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Design Reuse and Automation: On High Level CAD Modeling for Multidisciplinary Design and Optimization
Linköping University, Department of Mechanical Engineering, Machine Design. Linköping University, The Institute of Technology.
2009 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

THIS THESIS EXPLORES novel CAD modeling methods for design reuse and tomation realization. It will be demonstrated that by applying the described methods, CAD models can be utilized as framework integrators in order to generate geometric input for various engineering analysis tools. Multidisciplinary design can as a result be facilitated in early design due to decreased manual model re-definitions. Furthermore, due to the complex dependency between analysis tools, certain product characteristics can only be evaluated by applying a holistic design approach. Therefore, by applying multidisciplinary design, the level of knowledge about the product will increase.

To simulate and evaluate the properties and behavior of an engineering product during design, the geometry has to be constantly re-estimated. CAD tools can be employed to produce the requested geometry. However simplifications introduced in the geometry, due to incomplete and imprecise knowledge available in early design, result in inaccurate geometries. Thus re-modeling has to occur in a frequent rate in order to achieve sufficiently accurate models. Hence CAD tool are traditionally applied in later stages of design when the geometry of the product is more or less defined and CAD is applied to generate drafting and technical drawings for manufacturing purposes

It is therefore proposed that geometries for repetitive components are stored in so called high level templates and instantiated in the CAD model parametrically. Upon instantiation, each instance can be modified parametrically. Given the fact that the instantiation process is automated, the deletion and replacement procedures are also automatic, enabling easier model modifications in the design process.

To estimate the gained advantage when applying the proposed methods, holistic design frameworks are implemented. The frameworks consist of a combination of various engineering tools which are integrated through a user interface. Given that an information flow between the design tools is implemented, many aspects of design is computed and optimized concurrently. Consequently in order to draw general conclusion concerning geometric modeling, two different design applications with dissimilar requirements are studied in this work, namely aircraft and industrial robots.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press , 2009. , 51 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1419
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-52088Local ID: LIU-TEK-LIC-2009:27ISBN: 978-91-7393-512-8 (print)OAI: oai:DiVA.org:liu-52088DiVA: diva2:279445
Presentation
2009-10-30, C3, C-huset, Campus Valla, Linköpings universitet, Linköping, 10:15 (English)
Opponent
Supervisors
Available from: 2009-12-22 Created: 2009-12-03 Last updated: 2010-04-07Bibliographically approved
List of papers
1. Exploring Parametric CAD-models in Aircraft Conceptual Design
Open this publication in new window or tab >>Exploring Parametric CAD-models in Aircraft Conceptual Design
2008 (English)In: 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2008, Reston, VA, USA: American Institute of Aeronautics and Astronautics, 2008Conference paper, Published paper (Other academic)
Abstract [en]

The ever fast growing information technology is enabling the re-definition of early stages of aircraft design which have been restricted mostly by statistical and empirical approaches because of lengthy and costly simulation times. This paper will describe a methodology based on parametric and generic CAD modeling methods which will save time when performing repetitive tasks automatically. Furthermore, it enables greater comprehension by giving a holistic view of the aircraft systems because of the proposed multidisciplinary and modular framework. The framework involves a centralized easy to use interface which is coupled to a series of analyses tools. The proposed methods have been applied in student projects of the course -Aircraft Conceptual Design- from Linköping University where it has shown great promises.

Place, publisher, year, edition, pages
Reston, VA, USA: American Institute of Aeronautics and Astronautics, 2008
Keyword
Aircraft design, CAD, Multidisciplinary Design, Panel Code Aerodynamic analysis
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-43593 (URN)10.2514/6.2008-2162 (DOI)74349 (Local ID)74349 (Archive number)74349 (OAI)
Conference
49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 16th AIAA/ASME/AHS Adaptive Structures Conferenc, Schaumburg, Illinois, USA, 7-10 April 2008
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-08-19Bibliographically approved
2. Aircraft Parametric 3D Modeling and Panel Code Analysisfor Conceptual Deisgn
Open this publication in new window or tab >>Aircraft Parametric 3D Modeling and Panel Code Analysisfor Conceptual Deisgn
2008 (English)In: International Council of the Aeronautical Sciencess ICAS, 2008: Vol. 1, Anchorage, Alaska, USA: International Council of the Aeronautical Sciences (ICAS) , 2008, 159-167 p.Conference paper, Published paper (Other academic)
Abstract [en]

The ever fast growing information technology is enabling a re-definition of the early stages of aircraft design which have been restricted to mostly statistical and empirical approaches because of lengthy and costly simulation times. A novel framework is being developed at Linköping University offering greater comprehension by enabling a holistic view of the aircraft systems with a multidisciplinary analysis approach, involving a centralized easy to use interface. This paper will depict the modules involving an aerodynamic panel code solver integrated to a parametric CAD model. The connection between these tools is made fully automatic, meaning that any modification on the CAD model will with a press of button be aerodynamically analyzed in the panel solver, including re-meshing and re-writing of a input file and finally re-distributing the output file to all other modules involved in the framework.

Place, publisher, year, edition, pages
Anchorage, Alaska, USA: International Council of the Aeronautical Sciences (ICAS), 2008
Keyword
Aircraft design, Knowledge based CAD, Multidisciplinary Design, Panel Code Aerodynamic analysis
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-43595 (URN)74351 (Local ID)978-1-60560-715-3 (ISBN)74351 (Archive number)74351 (OAI)
Conference
26th Congress of the International Council of the Aeronautical Sciences, Anchorage, Alaska, USA, September 14-19, 2008,
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-02-27Bibliographically approved
3. Integration of Parametric CAD and Dynamic Models for Industrial Robot Design and Optimization
Open this publication in new window or tab >>Integration of Parametric CAD and Dynamic Models for Industrial Robot Design and Optimization
2009 (English)In: Volume 3: 28th Computers and Information in Engineering Conference: Parts A and B, New York City, New York, USA: American Society of Mechanical Engineers (ASME) , 2009, 761-769 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents an approach of integration between multiple analysis tools that covers several engineering disciplines, used for robot design and optimization. There are three main components in this approach namely a highly flexible geometric model, a parametric dynamic simulation model, and a framework for integration of the models and execution of an optimization process through a user friendly interface. To illustrate the presented methodology an integrated analysis tool for an industrial robot is developed combining dynamic and geometric models in a parametric design approach. An optimization case is conducted to visualize the automation capabilities of the proposed framework, and enhance the early design phases for industrial robots.

Place, publisher, year, edition, pages
New York City, New York, USA: American Society of Mechanical Engineers (ASME), 2009
Keyword
Industrial robot design, Knowledge based CAD, Multidisciplinary Design, Optimization
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-43594 (URN)10.1115/DETC2008-49919 (DOI)000263939600075 ()74350 (Local ID)978-0-7918-4327-7 (ISBN)0-7918-3831-5 (ISBN)74350 (Archive number)74350 (OAI)
Conference
28th Computers and Information in Engineering Conference, Brooklyn, New York, USA, August 3–6, 2008
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-09-05Bibliographically approved
4. Design Automation of Modular Industrial Robots
Open this publication in new window or tab >>Design Automation of Modular Industrial Robots
2009 (English)In: ASME CIE09, San Diego, USA, Sep. 2009, 2009, 655-664 p.Conference paper, Published paper (Other academic)
Abstract [en]

This paper presents a novel approach for designing modular robots. There are two main components in this approach namely the modeling methodology of the robot and a framework for simulation of the models and execution of an optimization process.

To illustrate the presented methodology an integrated analysis tool for an industrial robot is developed combining dynamic and geometric models in a parametric design approach. An optimization case is conducted to visualize the automation capabilities of the proposed framework, and enhance the design for modular industrial robots.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-52472 (URN)10.1115/DETC2009-87271 (DOI)978-0-7918-4899-9 (ISBN)978-0-7918-3856-3 (ISBN)
Conference
ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2009; San Diego, CA; United States
Available from: 2009-12-22 Created: 2009-12-22 Last updated: 2014-10-02Bibliographically approved

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Tarkian, Mehdi

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