Practical Descriptive Geometry

1953 ◽  
Vol 37 (322) ◽  
pp. 316
Author(s):  
P. Shaw ◽  
Hiram E. Grant
Keyword(s):  
Descriptive Geometry

Unfoldings of the Circular Cylinders Having Non-Competitive Axles

2019 ◽  
Vol 17 (16) ◽  
pp. 52-55
Author(s):  
Carmen Popa ◽  
Violeta Anghelina ◽  
Octavian Munteanu
Keyword(s):  
Classical Method ◽  
Descriptive Geometry ◽  
Circular Cylinders ◽  
Intersection Curve ◽  
Engineering Sciences

Abstract The descriptive geometry constitues the foundation of the engineering sciences, so necessary to the specialists of this field. The aim of this paper is to establish the intersection curve between two cylinders and their unfoldings, by using the programmes:AutoCAD and Mathematica. We used the classical method and we first establish the intersection curve and then the cylinders unfoldings. To do this, we used the AutoCAD program. The same unfoldings can be obtained by introducing directly the curve equations (which are inferred) in Mathematica program.

scholarly journals Comparison of Computer Extended Descriptive Geometry (CeDG) with CAD in the Modeling of Sheet Metal Patterns

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 685
Author(s):  
Manuel Prado-Velasco ◽  
Rafael Ortiz-Marín
Keyword(s):  
Sheet Metal ◽  
Computer Aided Design ◽  
Parametric Modeling ◽  
Descriptive Geometry ◽  
The Novel ◽  
Forming Process ◽  
Solid Models ◽  
Design Software ◽  
Solid Edge ◽  
Aided Design

The emergence of computer-aided design (CAD) has propelled the evolution of the sheet metal engineering field. Sheet metal design software tools include parameters associated to the part’s forming process during the pattern drawing calculation. Current methods avoid the calculation of a first pattern drawing of the flattened part’s neutral surface, independent of the forming process, leading to several methodological limitations. The study evaluates the reliability of the Computer Extended Descriptive Geometry (CeDG) approach to surpass those limitations. Three study cases that cover a significative range of sheet metal systems are defined and the associated solid models and patterns’ drawings are computed through Geogebra-based CeDG and two selected CAD tools (Solid Edge 2020, LogiTRACE v14), with the aim of comparing their reliability and accuracy. Our results pointed to several methodological lacks in LogiTRACE and Solid Edge that prevented to solve properly several study cases. In opposition, the novel CeDG approach for the computer parametric modeling of 3D geometric systems overcame those limitations so that all models could be built and flattened with accuracy and without methodological limitations. As additional conclusion, the success of CeDG suggests the necessity to recover the relevance of descriptive geometry as a key core in graphic engineering.

Descriptive geometry: Designing surfaces

2021 ◽  
Author(s):  
Nikolay Sal'kov
Keyword(s):  
Higher Education ◽  
Geometric Design ◽  
Descriptive Geometry ◽  
Federal State ◽  
Educational Standards ◽  
Fields Of Study ◽  
Level Of Knowledge ◽  
Frame Method ◽  
State Educational

In the textbook, in addition to the geometric design of surfaces, the elements of analytical and parametric geometries are proposed that contribute to the design and bring the result to a higher level of knowledge, as well as a frame method for designing surfaces. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of the specialties "Architect" and " Designer of the architectural environment "(qualifications "bachelor", "specialist", "master"). It may be useful for students of other fields of study.

Innovative Approaches for Teaching Descriptive Geometry With CADD

1991 ◽  
Author(s):  
John G. Cherng
Keyword(s):  
Computer Aided Design ◽  
Descriptive Geometry ◽  
New Methods ◽  
Computer Aided ◽  
Cylindrical Solid ◽  
Aided Design ◽  
Innovative Approaches

Abstract This paper presents the innovative approaches that can be implemented in teaching descriptive geometry by using a Computer-Aided-Design-Drafting (CADD) software. Examples of line relations, line/surface relations, and plane/cylindrical solid intersections are given in the paper. The paper first discusses the principles of descriptive geometry, and then focuses on how these principles can be applied in a CADD environment. In addition, new methods that take advantage of CADD are also provided. The paper emphasizes creativity while solving descriptive problems by using a CADD software. Although all examples illustrated in CADKEY, the concepts revealed in this paper can be applied to other 3-D CADD software, such as AutoCAD 10 and will significantly improve the engineering student’s CADD skills.

scholarly journals 3D-Forming and Autodesk Autocad at the Initial Stage of Engineering Training of Specialists in Technical Areas

2018 ◽  
Vol 7 (3.5) ◽  
pp. 1 ◽  
Author(s):  
V V. Telegin ◽  
I V. Telegin ◽  
A S. Stepanov
Keyword(s):  
Educational Process ◽  
Descriptive Geometry ◽  
Educational Institutions ◽  
Higher Educational Institutions ◽  
Modern Computer ◽  
Initial Stage ◽  
Long Time ◽  
Higher Educational ◽  
Engineering Training ◽  
Integration Of Methods

Descriptive geometry is one of the disciplines that for a long time is the basis for training engineers of various specializations. However, with the advent of modern computer 3D technologies, the place and role in engineering of many traditional disciplines requires rethinking. The article is devoted to the integration of methods of descriptive geometry into the educational process of preparing students of higher educational institutions.   

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