Cad Data Transfer For Solid Models
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Cad Data Transfer For Solid Models
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Author : E.G. Schlechtendahl
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Cad Data Transfer For Solid Models written by E.G. Schlechtendahl and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Computers categories.
Principal authors: U. Kroszynski, B. Palstr9Sm 1.1 The evolution of concepts and specifications for CAD data exchange The CAD/CAM community has witnessed, during the last decade, the appearance of several specifications as well as proposals for standards which either attempt to cover wider areas or to be more reliable and stable than the others. With the rapid evolution of both hardware and software, the capabilities offered by CAD systems and CAD based application systems are far more advanced than they were only ten years ago, even when they are now based on micro-computers or personal comput ers. The situation with standards, however, is not and cannot be so. In order to be reliable and accepted by a wide community of both vendors and users, a standard has to be sta ble. This implies a life span of at least a decade. This also implies that the standard has to be general and flexible enough to accommodate present as well as expected future developments. 1.1.1 IGES The initial development of concepts for CAD data exchange is strongly influenced by the US Integrated Computer Aided Manufacturing (ICAM) programme, that dealt with the development of methods for data exchange. In September 1979, a subgroup was estab lished with participation of the National Bureau of Standards, the General Electric Com pany, and the Boeing Company. The result of this effort was the Initial Graphics Exchange Specification (IGES) that was published as a NBS report [61] in 1980.
Solid Modelling And Cad Systems
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Author : Ian Stroud
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-05-02
Solid Modelling And Cad Systems written by Ian Stroud and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-05-02 with Technology & Engineering categories.
Solid Modelling and CAD Systems gives users an insight into the methods and problems associated with CAD systems. It acts as a bridge between users who learn interfaces without understanding how they work and developers who create systems without understanding the needs of the users. The main feature of Solid Modelling and CAD Systems is a logical analysis of the techniques and basic solid modelling methods used in modern CAD systems. The book goes on to describe, among other subjects: two-dimensional shape definition methods, the command interface and graphics, databases and data exchange, early-phase design, and command files and command structures. Reading Solid Modelling and CAD Systems will help users understand the limitations of the techniques they are using and will enable practitioners to use CAD systems more efficiently. It is a valuable tool for designers, as well as for advanced undergraduate and postgraduate students. The exercises it contains allow readers to try out different aspects of the subject matter and the book also includes projects that can be used for teaching purposes.
Framework For A Structure Oriented Exchange Of Cad Data
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Author : Lubomir Krastev
language : en
Publisher: GRIN Verlag
Release Date : 2004-12-21
Framework For A Structure Oriented Exchange Of Cad Data written by Lubomir Krastev and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-12-21 with Computers categories.
Master's Thesis from the year 2002 in the subject Computer Science - Applied, grade: 2,3 (B), Technical University of Berlin (Institute for Machine Tools and Factory Management (IWF)), language: English, abstract: Integration of a CAx (Computer Aided x) system throughout the product life cycle and among different enterprises is a major issue for industrial competitiveness and collaboration. One of the main successful factors for CAx system integration is efficient methodology for EPDE (Engineering Product Data Exchange). Data exchange is the totality of establishing the approach for and the successful achievement of the transfer of data between two distinct CAx systems. Problem Statement: - Why does an exchanged CAD (Computer Aided Design) model lose some modelling properties? – Especially losses such as model tree (design intent) and features. - What reasons influence that phenomenon? - How can these losses be minimized? 2. Review state of the art of exchange strategies The review of exchange strategies is focused on which existing approaches are in use today, which capabilities are supported by them, which deficiencies they have, an understanding of state of the art is a precondition for beginning to deal with of the problem statement. 3. Analysis of modelling capabilities regarding feature modelling and structure representation The analysis begins with a short review of existing feature modelling techniques, which will build up a framework for the analysis process. Three CAD systems are analysed – Pro/Engineering, I-DEAS and UniGraphics. Typical models, with the frequently occurring features, are reviewed depending on the feature modelling method and structural representation. 4. Needs-identification The results of the analysis of modelling capabilities lead to the improvement of new methods and techniques. This defines the essential basis for the building of a concept framework. 5. Requirement definitions - How can the model-tree to be exchanged? - How will the exchanged model-tree act? 6. Outline of the thesis The material is organized in three major sections. The first one, the state of the art, examines the fundamentals of exchange approaches, the current state of scientific and commercial exchange approaches and further related technologies. The second one, presents the current state of feature modelling techniques and analyses of three commercial CAD systems according to feature modelling capabilities and structural representation. The next section, the concept framework, designs a concept framework fitting the requirement definitions.
Specification Of A Cad I Neutral File For Cad Geometry
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Author : E.G. Schlechtendahl
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Specification Of A Cad I Neutral File For Cad Geometry written by E.G. Schlechtendahl and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Computers categories.
1.1 PURPOSE The purpose of this paper is to document the results of Working Group (wireframes), Working Group 2 (solids) ,and Working Group 3 (surfaces) of the ESPRIT project 322 CAD*I (CAD Interfaces). The goal of these working groups is: 1. Develop a neutral file format for transfer of CAD data (curves, surfaces, and solid models) between CAD systems, and from the CAD domain to CAA (computer aided analysis) and CAM (computer aided manufacturing). 2. Develop pre- and post-processors with a number of representative CAD systems for this neutral file format. 3. Develop representative test model files and perform cycle tests and inter-system tests for CAD model transfer. 4. Contribute to the standardization activities in the national standardi zation bodies and in ISO for the establishment of a neutral file format for CAD data. This paper corresponds to a development stage as it was reached on July 6, 1987.
Specification Of A Cad I Neutral File For Cad Geometry
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Author : E G Schlechtendahl
language : en
Publisher:
Release Date : 1987-09-09
Specification Of A Cad I Neutral File For Cad Geometry written by E G Schlechtendahl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987-09-09 with Computer-aided design categories.
Specification Of A Cad I Neutral File For Cad Geometry
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Author : E.G. Schlechtendahl
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Specification Of A Cad I Neutral File For Cad Geometry written by E.G. Schlechtendahl and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Computers categories.
ESPRIT Project 322, "CAD Interfaces", has been established to define the most important interfaces in CAD/CAM systems for data exchange, data base, finite element analysis, experimental analysis, and advanced modeling. The definitions of these interfaces are being elaborated in harmony with international standardization efforts in this field. One principal goal of the project is to develop techniques for the exchange of CAD information between CAD systems, and from the CAD domain to CAA (Computer Aided Analysis) and CAM (Computer Aided Manufacturing). This volume presents a proposal for a neutral file format for CAD data: curves, surfaces, and solids. The specification is based on a reference schema for CAD data bases and is defined informally with respect to its semantics and formally with respect to its syntax. This volume is a revised edition of "Specification of a CAD*I Neutral File for Solids" Version 3.2. The revision reflects the enhancements which result from the implementation of communication processors in eight different CAD systems and from the practical exchange of solid models between these systems. Due to the close interaction between the CAD*I project and the coming-up international standard STEP this specification also serves as an introduction to the geometry model that will be included in the future international standard.
3d Cad
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Author : Hiroshi Toriya
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
3d Cad written by Hiroshi Toriya and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Computers categories.
3D CAD is one of the most important technologies of the 90s for the engineering and manufacturing world. 3D CAD systems can provide a competitive edge in the development of new products. This book presents the development of a three-dimensional CAD system and its wide range of applications. It describes the concepts of solid models, and the theory of curves and surfaces and it illustrates these concepts through "reals world" applications.
Handbook Of Solid Modeling
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Author : Donald E. LaCourse
language : en
Publisher: McGraw-Hill Companies
Release Date : 1995
Handbook Of Solid Modeling written by Donald E. LaCourse and has been published by McGraw-Hill Companies this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Technology & Engineering categories.
A complete reference and working guide to this vitally important methodology, presenting valuable advice and insight from more than 30 of the top international design experts. Readers will find detailed information on the latest solids modeling concepts and techniques, hardware and software, data exchange, application, and trends in the field.
Theory And Practice Of Geometric Modeling
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Author : Wolfgang Straßer
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Theory And Practice Of Geometric Modeling written by Wolfgang Straßer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This book is a result of the lectures and discussions during the conference "Theory and Practice of Geometric Modeling". The event has been organized by the Wilhelm-Schickard-Institut fiir Informatik, Universitat Tiibingen and took place at the Heinrich-Fabri-Institut in Blaubeuren from October 3 to 7, 1988. The conference brought together leading experts from academic and industrial research institutions, CAD system developers and experien ced users to exchange their ideas and to discuss new concepts and future directions in geometric modeling. The main intention has been to bridge the gap between theoretical results, performance of existing CAD systems and the real problems of users. The contents is structured in five parts: A Algorithmic Aspects B Surface Intersection, Blending, Ray Tracing C Geometric Tools D Different Representation Schemes in Solid Modeling E Product Modeling in High Level Specifications The material presented in this book reflects the current state of the art in geometric modeling and should therefore be of interest not only to university and industry researchers, but also to system developers and practitioners who wish to keep up to date on recent advances and new concepts in this rapidly expanding field. The editors express their sincere appreciation to the contributing authors, and to the members of the program committee, W. Boehm, J. Hoschek, A. Massabo, H. Nowacki, M. Pratt, J. Rossignac, T. Sederberg and W. Tiller, for their close cooperation and their time and effort that made the conference and this book a success.
Cad Geometry Data Exchange Using Step
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Author : Helmut J. Helpenstein
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Cad Geometry Data Exchange Using Step written by Helmut J. Helpenstein and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Computers categories.
The Product Data Technology Advisory Group, short PDTAG, was established on 30 September 1992 under the auspices of the ESPRIT CIME Division of the Directorate General XIII of the European Commission. Its goals include promoting European cooperation and improving the European infrastructure in Product Data Technology, particularly in connection with the new standard STEP (ISO 10303). The dissemination of information on Product Data Technology and on European contributions to STEP is of crucial importance to this development. The current volume is the first title in a new PDTAG subseries to Springer Publishers' Research Reports ESPRIT. This new subseries intends to form a comprehensive repository of publications on Product Data Technology resulting from ESPRIT Projects and from European contributions to standardisation based on ISO/STEP. PDTAG welcomes the opportunity to make this information more accessible under the format of a coherent subseries within the established framework of Research Reports ESPRIT. Much valuable background on the new international PDT standard can thus be found in the same collection.