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  • 1. Haoxue, Ma
    Integration of engineering analysis information in the product development process2002Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Keen competition in modern industry motivates companies to produce better products in shorter lead-time. In addition low cost is another key factor that leads commercial success of a product. In the last decade, rapid development and implementation of computer technologies have had great impact on the product development process. In the engineering area, the widely-used advanced computer-based tools enable engineers to design, analyze, simulate and test products by means of digital prototyping in the early phase of the product development process, and therefore dramatically help companies to produce better products with lower cost in shorter time. In practice, design of a complicate product is a complex work where several computer programs from different domains need to be involved. These programs normally need to combine, exchange, and share relevant product data to each other. For instance, Finite Element Analysis and Computational Fluid Dynamics may use geometrical data from a solid model and loads from a Multibody System to perform structural analysis and fluid analysis. The integration of engineering information becomes a more and more important issue in the product development process. However it is difficult to perfectly realize it due to some of the characteristics of engineering information: Heterogeneity. Programs use their own formats (domain specific or application specific) to store information and run on different operating systems and hardware. Distribution. With the development of computer network technology, a trend of engineering information systems has evolved from central systems towards distributed systems. Both data and computer programs are distributed and dynamic. This thesis deals with integration of engineering analysis information in the product development process. The research question is formulated as: How to integrate, share and exchange engineering analysis information in the product development process? The aim is to improve the ability and efficiency of integrating engineering analysis information by using modern database technology as well as other relevant technologies. A prototyping system consisting of a Mechanical Computer Aided Engineering (MCAE) system and an active mediating Database Management System (DBMS) is built. In this system the DBMS is embedded within the MCAE system, meaning that engineering applications not only gain general database capabilities such as storage management, uniform data model, query language and query processing, but also the possibility of combining data from different representations and data sources. In addition, this work presents an active database approach to enable exchange of engineering information among distributed team members in a timely manner. The distributed information is automatically synchronized between different places using database ECA rule and mediation. Only the changes are distributed to other places, which minimise the information transfer and enhance the performance. Members working at different locations can therefore interactively manipulate the same set of information at the same time.

  • 2. Haoxue, Ma
    et al.
    Babelon, R.
    Integration of a multibody system analysis tool and a CAD system2000In: Proceedings / Produktmodeller 2000, Linköping: Linköping University Electronic Press, 2000Conference paper (Refereed)
  • 3.
    Haoxue, Ma
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics.
    Johansson, Henrik
    Institutionen för tillämpad fysik,maskin- och materialteknik - Fd organisation. 16/09/2011..
    Orsborn, Kjell
    Department of Information Technology, Uppsala University.
    Distribution and synchronisation of engineering information using active database technology2003In: Proceedings of the Seventh International Conference on the Application of Artificial Intelligence to Civil and Structural Engineering: [Egmond-aan-Zee, the Netherlands, 2 - 4 September 2003] / [ed] B.H.V. Topping, Stirling: Civil-Comp Press , 2003Conference paper (Refereed)
    Abstract [en]

    Work collaboration is today normal practice in developing modern products. Engineering collaborative work involve a number of team members that need to share and exchange design ideas working with engineering analysis tools, such as mechanical computer aided engineering systems. This work presents a data mediation approach, using active database technology, which enables exchange of engineering information among distributed team members in a timely manner. The distributed data is automatically synchronised between different places using a database management system that support event-condition-action (ECA) database rules. Only the updates introduced at one location are distributed to the other locations, minimizing the information transfer and enhancing the performance. Members working at different locations can therefore interactively manipulate the same set of information at the same time

  • 4. Haoxue, Ma
    et al.
    Johansson, Henrik
    Orsborn, Kjell
    Uppsala universitet.
    Distribution and synchronisation of engineering information using active database technology2005In: Advances in Engineering Software, ISSN 0965-9978, E-ISSN 1873-5339, Vol. 36, no 11-12, p. 720-728Article in journal (Refereed)
    Abstract [en]

    Today, work collaboration is normal practice in developing modern products. Engineering collaborative work involves a number of team members that need to share and exchange design ideas while working with engineering analysis tools such as mechanical computer aided engineering systems. This work presents the M-Sync prototype system that uses an active database approach to enable exchange of engineering information among distributed team members in a timely manner. The distributed data is fully accessible by the local member and is automatically synchronised between different places using a database management system that support event-condition-action (ECA) database rules. Only updates introduced at one location are distributed to other locations, thereby minimizing information transfer and enhancing performance. Members working at different locations can therefore work in a peer-to-peer (P2P) manner and interactively manipulate the same set of information at the same time.

  • 5. Haoxue, Ma
    et al.
    Orsborn, Kjell
    Uppsala universitet.
    Integration of multibody system analysis information based on database technology2002In: Proceedings of the Third International Conference on Engineering Computational Technology: ECT2002 / [ed] B.H.V. Topping ; Z. Bitnar, Stirling: Civil-Comp Press , 2002, p. 123-124Conference paper (Refereed)
    Abstract [en]

    Computer-based tools and methods have become important means of design, simulation and manufacturing in the product development process. Today, many companies function as global enterprises where practically all work is distributed and coordinated worldwide. Consequently large amounts of heterogeneous and distributed engineering data are produced. Furthermore, Computer-based analysis activities within different analysis domains normally need to combine, exchange, and share relevant product data to each other. Product development thus requires product information to be communicated between computer-based tools in such a globally distributed and heterogeneous computing environment. This paper presents how modem database technology can be used to facilitate the integration of product data, specifically information concerning multibody system (MBS) analysis. Through the examples provided, this paper shows how to use multi-database facilities to integrate MBS data between different engineering analysis tools through network; How to access MBS data by using a CORBA-based client-server model. Furthermore, it shows how to use database query language to pose queries to retrieve MBS information that is stored in the embedded database.

  • 6.
    Haoxue, Ma
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Risch, Tore
    Uppsala universitet.
    A database approach for information communication in a peer-to-peer collaborative CAD environment2007In: Software, practice & experience, ISSN 0038-0644, E-ISSN 1097-024X, Vol. 37, no 11, p. 1193-1213Article in journal (Refereed)
    Abstract [en]

    Timely and efficient information communication is a key factor in ensuring successful collaboration in engineering collaborative design. This work proposes a database approach to support information communication between distributed and autonomous CAD systems. It provides the designer with an easy and flexible way, a project-based propagation meta-table, to specify what parts of a CAD information model should be communicated to other collaborating designers. A CAD peer manager, containing a peer database that stores information to be exchanged with the other collaborators, wraps each participating CAD system. The peer manager identifies changes made to the CAD model by using stored procedures and active rules in the peer database that are automatically generated based on the propagation meta-table. The identified updates are propagated in a timely manner to other peers via inter-database message passing, thereby minimizing the volume of necessary information to be exchanged. Furthermore, remote peer designers can flexibly incorporate, filter, or delete received updates by using a propagation control interface, which is also used to issue user's commands to download the data from the CAD system to the peer database and lookup the received messages in the peer database. The approach is applicable on any CAD system having a CORBA interface and can also be applied to other kinds of object-oriented interfaces.

  • 7.
    Isaksson, Ola
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Innovation and Design.
    Jeppsson, Peter
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Fuxin, Freddy
    Volvo Trucks.
    Johansson, Henrik
    Johansson, Per
    Linköping University.
    Katchaounov, Timour
    Uppsala University.
    Lindeblad, Mats
    VAC.
    Haoxue, Ma
    Malmqvist, Johan
    Chalmers University of Technology.
    Mesihovic, Samir
    Chalmers University of Technology.
    Sutinen, Krister
    Linköping University.
    Svensson, Daniel
    Chalmers University of Technology.
    Törlind, Peter
    Trends in product modelling: an ENDREA perspective2000In: Proceedings / Produktmodeller 2000, Linköping: Linköping universitet , 2000Conference paper (Refereed)
    Abstract [en]

    The success of engineering companies is highly dependent on how well product information is managed, engineered and communicated. From marketing through development to after sales activities, data needs to be accessible and used in the best way. Today, geographical distance, the need for close co-operation and data complexity are all natural parts of the working environment. Product modelling techniques are continuously evolving with new requirements and opportunities emerging daily. This paper will outline and discuss some of these trends, and at the same time present some of the areas where research is being carried out within projects in the Product Model Cluster in the national graduate school - The Swedish Engineering Design Research and Education Agenda (ENDREA).

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