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Author: Lubomir Krastev Publisher: GRIN Verlag ISBN: 3638333671 Category : Computers Languages : en Pages : 104
Book Description
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.
Author: Lubomir Krastev Publisher: GRIN Verlag ISBN: 3638333671 Category : Computers Languages : en Pages : 104
Book Description
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.
Author: Pieter van der Wolf Publisher: Springer Science & Business Media ISBN: 1461527686 Category : Technology & Engineering Languages : en Pages : 231
Book Description
Since the early 1980s, CAD frameworks have received a great deal of attention, both in the research community and in the commercial arena. It is generally agreed that CAD framework technology promises much: advanced CAD frameworks can turn collections of individual tools into effective and user-friendly design environments. But how can this promise be fulfilled? CAD Frameworks: Principles and Architecture describes the design and construction of CAD frameworks. It presents principles for building integrated design environments and shows how a CAD framework can be based on these principles. It derives the architecture of a CAD framework in a systematic way, using well-defined primitives for representation. This architecture defines how the many different framework sub-topics, ranging from concurrency control to design flow management, relate to each other and come together into an overall system. The origin of this work is the research and development performed in the context of the Nelsis CAD Framework, which has been a working system for well over eight years, gaining functionality while evolving from one release to the next. The principles and concepts presented in this book have been field-tested in the Nelsis CAD Framework. CAD Frameworks: Principles and Architecture is primarily intended for EDA professionals, both in industry and in academia, but is also valuable outside the domain of electronic design. Many of the principles and concepts presented are also applicable to other design-oriented application domains, such as mechanical design or computer-aided software engineering (CASE). It is thus a valuable reference for all those involved in computer-aided design.
Author: Timothy J. Barnes Publisher: Springer Science & Business Media ISBN: 1461535581 Category : Technology & Engineering Languages : en Pages : 205
Book Description
When it comes to frameworks, the familiar story of the elephant and the six blind philosophers seems to apply. As each philoso pher encountered a separate part of the elephant, each pronounced his considered, but flawed judgement. One blind philosopher felt a leg and thought it a tree. Another felt the tail and thought he held a rope. Another felt the elephant's flank and thought he stood before a wall. We're supposed to learn about snap judgements from this alle gory, but its author might well have been describing design automation frameworks. For in the reality of today's product development requirements, a framework must be many things to many people. xiv CAD Frameworks: Integration Technology for CAD As the authors of this book note, framework design is an optimi zation problem. Somehow, it has to be both a superior rope for one and a tremendous tree for another. Somehow it needs to provide a standard environment for exploiting the full potential of computer-aided engineering tools. And, somehow, it has to make real such abstractions as interoperability and interchangeability. For years, we've talked about a framework as something that provides application-oriented services, just as an operating system provides system-level support. And for years, that simple statement has hid the tremendous complexity of actually providing those services.
Author: Yves Weinand Publisher: Routledge ISBN: 1000430596 Category : Technology & Engineering Languages : en Pages : 161
Book Description
Design of Integrally-Attached Timber Plate Structures outlines a new design methodology for digitally fabricated spatial timber plate structures, presented with examples from recent construction projects. It proposes an innovative and sustainable design methodology, algorithmic geometry processing, structural optimization, and digital fabrication; technology transfer and construction are formulated and widely discussed. The methodology relies on integral mechanical attachment whereby the connection between timber plates is established solely through geometric manipulation, without additional connectors, such as nails, screws, dowels, adhesives, or welding. The transdisciplinary design framework for spatial timber plate structures brings together digital architecture, computer science, and structural engineering, covering parametric modeling and architectural computational design, geometry exploration, the digital fabrication assembly of engineered timber panels, numerical simulations, mechanical characterization, design optimization, and performance improvement. The method is demonstrated through different prototypes, physical models, and three build examples, focusing specifically on the design of the timber-plate roof structure of 23 large span arches called the Annen Headquarters in Luxembourg. This is useful for the architecture, engineering, and construction (AEC) sector and shows how new structural optimization processes can be reinvented through geometrical adaptions to control global and local geometries of complex structures. This text is ideal for structural engineering professionals and architects in both industry and academia, and construction companies.
Author: Hassan A. Karimi Publisher: CRC Press ISBN: 1420068067 Category : Computers Languages : en Pages : 250
Book Description
When used together effectively, computer-aided design (CAD) and geospatial information systems (GIS) have a solid track record for streamlining decision making and reducing inefficiencies in the design, planning, and execution of critical operations and projects. And a growing number of engineering tasks in numerous fields-including design, archite
Author: Shane (Shengquan) Xie Publisher: Springer Science & Business Media ISBN: 184996341X Category : Technology & Engineering Languages : en Pages : 453
Book Description
Rapid One-of-a-kind Product Development discusses research in the development of new enabling technologies for small and medium companies. Scientific advancements presented include a novel product data modelling scheme to model product design, manufacturability and knowledge under a common data object; customised product development in a distributed environment; and new adaptive scheduling methods for the optimal production of a wide variety of customised products, taking into consideration all of the possible changes from customers and the uncertainties in manufacturing. The book also includes research towards a computer aided customer interface, which allows customer requirements and changes to be processed and integrated with technical designs in real time; adaptive and concurrent CAD methods and algorithms; and product modelling and system integration technologies. The reader will learn how to: • translate customer requirements to technical attributes; • develop new and innovative products to meet customer requirements and expectations; • evaluate and optimise a project design; • design production systems and use them efficiently; and • manage a variety of customised products. Rapid One-of-a-kind Product Development demonstrates how to develop new methods, tools and algorithms to address the problems in a mass customisation environment. It is a valuable source of information for researchers and engineers in the fields of design and manufacturing.
Author: Yuhua Luo Publisher: Springer Science & Business Media ISBN: 3642160654 Category : Computers Languages : en Pages : 308
Book Description
Many papers in this volume re?ect, to some degree, the active, rapid economic developmentincertaingeographicareasintheworldsuchasChina,Japan,South Korea,and EasternEurope, which demand cooperative work,particularly co- erative engineering, more than ever. New concepts and new ideas of cooperative design, visualization, and engineering have emerged to meet the higher demand resulting from the economic development in these areas. Another trend among the papers in this volume is to apply existing concepts and methods to new application areas. The emergence of new concepts can be considered as a signal of fruitful research with its maturity in the ?eld. This can be found in the papers of this year’s conference. Cooperative design, visualization, and engineering via cloud computing is a new concept presented in a group of papers in this volume. The concept of cloud has been proposed for cooperative manufacturing, large scale cooperative simulation, and visualization, etc. Applying existing concepts to new application areas or creating new me- ods based on them is a logicaldirection to takefull advantageof the cooperative design, visualization, and engineering technology. This is no doubt the best way to widen anddeepen the knowledgein the ?eld. Typicalexamples in this volume include the cooperative visualization of DNA microarray data in bioinform- ics, astrophysical simulations, natural disaster simulations, and cooperative risk assessment, etc. As the volume editor, I would like to congratulate all the authors for their research and development results, raising cooperative technology to a new level.
Author: Franz J. Rammig Publisher: Springer ISBN: 0387348808 Category : Technology & Engineering Languages : en Pages : 279
Book Description
Design frameworks have become an important infrastructure for building complex design systems. Electronic Design Automation Frameworks presents a state-of-the-art review of the latest research results covering this topic; results which are also of value for other design frameworks. The book contains the selected proceedings of the Fourth International Working Conference on Electronic Design Frameworks, organized by the International Federation for Information Processing and held in Gramado, Brazil, in November 1994.
Author: Ghassan Aouad Publisher: Routledge ISBN: 1134005997 Category : Architecture Languages : en Pages : 137
Book Description
Recent years have seen major changes in the approach to Computer Aided Design (CAD) in the architectural, engineering and construction (AEC) sector. CAD is increasingly becoming a standard design tool, facilitating lower development costs and a reduced design cycle. Not only does it allow a designer to model designs in two and three dimensions but also to model other dimensions, such as time and cost into designs. Computer Aided Design Guide for Architecture, Engineering and Construction provides an in-depth explanation of all the common CAD terms and tools used in the AEC sector. It describes each approach to CAD with detailed analysis and practical examples. Analysis is provided of the strength and weaknesses of each application for all members of the project team, followed by review questions and further tasks. Coverage includes: 2D CAD 3D CAD 4D CAD nD modelling Building Information Modelling parametric design, virtual reality and other areas of future expansion. With practical examples and step-by step guides, this book is essential reading for students of design and construction, from undergraduate level onwards.
Author: Lubomir Krastev
Author: Lubomir Krastev
Author: Pieter van der Wolf
Author: Tad A. Weiss
Author: Timothy J. Barnes
Author: Yves Weinand
Author: Hassan A. Karimi
Author: Shane (Shengquan) Xie
Author: Yuhua Luo
Author: Franz J. Rammig
Author: Ghassan Aouad