calma CAD systems in operation at Bath Iron Works and Ingalls Shipbuilding respectively. This object oriented transfer capability ensures data is shared rather than duplicated. The CALS concepts of concurrent engineering and computer aided engineering analysis are being applied to design an upgrade to the ship that features the addition of a helicopter hanger. The CAD models are used as an electronic baseline from which to assess proposed modifications. Optimizing the design before the first piece of steel is cut will reduce construction costs and improve the quality of the ship.