Intelligent feature based resource selection and process planning

Lien vers la version éditeur: https://www.inderscience.com/books/index.php?action=record&rec_id=755&chapNum=3&journalID=1022&year=2010This paper presents an intelligent knowledge-based integrated manufacturing system using the STEP feature-based modeling and rule based intelligent techniques to generate suitable process plans for prismatic parts. The system carries out several stages of process planning, such as identification of the pairs of feature/tool that satisfy the required conditions, generation of the possible process plans from identified tools/machine pairs, and selection of the most interesting process plans considering the economical or timing indicators. The suitable processes plans are selected according to the acceptable range of quality, time and cost factors. Each process plan is represented in the tree format by the information items corresponding to their CNC Machine, required tools characteristics, times (machining, setup, preparatory) and the required machining sequences. The process simulation module is provided to demonstrate the different sequences of machining. After selection of suitable process plan, the G-code language used by CNC machines is generated automatically. This approach is validated through a case

Intelligent feature based resource selection and process planning

Lien vers la version éditeur: https://www.inderscience.com/books/index.php?action=record&rec_id=755&chapNum=3&journalID=1022&year=2010This paper presents an intelligent knowledge-based integrated manufacturing system using the STEP feature-based modeling and rule based intelligent techniques to generate suitable process plans for prismatic parts. The system carries out several stages of process planning, such as identification of the pairs of feature/tool that satisfy the required conditions, generation of the possible process plans from identified tools/machine pairs, and selection of the most interesting process plans considering the economical or timing indicators. The suitable processes plans are selected according to the acceptable range of quality, time and cost factors. Each process plan is represented in the tree format by the information items corresponding to their CNC Machine, required tools characteristics, times (machining, setup, preparatory) and the required machining sequences. The process simulation module is provided to demonstrate the different sequences of machining. After selection of suitable process plan, the G-code language used by CNC machines is generated automatically. This approach is validated through a case

Conceptual Model for the Integration of PRONTO with ISO Standard 15926

In this paper a conceptual model based on the ISO 15926 standard is proposed in order to extend and make explicit the representation of product variants given by PRONTO. This extension will allow introducing the product model in a collaborative environment where information systems are able to exchange information with other products systems. Interoperability of systems tends to increase the consistency of models, due to they may have several interpretations. Therefore, the proposal defines new elements and adapts these to the data model of the standard, for a complete concept mapping of PRONTO. Furthermore, changes in the product information are represented in time, through 4D approach.Fil: Sonzini, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; ArgentinaFil: Vegetti, Maria Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; ArgentinaFil: Leone, Horacio Pascual. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo y Diseño. Universidad Tecnológica Nacional. Facultad Regional Santa Fe. Instituto de Desarrollo y Diseño; Argentin

Modelo conceptual para la integración de PRONTO con el estándar ISO 15926

En el presente trabajo se propone un modelo conceptual basado en el estándar ISO 15926, con el fin de extenderlo y hacer explícita la representación de variantes de productos propuestos por PRONTO. Esta extensión permitirá introducir el modelo de producto en un entorno colaborativo, donde los sistemas de información son capaces de intercambiar información de productos con otros sistemas. La interoperabilidad de sistemas tiende a aumentar la consistencia de modelos ante la diversidad de interpretaciones. Por ello, la propuesta introduce nuevos elementos al modelo de datos del estándar, para tener un mapeo completo con los conceptos de PRONTO. Además, se representa en el tiempo los cambios producidos en la información de producto, a través del enfoque 4D.Sociedad Argentina de Informática e Investigación Operativ

Translating Building Information Modeling to Building Energy Modeling Using Model View Definition

This paper presents a new approach to translate between Building Information Modeling (BIM) and Building Energy Modeling (BEM) that uses Modelica, an object-oriented declarative, equation-based simulation environment. The approach (BIM2BEM) has been developed using a data modeling method to enable seamless model translations of building geometry, materials, and topology. Using data modeling, we created a Model View Definition (MVD) consisting of a process model and a class diagram. The process model demonstrates object-mapping between BIM and Modelica-based BEM (ModelicaBEM) and facilitates the definition of required information during model translations. The class diagram represents the information and object relationships to produce a class package intermediate between the BIM and BEM. The implementation of the intermediate class package enables system interface (Revit2Modelica) development for automatic BIM data translation into ModelicaBEM. In order to demonstrate and validate our approach, simulation result comparisons have been conducted via three test cases using (1) the BIM-based Modelica models generated from Revit2Modelica and (2) BEM models manually created using LBNL Modelica Buildings library. Our implementation shows that BIM2BEM (1) enables BIM models to be translated into ModelicaBEM models, (2) enables system interface development based on the MVD for thermal simulation, and (3) facilitates the reuse of original BIM data into building energy simulation without an import/export process

Metodologia para suporte da colaboração na indústria AEC baseada em BIM e em interoperabilidade

Congresso Construção 2012 - 4º Congresso Nacional/18, 19 e 20 DezembroO Building Information Modelling (BIM) apresenta-se como metodologia para o desenvolvimento de projectos e gestão de empreendimentos na indústria da Arquitectura, Engenharia e Construção (AEC). A utilização da metodologia BIM na indústria AEC tem como objectivos aumentar a produtividade, eficiência, qualidade de construção, e simultaneamente reduzir custos ao longo do ciclo de vida dos empreendimentos. Para tal, há que garantir a interoperabilidade entre as TIC utilizadas no sector, não só ao nível de dados, mas também ao nível dos processos de negócio internos dos vários intervenientes do sector AEC, bem como nas suas relações de colaboração com entidades externas. Neste estudo é proposta uma metodologia para servir de base à colaboração entre os vários intervenientes da indústria AEC, baseada nos princípios de referência de interoperabilidade aos níveis de processos, serviços e dados, assegurando a representação da colaboração em TIC baseadas em BIM. Para este efeito são analisadas várias metodologias para a modelação de processos colaborativos suportados em dados de produto – ISO 10303 (STEP), GTPPM, IDM, e CBP – sendo proposto um método para suportar a colaboração baseado nesta análise. É efectuada uma aplicação do método proposto à representação da colaboração no contexto da determinação de quantidades e análise de custos durante a fase de coordenação de propostas. Através da realização deste estudo conclui-se que o método proposto pode ser aplicado em diversos contextos durante o ciclo de vida de empreendimentos. O método proposto pode ser aplicado a formas contratuais que variam no grau de colaboração entre intervenientes da indústria. As capacidades de abstracção na definição e implementação de processos colaborativos constituem uma importante contribuição para a protecção da propriedade intelectual dos intervenientes