Ingénierie assistée par ordinateur

Résumé

L'ingénierie assistée par ordinateur ou IAO (en anglais computer-aided engineering ou CAE), également qualifiée dingénierie numérique, regroupe l'ensemble des moyens numériques et logiciels habituellement utilisés par les ingénieurs et techniciens des bureaux d'études pour concevoir, simuler et valider de nouveaux produits et processus industriels. L'aboutissement de la phase d'ingénierie numérique d'un produit est sa maquette numérique. Font classiquement partie de la catégorie des outils d'ingénierie numérique :

les logiciels de CAO (conception assistée par ordinateur),
les logiciels de simulation des comportements (statiques, cinématiques, dynamiques, rhéologiques…),
les logiciels de FAO (fabrication assistée par ordinateur),
les SGDT (système de gestion des données techniques),
les systèmes de GCVP (product lifecycle management),
les SGBC (système de gestion de bases de connaissance),
les systèmes de KLM (knowledge lifecycle management),
les environneme

Source officielle

https://fr.wikipedia.org/wiki/Ing%C3%A9nierie_assist%C3%A9e_par_ordinateur

À propos de ce résultat

Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.

Publications associées (11)

Publications associées

Chargement

Personnes associées (1)

Personnes associées

Chargement

Unités associées (2)

Unités associées

Chargement

Concepts associés (12)

Concepts associés

Chargement

Cours associés (2)

L'objectif de ce cours est d'apprendre à réaliser de manière rigoureuse et critique des analyses par éléments finis de problèmes concrets en mécanique des solides à l'aide d'un logiciel CAE moderne.

Students will be exposed to basic computer-aided manufacturing (CAM) modeling concepts, basic mathematical simulation, verification and optimization algorithms and methodologies and their applications. The students will practice their knowledge by doing projects with modern CAM software.

Cours associés

Chargement

Séances de cours associées

Chargement

Optimal selection of cutting parameters in multi-tool milling operations using a genetic algorithm

Daniel Brand, Jitender Kumar Rai, Mohammed Slama, Paul Xirouchakis

In the milling of large monolithic structural components for aircraft, 70-80% of the total cut volume is removed using high-speed roughing operations. In order to achieve the economic objective (i.e. optimal part quality in minimal machining time) of this process, it is necessary to determine the optimal cutting conditions while respecting the multiple constraints (functional and technological) imposed by the machine, the tool and the part geometry. This work presents a physical model called GA-MPO (genetic algorithm based milling parameter optimisation system) for the prediction of the optimal cutting parameters (namely, axial depth of cut (a(p)), radial immersion (a(e)), feed rate (f(t)) and spindle speed (n)) in the multi-tool milling of prismatic parts. By submitting a preliminary milling process plan (i.e. CL data file) generated by CAM (computer-aided manufacturing) software, the developed system provides an optimal combination of process parameters (for each machining feature), respecting the machine-tool-part functional/technological constraints. The obtained prediction accuracy and enhanced functional capabilities of the developed system demonstrate its improved performance over other models available in the literature.

Taylor & Francis2011

Chargement

A framework to automate the design of digitally-fabricated timber plate structures

Henry V. Burton, Aryan Rezaei Rad, Nicolas Henry P Rogeau, Petras Vestartas, Yves Weinand

The current study uses knowledge from digital architecture, computer science, engineering informatics, and structural engineering to formulate an algorithmic framework for integrated Computer-Aided Design (CAD) and Computer-Aided Engineering (CAE) of Integrally-Attached Timber Plate (IATP) structures. The algorithm is designed to take the CAD 3D geometry of an IATP structure as input and automates the construction and analysis of the corresponding CAE model using a macroscopic element, which is an alternative to continuum Finite Element (FE) models. Each component of the macro model is assigned a unique tag that is linked to the relevant geometric and structural parameters. The CAE model integrity is maintained through the use of the common data model (CDM) concept and object-oriented programming. The relevant algorithms are implemented in Rhinoceros 3D using RhinoCommon, a .NET software development kit. Once the CAE macro model is generated, it is introduced to the OpenSees computational platform for structural analysis. The algorithmic framework is demonstrated using two case structures: a prefabricated timber beam with standard geometry and a free-form timber plate arch. The results are verified with measurements from physical experiments and FE models, where the time needed to convert thousands of CAD assemblies to the corresponding CAE models for response simulation is considerably reduced.

2020

Chargement

Case-Study on the Creep Behavior of Interconnected Timber Elements using Wood-Wood Connections

Jean-François Bocquet, Julien Gamerro, Martin Thomas Nakad, Yves Weinand

With the increasing use of automation and computer-aided manufacturing in timber construction, a standardized timber construction system using digitally produced wood-wood connections has recently been developed for basic building components. Its structural performance has already been characterized with static bending tests in a previous case-study. Based on this work, the creep behavior of such a construction system is investigated in this paper. An experimental test was conducted in outdoor conditions to perform a simple quantitative and comparative study with the creep-reduction factor k de f for wood-wood connections described in the Eurocode 5 standard. A large-scale specimen was placed on two supports under a ventilated shelter and exposed to natural variations of humidity and temperature over a total period of approximately 400 days. The results were reassuring for the long-term performance of this type of construction system. Creep due to the connections accounted for 25% of the final displacement. In addition, the existing guidelines concerning the factor k de f for wood-wood connections were conservative for this specific configuration and could be optimized with future investigations on this topic.

EPFL2021

Chargement