avis de soutenance

UNIVERSITE DE TECHNOLOGIE DE BELFORT-MONTBELIARD
Ecole Doctorale Sciences Physiques pour l'Ingénieur et Microtechniques
IRTES EA7274
AVIS DE SOUTENANCE
Mademoiselle Elise GRUHIER
Candidate au DOCTORAT Mécanique
à l'UNIVERSITE DE TECHNOLOGIE DE BELFORT-MONTBELIARD
Soutiendra sa thèse
Le vendredi 04 décembre 2015 à 10h30
Amphithéâtre P228 - SEVENANS
Sur le sujet suivant :
« Spatiotemporal description and modeling of mechanical product and its
assembly sequence based on mereotopology : Theory, model ans approach
»
Le jury est composé de :
Monsieur Alain BERNARD, PROFESSEUR DES UNIVERSITES
ECOLE CENTRALE NANTES, Rapporteur
Monsieur Philippe VERON, PROFESSEUR DES UNIVERSITES
ENS ARTS ET METIERS CER AIX ENS ARTS ET METIERS PARIS, Rapporteur
Monsieur Said ABBOUDI, PROFESSEUR DES UNIVERSITES
UNIV TECHN BELFORT MONTBELIARD
Monsieur Michel TOLLENAERE, PROFESSEUR DES UNIVERSITES
INST POLYTECHNIQUE GRENOBLE GRENOBLE
Monsieur Kyoung-Yun KIM, PROFESSEUR DES UNIVERSITES ASSOCIE-MT
WAYNE STATE UNIVERSITY
Monsieur Samuel GOMES, PROFESSEUR DES UNIVERSITES
UNIV TECHN BELFORT MONTBELIARD
Monsieur Imre HORVATH, PROFESSEUR DES UNIVERSITES
UNIVERSITE DE DELFT
Monsieur Frederic DEMOLY, MAITRE DE CONFERENCES DES UNIVERSITES
UNIV TECHN BELFORT MONTBELIARD
Résumé
The major goal of this research is to describe product evolution in the three dimensions (i.e. spatial, temporal and
spatiotemporal). In the current industrial context, product models are only considered from a purely spatial point of
view during the design stage and from a purely temporal point of view during the assembly stage. The lack of link
between product and process leads to misunderstanding in engineering definition and causes wrong design
interpretation. However, the product undergoes changes throughout the design and assembly phases. The dynamic
aspect of design activities requires linking both dimensions in order to be able to represent product evolution and
have consistent information. As such, spatiotemporal dimension (i.e. linking space and time) needs to be added and
relationships between product modelling and assembly sequences need to be particularly studied.
This PhD thesis in mechanical design draws inspiration from several domains such as mathematics, geographic
information systems and philosophy. Here the product is considered from a perdurantist point of view. Perdurantism
regards the object as being composed of temporal slices and always keeping the same identity whatever changes
undergone. Based on this statement, this PhD thesis introduces a novel product-process description so as to ensure
product architect's and designer's understanding of design intents at the early design stages. In order to achieve this
objective, a mereotopological theory, enabling the product description as it is perceived in the real world, has been
developed and implemented in an ontology model to be formalized.
The JANUS theory qualitatively describes product evolution over time in the context of AOD, integrating assembly
sequence planning in the early product design stages. The theory enables the formal relationships description of
product-process design information and knowledge. The proposed efforts aim at providing a concrete basis for
describing changes of spatial entities (i.e. product parts) and their relationships over time and space. This regionbased theory links together spatial, temporal and spatiotemporal dimensions, therefore leading to a perdurantist
philosophy in product design.
Then, PRONOIA2 - a formal ontology based on the previous mereotopological theory - is developed. Assembly
information is accessible and exploitable by information management systems and computer-aided X tools in order
to support product architects and designer's activities. Indeed product design information and knowledge as well as
the related assembly sequence require a semantic and logical foundation in order to be managed consistently and
processed proactively.
Based on JANUS theory and PRONOIA2 ontology, the MERCURY approach enables associating spatial information
(managed by PDM) and temporal information (managed by MPM) through spatiotemporal mereotopological
relationships. Therefore, new entities are managed through PLM, using ontology and hub system, so as to ensure
proactive engineering and improve product architects' and designers' understanding of product evolution.
Keywords: Product Lifecycle Management, Assembly-Oriented Design, Mereotopology, Product-Process Qualitative
Description, Spatiotemporal, Ontology