Relevant bibliographies by topics / Geometrical drawing

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Geometrical drawing'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Geometrical drawing"

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Браилов and A. Brailov. "The Analysis of Measurement Systems for the Construction of Geometrical Models of the Product." Geometry & Graphics 4, no. 1 (March 17, 2016): 34–43. http://dx.doi.org/10.12737/18056.

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In the present work, on the basis of the analysis of existing systems of measurement for geometrical modeling, their components are defined. The system of measurement for geometrical modeling consists of three mutually perpendicular planes H-П1, F-П2, P-П3 and connected with them right three-dimensional system of coordinates OXYZ. The major features of such system related to ways of formation of the two-dimensional complex drawing of a geometrical image on the basis of laws of projective connections are revealed. As the first feature of systems of measurement for geometrical modeling it is possible to allocate a way of orientation (binding) of the right three-dimensional system of co-ordinates OXYZ concerning the set planes of projections H-П1, F-П2, P-П3. The second feature of systems of measurement for geometrical modeling is the way of conditional division of space on a part (semi spaces, quadrants, and octants). The third feature of systems of measurement for geometrical modeling is the way of numbering of the allocated parts of space (semi spaces, quadrants, and octants). Interrelations of elements of different systems of measurement with different projections of a geometrical image are defined. The relative location of projections of a geometrical image into the constructed two-dimensional complex drawings for various systems of measurement is determined. For the American system of measurement in the two-dimensional complex drawing of a geometrical image the horizontal projection is located above a frontal projection, and the profile projection is located to the right of a frontal projection. For the European system of measurement in the two-dimensional complex drawing of a geometrical image the horizontal projection is located below a frontal projection, and the profile projection is located to the right of a frontal projection. The logic behind a particular arrangement of views in the projective drawing of a product in the analyzed systems of measurement is explained. For the realized way of construction of the complex drawing in the American system of measurement the horizontal projection is the bottom view, and the profile projection is the left-side view. For the realized way of construction of the complex drawing in the European system of measurement the horizontal projection is the top view, and the profile projection is the left-side view.
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Li, Mei, and Yan Dong. "The Geometrical Characteristic Description Method of Part Drawing." Advanced Materials Research 415-417 (December 2011): 711–14. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.711.

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Aim at the demand of feature modeling and recognition of engineering drawing, this paper put forward a mechanical file as real time defining and editing tool of feature, converting the restriction of parametric drawing to the same point relation, structure restriction and dimension restriction, marking the drawing structure of the file using of the extending data entity. So that the file can support the feature modeling and recognition, realize the structure management of engineering drawing.
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Hajiahmadi, Saeed, Majid Elyasi, and Mohsen Shakeri. "Evaluation of drawing force by a new dimensionless method in deep drawing process." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 234, no. 13 (June 16, 2020): 1604–14. http://dx.doi.org/10.1177/0954405420929770.

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In this research, geometric parameters were given in dimensionless form by the Π- Buckingham dimensional analysis method in the dimensionless group for deep drawing of a round cup. To find the best group of dimensionless parameters and the fittest dimensionless relational model, three scales of the cup are evaluated numerically by a commercial finite element software and stepwise regression modeling. After analyzing all effective geometric parameters, a fittest relational model among dimensionless parameters is found. In addition, the results of the new dimensionless model were compared with the simulation process and experimental tests. From the results, it is inferred that the geometric qualities of a large scale can be predicted with a small scale by the proposed dimensionless model. Comparing the results of the dimensionless model with experimental tests shows that the proposed dimensionless model has fine precision in the determination of geometrical parameters and drawing force estimation. Moreover, to evaluate the accuracy of the proposed dimensionless model, the predicted value of the model has been compared by the experimental results. It is shown that the dimensionless ratios of geometrical parameters can significantly affect the estimation of the drawing force by the proposed dimensionless model, but based on similarity law, because of the constant value of these dimensionless parameters in different scales, they could not be used for dimensionless analysis separately. It is also inferred that because of the effect of contact area on the coefficient of friction, which is changed by scale changing, the only dimensionless parameter that can significantly change the drawing force is the coefficient of friction. Finally, it is shown that the dimensionless geometrical parameter and the coefficient friction should be combined for dimensionless analysis.
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Dong, Yan, and Mei Li. "The Geometrical Feature Recognition Method of Part Drawing." Advanced Materials Research 415-417 (December 2011): 523–26. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.523.

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This paper put forward a geometry feature recognition method of part drawing based on graph matching. Describe the constraints structure of geometric feature in geometric elements and those constraint relationships. Match sub-graph in contour closure graphics and those combination. Using linear symbol notation of chemical compounds in chemical database for reference, encode to constraint structure of geometry graphics, establish recognition mechanism of geometric characteristics by structure codes. Taking the fine-tune screw and fork parts for example, this method has been proved to be effective.
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Mastipanova, A. V. "ABOUT SOME PROBLEMS GEOMETRY OF FOOT DRAWING." Educational Dimension 13 (May 26, 2022): 153–58. http://dx.doi.org/10.31812/educdim.5758.

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The tasks of construction of geometrical elements by the division of corners are examined in the article. A method passed the tests on employment on drawing on the fine-art faculty of the Kryvoy Rog state pedagogical university.
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Харах, Matvey Kharakh, Козлова, Irina Kozlova, Славин, Boris Slavin, Славин, R. Slavin, Гусева, and T. Guseva. "Parameterization Theory Elements and Parametric Drawings in "KOMPAS-Graphic"." Geometry & Graphics 5, no. 1 (April 17, 2017): 64–72. http://dx.doi.org/10.12737/25125.

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Some elements of geometric objects’ parameterization theory are considered in this paper. An analysis of this theory development by leading Soviet scientists has been presented. It is known that figure’s parameters are determined by adding shape parameters with location parameters. In the drawing these parameters are expressed as dimensions. Relations between figures are determined or by their mutual affiliation, or by perpendicularity, or by their touch. These ratios allow reduce dimensions number on a drawing. The link of the parameterization theory with creation of parametric drawings has been demonstrated in the considering work. Definitions for such concepts as parameter and parametric drawing have been given. A various geometric figures’ parameters calculation principle has been considered. The order of assignment in parametric form of different geometrical objects (point, straight line), as well as any figure’s position in space has been presented. Assignments of geometrical conditions for membership, parallelism, perpendicularity, contact by parameters have been considered. A detailed description for parametric drawing in "KOMPAS-Graphic" program has been presented. Advantages and features related to carrying out of parametric fragments (with geometric and dimensional dependencies) and drawings in this program for various industries have been laid in detail. Some features and approaches in carrying out parametric drawings and fragments, which worthwhile to apply for different modifications of items when needed to creat group drawings, have been proposed for consideration. Traditional methods for creation of the group drawings using CAD systems effectively increase intellectual work’s performance. The CAD systems capabilities use will enable designers to implement various ways and possibilities comprehensively for creation and presentation of graphic information.
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Toteva, Pavlina, and Krasimira Koleva. "Application of New Generation Geometrical Product Specifications in the practice in Small and Medium Sized enterprises." MATEC Web of Conferences 299 (2019): 04006. http://dx.doi.org/10.1051/matecconf/201929904006.

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The increasing development of modern methods of product manufacturing implies an improvement and a new approach to the modern drawing specification in design documentation for design requirements of different parts and assemblies. The ISO Technical Committee 213 has published 148 standards and 48 otherstandards are under development. These standards set out requirements for the accuracy of geometrical characteristics of products. They define requirements for the linear sizes, dimensions different than linear sizes as well as geometric deviations such as form, orientation, location deviations and run-out, and surface roughness and waviness. Ways of indication of these requirements in the drawings are discussed. Many standards are dedicated to the requirements for measuring these characteristics, to measuring instruments for linear sizes and geometrical characteristics. This report reviews the general concept of geometrical product specifications (GPSs), the GPS model, and new terminology by tolerancing linear sizes, geometrical specifications that facilitate communication between design manufacturing and verification and prevent ambiguous interpretation of requirements. Based on the metrological expertise of the drawings in a number of small and mediumsized enterprises, the degree of implementation of the new generation GPS standards and the problems related to it have been analysed.
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Nowacki, J., J. Fujiwara, P. Mitschang, and M. Neitzel. "Deep Drawing of Fabric Reinforced Thermoplastics: Maximum Drawing Depth and Mechanism of Wrinkle Formation." Engineering Plastics 6, no. 4 (January 1998): 147823919800600. http://dx.doi.org/10.1177/147823919800600402.

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Sheet forming technologies have recently evolved for continuous fibre reinforced thermoplastic materials. Stamp forming is gaining in importance. Because of very low cycle times this method is very suitable for the production of simple parts. Although the advantages of stamp forming are obvious, the main characteristics have not been investigated sufficiently yet. In this report a deep drawing tool is described, which enables a standardized investigation of the maximum drawing depth of any chosen material. The deep drawing of fabric reinforced thermoplastic sheets has been examined using various geometrical moulds, punch radii and drawing depths. The results of these investigations, and of others concerned with wrinkle formation, are presented in this paper.
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Nowacki, J., J. Fujiwara, P. Mitschang, and M. Neitzel. "Deep Drawing of Fabric Reinforced Thermoplastics: Maximum Drawing Depth and Mechanism of Wrinkle Formation." Polymers and Polymer Composites 6, no. 4 (May 1998): 215–22. http://dx.doi.org/10.1177/096739119800600402.

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Sheet forming technologies have recently evolved for continuous fibre reinforced thermoplastic materials. Stamp forming is gaining in importance. Because of very low cycle times this method is very suitable for the production of simple parts. Although the advantages of stamp forming are obvious, the main characteristics have not been investigated sufficiently yet. In this report a deep drawing tool is described, which enables a standardized investigation of the maximum drawing depth of any chosen material. The deep drawing of fabric reinforced thermoplastic sheets has been examined using various geometrical moulds, punch radii and drawing depths. The results of these investigations, and of others concerned with wrinkle formation, are presented in this paper.
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Suharyoso, Kasim. "PENINGKATAN KEMAMPUAN MENGGAMBAR RAGAM HIAS GEOMETRIS DENGAN KERTAS LIPSI." Jurnal Dimensi DKV Seni Rupa dan Desain 6, no. 1 (October 12, 2021): 105–21. http://dx.doi.org/10.25105/jdd.v6i1.9136.

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AbstractThe Increasing of Geometrical Ornaments Drawing Ability with LIPSI Paper Media. The result of the geometrical ornaments drawing in SMPN 2 Gending tend to not indicated the ornamental characteristic. The students had some difficulties to organizing the visual elements into motives, and to developing pattern or repetition into the geometrical ornaments. Therefore, the media to help students to draw is needed. This research aims to describe the application and the increasing of the of geometrical ornaments drawing ability by using LIPSI paper media. This research is a quantitative research, with the Classroom Action Research (CAR) the Hopkins model by two cycles method. In each cycle the research conducted the action of planning, acting, observing, and reflecting. The data obtained through observation, student works, and research notes. There are increasing of the students drawing ability that is indicated through the rise of KKM achievements as much 24,13 % in cycle 1 and 3,46 % from cycle 1 to cycle 2. The increasing from pre-cycle to cycle 2 is 27,59%. The that symmetrical and measured characteristic of LIPSI paper had helped students drawing activities toward significant improvement.Keywords: drawing, geometrical, ornaments, lipsi paper AbstrakPeningkatan Kemampuan Menggambar Ragam Hias Geometris Dengan Kertas LIPSI. Hasil kegiatan menggambar ragam hias geometris di SMPN 2 Gending cenderung belum menampakkan karakteristik ragam hias. Siswa kesulitan dalam mengorganisir bentuk-bentuk geometris menjadi motif dan mengembangkan pola atau pengulangan menjadi ragam hias, sehingga diperlukan media yang dapat membantu dan mempermudah siswa dalam menggambar. Penelitian ini bertujuan mendeskripsikan penerapan dan peningkatan kemampuan menggambar ragam hias geometris menggunakan kertas LIPSI. Penelitian ini adalah penelitian kuantitatif, dengan metode yang dipergunakan adalah Penelitian Tindakan Kelas model Hopkins dengan dua siklus. Pada masing-masing siklus dilakukan kegiatan perencanaan, tindakan, observasi, dan refleksi. Data diperoleh melalui observasi, karya siswa, dan catatan penelitian. Dari penelitian ini diperoleh adanya peningkatan kemampuan menggambar siswa yang ditandai melalui peningkatan pencapaian KKM (Kriteria Ketuntasan Minimal) sebesar 24,13 % pada siklus I, dan 3,46 % dari siklus I ke siklus II. Sehingga apabila dilihat secara keseluruhan peningkatan dari Prasiklus ke Siklus II adalah 27,59 %. Sifat dari kertas LIPSI yang simetris dan terukur membantu aktivitas peserta didik dalam menggambar, sehingga terjadi peningkatan yang signifikan.Kata kunci: menggambar, ragam hias, geometris, kertas lipsi
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Dissertations / Theses on the topic "Geometrical drawing"

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Vigneron, Pierre Antoine Emile. "Algorithms for computing some geometric diagrams /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?COMP%202002%20VIGNER.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 100-105). Also available in electronic version. Access restricted to campus users.
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Stokes, Mark Richard. "Geometrical properties of strip produced by plasto-hydrodynamic drawing." Thesis, Sheffield Hallam University, 1994. http://shura.shu.ac.uk/20406/.

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A detailed investigation is carried out for the novel process of Plasto-hydrodynamically produced wide strip. In this process the conventional die is replaced by a pressure head with a rectangular hole. The internal geometry of the hole is shaped such that a convergent fluid flow is produced. This flow causes the production of hydrodynamic forces within the pressure head, namely hydrodynamic pressure and surface shear stresses. These forces are of sufficient magnitude that plastic deformation is induced within the working material. An in-depth theoretical analysis has been undertaken to establish the relevance of the geometrical parameters of the pressure head for the control of deformation performance. An extensive study of the solution algorithm for this type of plasto-hydrodynamic problem is made and modifications introduced to improve die dynamic response of the model. A new non-Newtonian model of the process has been developed using a power law type constitutive equation for the fluid behaviour. The modifications to the solution algorithm were also included in this new model. The plasto-hydrodynamic models developed during this work were subjected to numerical optimisation. The non-linear pattern search algorithm was utilised for this purpose. Correlations between the optimum geometrical form for the pressure head and process velocity were established. A study was made of the effect of varying the non-Newtonian parameters and the optimum pressure head geometry. A Computational Fluid Dynamic (CFD) analysis was made of the Hydrostatic assumption. This assumption allows major simplifications during the derivation of the models of the process. Its validity is established along with the impact of side leakage on the pressure field. An experimental programme was undertaken to provide data to establish a correlation between the predictions of process performance and an analysis of the output form of the strip produced by the process. The material used for the study was commercially available soft copper strip. The maximum reduction in area produced was 12% approximately.
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Hauptmann, Marek, Sebastian Kaulfürst, and Jens-Peter Majschak. "Advances on Geometrical Limits in the Deep Drawing Process of Paperboard." NC State University, 2016. https://tud.qucosa.de/id/qucosa%3A30229.

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The geometrical limits of the deep drawing process of paper to advanced shapes are not known. This report examines the technological limits of convex elements of the base shape in relation to the drawing height and shows the material behavior in the bottom radius of 3D shapes with regard to special material properties. In the bottom radius, non-compressed wrinkles occurred due to the in-plane compression, but wrinkles were reduced by an increased blank holder force or tool temperatures and improved extensibility or in-plane compressive strain. The forming ratio during deep drawing (drawing height related to base diameter) was increased to a value of more than 1 by a blank holder force, which increased with the drawing height such that the initial blank holder force was reduced concurrently. Straight sections in the base shape reduced the risk for ruptures in the edge radii of rectangular shapes, producing a forming ratio in these radii of 2.5. The forming ratio was further supported by a pattern of creasing lines at the blanks with a radial orientation and a number near the expected maximum number of wrinkles. The spring-back at rectangular shapes mainly depended on the drawing height and edge radius.
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Kaplan, Craig S. "Computer graphics and geometric ornamental design /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/6887.

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Wu, Xiaobin. "Efficient, tight bounding volumes for subdivision surfaces." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011460.

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Loop, Charles Teorell. "Generalized B-spline surfaces of arbitrary topological type /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/6888.

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Haxhi, Karen Kleinschmidt. "The euclidean and hyperbolic geometry underlying M.C. Escher's regular division designs /." View abstract, 1998. http://library.ctstateu.edu/ccsu%5Ftheses/1491.html.

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Thesis (M.S.) -- Central Connecticut State University, 1998.
Thesis advisor: Dr. Jeffrey McGowan. "...in partial fulfillment of the requirements for the degree of Master of Science." Includes bibliographical references (leaves [78-79]).
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Yeung, Lee-hung Albert, and 楊利雄. "The use of geometer's sketchpad to facilitate new learning experience in geometry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B29401264.

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Branda, Ewan E. (Ewan Edward) 1964. "Drawing interfaces : building geometric models with hand-drawn sketches." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/64901.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1998.
Includes bibliographical references (p. 49-51).
Architects work on drawings and models, not buildings. Today, in many architectural practices, drawings and models are produced in digital format using Computer-aided Design (CAD) tools. Unquestionably, digital media have changed the way in which many architects perform their day to day activities. But these changes have been limited to the more prosaic aspects of practice. To be sure, CAD systems have made the daily operations of many design offices more efficient; nevertheless, they have been of little use - and indeed are often a hindrance - in situations where the task at hand is more conjectural and speculative in nature, as it is during the early stages of a project. Well-intentioned efforts to insinuate CAD into these aspects of practice have only served to reveal the incongruities between the demands of designer and the configuration of the available tools. One of the chief attributes of design practice is that it is action performed at a distance through the agency of representations. This fundamental trait implies that we have to understand how computers help architects describe buildings if we are to understand how they might help architects design buildings. As obvious as this claim might seem, CAD programs can be almost universally characterized by a tacit denigration of visual representation. In this thesis, I examine properties of design drawings that make them useful to architects. I go on to describe a computer program that I have written that allows a designer to build geometric models using freehand sketches. This program illustrates that it is possible to design a software tool in a way that profits from, rather than negates, the power of visual representations.
by Ewan E. Branda.
M.S.
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Alves, José Manuel Barbosa. "Concepção de interfaces gráficos e comunicação de informação a máquinas de comando numérico computadorizado da indústria de mobiliário." Master's thesis, Instituições portuguesas -- UP-Universidade do Porto -- -Faculdade de Arquitectura, 1997. http://dited.bn.pt:80/30265.

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Books on the topic "Geometrical drawing"

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Gardner, Richard J. Geometric tomography. Cambridge: Cambridge University Press, 1995.

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Seymour, Dale. Geometric design, step by step. Palo Alto, CA: D. Seymour Publications, 1988.

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Lister, Sutcliffe G., and Underhill Roy, eds. Compendium of drawing and drawing instruments. [Harrisburg, PA]: National Historical Society, 1990.

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Aterini, Aterino. Geometria e strutture. Firenze: Alinea, 1990.

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Salvatore, Barba, ed. Modelli grafici dell'architettura e del territorio. [Salerno, Italy]: CUES, 2013.

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Seymour, Dale. Line designs: Designs and drawings. Sunnyvale, CA: Creative Publications, 1994.

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Paulsen, Hermann. Hermann Paulsen: Unmögliche Figuren. Kiel: Nieswand, 1998.

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Yi, Kyu-hyŏk. Ipch'e, p'yŏnhwa sajŏn. 2nd ed. Sŏul T'ŭkpyŏlsi: Uram, 1991.

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Lauria, Raquel A. Perspectiva: Proceso constructivo. 2nd ed. [Buenos Aires]: Editorial de Belgrano, 1996.

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J, Miller Margaret. Stunning AnglePlay quilts: 6 projects, 42 exciting blocks, easy, no-math piecing. Lafayette, Calif: C&T Pub., 2008.

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Book chapters on the topic "Geometrical drawing"

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Rathnam, K. "Geometrical Construction." In A First Course in Engineering Drawing, 13–24. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5358-0_2.

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Stumme, Gerd, and Rudolf Wille. "A geometrical heuristic for drawing concept lattices." In Graph Drawing, 452–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/3-540-58950-3_399.

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Tornincasa, Stefano. "Dimensioning with Geometrical Tolerances." In Technical Drawing for Product Design, 41–47. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60854-5_3.

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Tornincasa, Stefano. "Dimensioning with Geometrical Tolerances." In Technical Drawing for Product Design, 41–47. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-51187-5_3.

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Tornincasa, Stefano. "Geometrical Specification for Non-Rigid Parts." In Technical Drawing for Product Design, 283–90. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60854-5_12.

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Tornincasa, Stefano. "The Geometrical Product Specification (GPS) Language." In Technical Drawing for Product Design, 11–39. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60854-5_2.

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Tornincasa, Stefano. "Geometrical Specification for Non-rigid Parts." In Technical Drawing for Product Design, 329–36. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-51187-5_12.

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Tornincasa, Stefano. "The Geometrical Product Specification (GPS) Language." In Technical Drawing for Product Design, 11–39. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-51187-5_2.

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Noma, T., T. L. Kunii, N. Kin, H. Enomoto, E. Aso, and T. Yamamoto. "Drawing Input Through Geometrical Constructions: Specification and Applications." In New Trends in Computer Graphics, 403–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83492-9_35.

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Brunel, Edith, Andreas Gemsa, Marcus Krug, Ignaz Rutter, and Dorothea Wagner. "Generalizing Geometric Graphs." In Graph Drawing, 179–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25878-7_18.

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Conference papers on the topic "Geometrical drawing"

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Menchi, Aarón Rivas, Hugo I. Medellín Castillo, Dirk F. de Lange, and Pedro de J. García Zugasti. "Influence of Geometrical Parameters on the Maximum Deep Drawing Height of Rectangular Parts." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36924.

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The deep drawing process is commonly used in the industry because its ability to produce parts with reduced weight and good mechanical properties at a high production rates. However, the elasto-plastic deformation mechanism of deep drawing is complex and difficult to analyse; this because there are many process parameters and variables involved that affect the quality of final products. Among these variables are the geometric parameters, which have been proved to have a great influence on the process. Theoretical and experimental analyses reported in the literature have been mainly focused on conventional cylindrical cup deep drawing. Few research works have dealt with the deep drawing analysis of non-cylindrical parts, particularly the influence of geometrical parameters on the deep drawing performance. This paper presents an analysis of the effect of geometrical parameters on the allowable deep drawing height (DDH) of rectangular parts before fracture. The aim is to identify the influence of the main geometrical parameters on the DDH, Numerical analyses based on the Finite Element Method (FEM) were used to investigate the influence of geometrical parameters, such as the radii, the metal sheet thickness, and the aspect ratio, among others, on the DDH.
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Rodriguez, Carlos F., and Ana Maria Polanco. "Re-Inventing Drawing Courses for Mechanical Engineers." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42336.

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Traditionally, drawing courses in engineering curricula have been devoted to develop drawing abilities in students. In recent years, many questions about their significance in young engineer’s education have been formulated, and many institutions decided to reduce the number of drawing courses or even to eliminate them from the compulsory syllabus. This paper presents a different concept to deal with the drawing courses in mechanical engineering education. It is based on the fundamental purpose of drawing for engineers: to allow the communication of technical ideas. The new course is focused on geometrical conception and technical specification of objects and assemblies. We propose a project based methodology in order to reinforce the links between geometrical design, drawing, manufacturing, and assembly. The structure of the course is presented including examples of class activities and proposed projects. Results of the implementation of this new course are also discussed.
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Du, Xuedong, and Li-na Yi. "Identifying faces based on three-dimensional geometrical properties from a single 2D line drawing." In 2011 International Conference on Graphic and Image Processing. SPIE, 2011. http://dx.doi.org/10.1117/12.914440.

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Turkoz, Mevlut, Dogan Acar, Murat Dilmec, and H. Selcuk Halkaci. "Investigation on the optimal geometrical parameters for cylindrical cups in warm hydromechanical deep drawing process." In 2017 8th International Conference on Mechanical and Aerospace Engineering (ICMAE). IEEE, 2017. http://dx.doi.org/10.1109/icmae.2017.8038634.

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Agrawal, Anupam, N. Venkata Reddy, and P. M. Dixit. "Determination of Minimum Blankholding Pressure for Producing Wrinkle Free Products in Multistage Deep Drawing." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50094.

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Wrinkling in the flange region has been observed during redrawing operation by few researchers. In the present work an analysis methodology, based on a combination of upper bound and energy approaches, is proposed for the prediction of number of wrinkles and minimum blankholding pressure necessary to avoid wrinkling in redrawing operation. Thickness variation predicted by the upper bound formulation is used as input for the wrinkling analysis by assuming a suitable waveform based on geometrical and process conditions. The flange is constrained at both the ends, i.e. by the blank holder profile radius and at the die entry point (where the sheet enters into the die cavity). The waveform for present analysis is assumed such that it has zero displacement at both the ends (since it is constrained) and the maximum amplitude of the wave at some point in between those ends. The wrinkling predicted by the present methodology seems to be reasonably accurate considering the geometrical and process constraints of the redraw.
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Kaixiu, Y. "Computer Aided Straight Bevel Gearing Design and Parametric Drawing of a Bevel Gear by a Computer." In ASME 1989 Design Technical Conferences. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/detc1989-0131.

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Abstract A multiple objective function optimization design of straight bevel gearing with an advanced optimization method is described. The main parameters and geometric dimensions obtained with this algorithm are made use of to make computer parametric drawing of bevel gear in accordance with gear structure and by adopting currently high-level FORAUT interface software and the U. S.-made AUTOCAD autoplotting package, thus organically combining mechanical design calculation with the drawing of graphs. The said program is applicable to the optimization design of straight bevel gearing with arbitrary shaft angles and different pressure angles (α = 14.5°, 20°, 22.5°, 25°) to obtain ideal optimization parameters or engagement parameters, geometrical parameters and strength performance parameters and plot the correspnnding part working diagram. The results of application show that the system proposed is feasible, the algorithm explicit, the program operation reliable, convenient and flexible.
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Garcia Zugasti, Pedro de Jesus, Erick M. Salcedo Murillo, Hugo I. Medellín Castillo, Dirk Frederik De Lange, and Juan Gabriel Sandoval Granja. "Sheet Metal Blank Development of a Deep Drawing Fan Support Using Theoretical Rules and FEM." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38537.

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Deep drawing is a cost effective sheet metal forming process to produce many industrial components. However, complex geometrical drawn parts are difficult to form due to several modes and conditions of the material flow. Commonly problems associated to the forming operation are wrinkling and tearing defects, which affect the cost and quality of the parts. Actually, there are not theoretical methods developed in the literature yet, so the trial and error method are used to reduce or eliminate the deep drawing defects or inclusive is utilized in the earlier production stages, resulting in higher costs and longer production times. This paper describe a proposed solution to reduce or eliminate the wrinkles defects on the flanges of an industrial fan support that result from applying the forming process. An analysis procedure based on the development of the correct sheet metal blank considering three different blank geometries was proposed. The analysis include the analytical methods available in the literature, the simulation with a computer program based on the Finite Element Method (FEM) and experimentation. FEM model, simulation and results, these were validated by measuring the thickness profile on the flanges of a deep drawing part, before and after the procedure implementation. The results have shown that combining both the analytical and FEM methods, were possible to know the influence degree of the sheet metal blank geometry to reduce or eliminate the wrinkle defect and these can be used as an effective design tool.
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Ali, Amr S. H. R., Akram M. S. Ali, Youssef W. R. Amin, and Salah H. R. Ali. "The Important Role of GD&T in Mechanical Drawing, Design and Manufacturing for Students of Engineering Institutes." In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2052.

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<div class="section abstract"><div class="htmlview paragraph">Mechanical drawing plays an important role in managing, designing and implementing engineering projects, especially in the field of the automotive industry. The need for accuracy in element design and manufacturing is greater now than ever before in engineering industries. In order to increase accuracy, the part design and function must be clearly communicated between the design engineer and the manufacturing technicians, especially in automotive industry and feeder industries projects. Geometric Dimensions and Tolerances (GD&amp;T) system of elements determines the quality, importance and price of the designed product. The standard used in the United States to define GD&amp;T methodology is ASME Y14.5-2009 while the standard used in Europe is ISO 1101-2017. This article discussed the importance of using GD&amp;T system including the types of geometrical features, limitations and accuracy, datum references frame and feature control frame to handle these symbols seamlessly. Moreover, the paper included a proposal to draw and design a drive shaft as a mechanical element to become a prototype when manufactured, with the aim of distributing it to achieve the highest possible quality. The performance evaluation was verified by distributing closed-ended questionnaires with a Likert scale of five answer choices. The sample size of students who provided answers was 33 students from the mechatronics engineering program. The results showed that more than 86% of mechanical drawing students showed great interest in the GD&amp;T system lecture on the proposed drawing-sheet. While more than 83% were very satisfied with the inclusion of the GD&amp;T system in the proposed mechanical drawing-sheet. In addition, the drawing and design took into account that the project operations are carried out with the least amount of waste of raw materials and reduce project risk. This is for the purpose of raising the educational and skill level of students in engineering colleges and higher institutes and technicians in automobile companies and their feeding industries.</div></div>
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Dancholvichit, Nattasit, Srinivasa Salapaka, and Shiv Kapoor. "Thermoplastic Forming Process for Manufacturing Arbitrary Blade Edge Geometries From Bulk Metallic Glass." In ASME 2022 17th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/msec2022-80859.

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Abstract In corneal surgery, several incision instruments including the curvilinear or straight incision blades are required to construct a scleral tunnel to ensure that the wound is self-sealing after the operation. Bulk metallic glass (BMG) is proving to be a good candidate for making surgical blades, where sharp edges can be produced through a thermoplastic molding and a drawing process implemented by designing and controlling the drawing velocity at supercooled temperature. This article presents a mechanistic approach to obtain drawing velocity profile of drawing actuators that accommodates various shapes of the blade edges without having to carry out the entire extensional drawing process, which is extensive and tedious. To manufacture the multi-facet BMG knife blade edges that result in good quality, the velocity profile is developed based on the filament stretching process and the geometry and shape of the mold along with the blade profile to maintain the imposed flow stress during the blade edge formation. Two types of geometrical transformational features including drawing distance and offset angle of the draw direction to the profile, are considered to ensure that the flow stress of the drawing process is in the desirable Newtonian region. To demonstrate the feasibility of the proposed approach, H∞ control design is used to facilitate consistent good quality necking of the blade formation. The velocity profile of 45° and crescent BMG blades are generated and used to manufacture these blades. The 45° blade edge samples are successfully manufactured with the average of X-Z, X-Y straightness, and the edge radius of the blade of 1.4 ± 0.5 μm, 1.4 ± 0.5 μm, and 42.4 ± 2.3 nm, respectively. The crescent blade edge samples are manufactured with roundness deviation, and the edge radius of the blade of 5.4 ± 1.6 μm, and 35.7 ± 4.2 nm, respectively. The effects of BMG sample temperature settings on the quality of the manufactured blades are presented.
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Bayesteh, Abdolreza, Farid Ahmad, and Martin B. G. Jun. "Computer-Aided Manufacturing (CAM) Software Development for Laser Machining." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65423.

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A novel computer-aided manufacturing (CAM) software system is proposed for laser ablation machining process. The algorithms and prototype software system is designed to offer efficient optimization of tool path for controlled delivery of laser energy into work-piece. The software simplifies part program creation and maintains constant velocity of the sample stage for each segment of a complex tool trajectory. These features enable efficient deposition of laser energy into the work piece and therefore, reduction in heat-affected zone is expected in laser ablation based micromachining. The reported software provides fast modification of tool path, automatic and efficient sequencing of path elements in a complicated tool trajectory, location of reference point and automatic fixing of geometrical errors in imported drawing exchange files (DXF) or DWG format files.
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Reports on the topic "Geometrical drawing"

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Hawley and Grimley. PR-015-08611-R01 Development of Clamp-On Ultrasonic Meter Installation Guidelines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), July 2012. http://dx.doi.org/10.55274/r0010774.

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Clamp-on ultrasonic meters remain of interest to the natural gas measurement community because of their potential to provide reasonable measurement accuracy without the need for piping modifications or service interruptions. The applications where clamp-on meters have been successfully applied include temporary measurement while a primary device is unavailable and diagnosing abnormal flow behaviors. The objective of this project was to examine existing public literature concerning the operation and application of clamp-on ultrasonic meters and to use this information to create a guideline document for these meters. As part of the process of establishing the guidelines document, the most significant areas where experimental results are lacking were to be identified. A total of only 20 documents in the public domain were discovered concerning clamp-on ultrasonic meters. These documents were summarized and the important conclusions were drawn from the documents and used to help create a draft guidelines document for the use of clamp-on ultrasonic meters in gas applications. The guidelines provide an overview of different geometric, operational, and installation effects that can affect the operation of clamp-on ultrasonic meters. A number of areas without substantial experimental results were identified and testing was recommended to systematically establish the performance envelope for one size of clamp-on ultrasonic meters. The suggested testing was intended as a first step in reducing the gaps in meter performance data.
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