Collaborative product development in CAD and CAPP, an approach based on communication due to constraint conflicts and user initiative

O.W. Salomons, J.M. Kuipers, J. van de Graaff, F. van Slooten, Frederikus J.A.M. van Houten, H.J.J. Kals

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This paper addresses collaborative product development, focusing on computer support of collaboration between users of CAD systems alone, between users of CAPP systems alone and between users of both CAD and CAPP systems. Computer support of collaborative product development may enhance informal information exchange. Apart from formal information exchange between CAD and CAPP systems, informal information exchange is necessary in achieving the goals of Concurrent Engineering. Collaboration can be started in a number of ways; as a result of one or more conflicts in constraints belonging to several users or voluntarily on the initiative of a user. Both these ways of starting collaboration should be supported. Besides collaboration, important related issues are engineering data management, handling of multiple views, design histories and a facility of supporting project management. A prototype implementation restricted to a re--design support oriented CAD system supporting both conflict based and voluntary communication is presented. The re-design support system currently supports several constraint types. The present implementation uses parameter constraints in the support of conflict based communication. A parameter constraint solver based on the use of simulated annealing is employed.
Original languageEnglish
Title of host publicationProceedings IFIP WG5.2 workshop on Knowledge-intensive CAD-1
Place of PublicationHelsinki
Publication statusPublished - 26 Sep 1995
EventIFIP WG5.2 Workshop on Knowledge-Intensive CAD-1 - Espoo, Finland
Duration: 26 Sep 199529 Sep 1995


ConferenceIFIP WG5.2 Workshop on Knowledge-Intensive CAD-1
Other26-29 September 1995


  • METIS-145652
  • multi–user systems
  • Concurrent engineering
  • Features
  • CAPP
  • CAD
  • Collaborative design
  • Constraints
  • IR-85185


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