In this paper, we describe a teaching and research experiment which has beentaking place in two Faculties of Architecture in Belgium for the last five years. This experiment focuses ondiscovering and exploring new design issues based on digital concepts and aims identifying andcharacterizing the design praxis shifts (mutations) by the digital culture integration. More precisely, thisexperiment aims at having students discovering and exploring design issues in the first stage of virtual(parametric) model elaboration including fabrication possibilities within its own internal logic.
Delvaux, Fréderic, Faculté d'architecture ULg, sponsor, and Unité de Recherches de la Faculté d'Architecture - URA, research center
design framing, experimentation, algorithmic thinking, design and build, Engineering, computing & technology :: Architecture, and Ingénierie, informatique & technologie :: Architecture
As teachers in a Belgian Faculty of Architecture, we present a learning-by-doing workshop experience.It aims to achieve on one hand the design and the building of a prototype of kinetic and adaptive architectural skin and on the other hand to develop a design frame.Using an advanced educational process as a guide line, based on designing / prototyping we discuss what accurate knowledges and specific skills are needed to perform a usable and relevant modeling associated to an appropriate production method.We demonstrate how incorporate complexity into the design space, and develop an accurate help for creative thinking, especially to manage a kinetic architectural object.
Elsen, Catherine, Häggman, Anders, Tomonori, Honda, Yang, Maria C., and The work described in this paper was supported in part by the National Science Foundation under Award CMMI-1130791; by the IK Investment Fund / The League of Finnish American Societies, the Fulbright-Technology Industries of Finland Grant co-funded with the Federation of Finnish Technology Industries, the Finnish Foundation for Technology Promotion, the Finnish Cultural Foundation, the Emil Aaltonen Foundation grant (for Anders Häggman) and by the Belgian American Education Foundation (for Catherine Elsen)., sponsor
Proceedings of the ASME 2012 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (pp. 11). ASME (2012).
sketching, prototyping, best practice, Engineering, computing & technology :: Multidisciplinary, general & others, Ingénierie, informatique & technologie :: Multidisciplinaire, généralités & autres, Engineering, computing & technology :: Mechanical engineering, and Ingénierie, informatique & technologie :: Ingénierie mécanique
Sketching and prototyping of design concepts have long been valued as tools to support productive early stage design. This study investigates previous findings about the use and timing of use of such design tools. This study considers such tools in the context of team design projects. General trends and statistically significant results about “sketchstorming” and prototyping suggest that, in certain constrained contexts, the focus should be on the quality of information rather than on the quantity of information generated, and that prototyping should begin as soon as possible during the design process. Ramifications of these findings are discussed in the context of educating future designers on the efficient use of design tools.
Collette, Jean-Paul, Rochus, Pierre, Peyrou-Lauga, Romain, Pin, Olivier, Nutal, Nicolas, and Crahay, Jean
Proceedings of the 63rd International Astronautical Congress 1-5 Octobre 2012. (2012).
contrôle thermique, PCM, Engineering, computing & technology :: Aerospace & aeronautics engineering, and Ingénierie, informatique & technologie :: Ingénierie aérospatiale
A new concept of Phase Change Materials (PCM) device has recently been developed to improve the thermal control of spacecraft. Two Phase Change Material candidates have been selected after extensive testing of a set of available materials. Special attention has been paid to the hysteresis and ageing. In the design of the container, the thermal expansion of the PCM is a critical parameter that has been taken into consideration by two competing technologies. These designs have been tested: a prototype of PCM heat storage device has been effectivelymanufactured and tested under vacuum environment. 1D and 2D mathematical models have been developed. Conclusions are drawn to promote the use of PCM Heat Storage device in various space missions.
Verlee, Bruno, Dormal, Thierry, Clarinval, Anne-Marie, and Lecomte-Beckers, Jacqueline
Additive manufacturing, Nanoparticle, Engineering, computing & technology :: Materials science & engineering, Ingénierie, informatique & technologie :: Science des matériaux & ingénierie, Engineering, computing & technology :: Mechanical engineering, and Ingénierie, informatique & technologie :: Ingénierie mécanique
In opposition to traditional machining in which part is manufactured by material removal, rapid prototyping techniques allow parts manufacturing by material addition. The part is built layer-by-layer and the sum of all layers creates the part. Currently, several techniques exist. They use different kind of materials (metals, ceramics, polymers) and technologies (laser melting, laser polymerising, 3D-printing, cladding, ...). Some of these techniques can deal with nanometric particles. In the case of which a near net shape part is built and must be sintered after shaping, the addition of nano-particles can be useful for sintering by increasing specific surface and reactivity of the batch or by improving the properties of the material. An overview about techniques of rapid prototyping allowing the processing of nanomaterials will be discussed. Tests have been done using Optoform process. This process uses a laser to polymerize a paste made of photo-curable resin loaded with powdered material. Nano-particles can be added and stabilized in the paste. In this presentation, the results obtained with both systems Al2O3 + nano Zr02 and SiC + Nano SiC will be discussed.
Engineering, computing & technology :: Aerospace & aeronautics engineering and Ingénierie, informatique & technologie :: Ingénierie aérospatiale
In the frame of a research project, CRIF, KUL and CSL have investigated the possibility to use rapid prototyping and rapid manufacturing (RP/RM) techniques during space instrument development. Rapid prototyping and rapid manufacturing terms gather several techniques with the common baseline that parts are built layer by layer, starting from a CAD model. These techniques imply powder, paste or liquid and are applicable to polymers, ceramics and metals. In a first step, the major advantages of these techniques have been presented to Belgian industries implied in the space sector and, as a result of the discussions, development goals for the project have been identified. Several types of use have also been pointed, from demonstration mock-up to real space hardware. In parallel to technical developments, several case studies and tests have been performed. The case studies have shown that the rapid manufacturing allows complex geometries to be created. A drastic decrease of the number of separate parts and bolted junctions ease the predictability of the mechanical and thermal behaviour and limit the risk of imperfect junction. As a result of the project, a guidelines document has been issued to give as much information as possible on how to perform a space instrument design using the advantages of RP/RM techniques.
Clarinval, Anne-Marie, Carrus, Raoul, Vaneetveld, Grégory, Noben, Jean-Claude, Dormal, Thierry, IWT, sponsor, and Sirris, research center
Optoform, prototyping, photo-curable resins, Engineering, computing & technology :: Materials science & engineering, and Ingénierie, informatique & technologie :: Science des matériaux & ingénierie
Optoform LLC developed a technology to process paste compositions based upon photo-curable resins and fillers. This new process is called by Optoform LLC : the direct composite manufacturing This technique is quite flexible and allows the development of very different materials(polymeric, metallic, ceramic). This paper is an overview of the use limitation and the advantages of materials developed by the CRIF or by other teams. Materials requiring or not a post-processing step have been developed. The limits or restrictions of use of these materials have been studied in order to meet the requirements and needs of various industrial sectors in the United States and in Europe (e.g. car racing, aerospace and aeronautical sectors, tooling industries, …).
da Silva, Maira M, Bruls, Olivier, Swevers, Jan, Desmet, Wim, and Van Brussel, Hendrik
Mechanism & Machine Theory, 44(9), 1733-1745. Pergamon Press - An Imprint of Elsevier Science (2009).
Virtual prototyping, Motion and vibration control, Flexible multibody systems, Model reduction, Engineering, computing & technology :: Mechanical engineering, and Ingénierie, informatique & technologie :: Ingénierie mécanique
This paper discusses the integrated design of mechatronic systems with varying dynamics, such as serial and parallel machine tools. This characteristic affects the machine stability and performance. A computer-aided integrated design methodology is proposed and validated on a pick-and-place robot. It consists of two main steps: (i) the derivation of reduced models from a flexible multibody model and (ii) the systematic robust control design. Eventually, the integrated design of the system, considering both structural and control parameters, can be performed.
This paper considers the optimal design of mechatronic systems with configuration-dependent dynamics. An optimal mechatronic design requires that, among the structural and control parameters, an optimal choice has to be made with respect to design specifications in the different domains. Two main challenges are treated in this paper: the non-convex nature of the optimization problem and the difficulty in modeling serial machines with flexible components and their embedded controllers. The optimization problem is treated using the direct design strategy which considers simultaneously structural and control parameters as variables and adopts non-convex optimization algorithms. Linear time-invariant and gain-scheduling PID controllers are addressed. This methodology is exploited for the multi-objective optimization of a pick-and-place assembly robot with a gripper carried by a variable-length flexible beam. The resulting design tradeoffs between system accuracy and control efforts demonstrate the advantage of an integrated design approach for mechatronic systems with configuration-dependent dynamics.2009 Elsevier Ltd. All rights reserved.