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Bilek J, Hartmann D

Development of an agent-based workbench supporting collaborative structural design

Abstract: This paper presents an approach towards an adaptive, expandable, decentralized and flexible workbench supporting complex structural design processes using multiagent systems technology. Primarily, this novel workbench aims at assisting design experts according to their specific tasks during a project work and furthermore detecting typical deficiencies and conflicts that may occur in collaboration, cooperation and coordination between the various structural designers. The workbench consists of a set of software agents, that are designed and modeled to integrate typical organizational characteristics of a project work, engineering software and data structures in terms of product models. According to the analysis of structural design processes a theoretical concept of three agent-based submodels is suggested: i) the agent-based collaboration model, ii) the agent-based engineering software integration model and iii) the agent-based product model. In this paper we focus on the agent-based collaboration model. The three models are connected by an agent-based process model. The fundamental solution concepts of this approach are to be substantiated by analyzing the design process of an arched bridge, already erected, as a reference.

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Permission to reproduce these papers has been graciously provided by the University of Auckland. The assistance of the editor who provided the full texts and the structured metadata, Dr. Robert Amor, is gratefully appreciated.


Caty Werey, Jean Philippe Torterotot, Delta Sousa e Silva, Axel König, Alvaro Pereira, Marielle Montginoul

Rehabilitation Of Sewer Networks - Addressing Socio-Economic Impacts In The Care-S Project

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Series: w78:2006 (browse)
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M Weise & P Katranuschkov

Supporting State-based Transactions in Collaborative Product Modelling Environments

Abstract: The up to date state and the consistency of shared building model data are of utmost importance for the achievement of efficient model-based collaborative work. However, in engineering design these are not easy tasks. Design activities are typically carried out in long transactions that are characterized by the following three subtasks: check-out of the needed design data into a private workspace, making design changes within the private workspace, and check-in of a new model state into the shared model repository to make changes and decisions visible to the other designers. As a result of various existing semantic interoperability problems, in the new model state both actual design changes and data loss have to be considered that cannot be easily distinguished. To help tackle these problems we suggest a delta-based versioning approach whose essence is in storing design changes instead of complete design states. This approach is then used as basis to support the three data processing stages of a design step within a collaborative work environment, namely (1) creation of the needed and manageable model subset by removing all irrelevant design data, (2) storing the design changes, and (3) restoring the removed data by an ""undo"" operation of the first step. In the paper we present the used semantics for describing design changes, their transformation to deltas and the scope and limits of the suggested undo operation. At the end we provide an example of the use of the suggested approach with the industry standard IFC model and discuss its potential and needed further research.""

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Full text: content.pdf (623,331 bytes) (available to registered users only)

Series: w78:2005 (browse)
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Permission to reproduce these papers has been graciously provided by the Technische Universität Dresden.


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