CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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id cf2019_038
authors El-Dabaa, Rana and Sherif Abdelmohsen
year 2019
title HMTM: Hygromorphic-Thermobimetal Composites as a Novel Approach to Enhance Passive Actuation of Adaptive Façades
source Ji-Hyun Lee (Eds.) "Hello, Culture!"  [18th International Conference, CAAD Futures 2019, Proceedings / ISBN 978-89-89453-05-5] Daejeon, Korea, pp. 290-300
summary Typical adaptive facades rely on mechanical actuators that respond to the outdoor climate and regulate its effect on indoor spaces. With the emergence of ubiquitous computing, several studies have independently utilized the latent properties of programmable materials, such as the hygroscopic properties of wood and the difference in expansion coefficient of metals, to passively program material response. Motion stimuli vary for each material however, involving changes in humidity and temperature fluctuation for wood and metals respectively. This paper introduces Hygromorphic-Thermobimetal (HMTM), as a low-tech low-cost passive programmable composite. A series of physical experiments are conducted to deduce design parameters that induce specific actuation mechanisms based on the stimulation of both hygroscopic properties in wood and metal expansion through temperature variation. This allows for an extended implementation of the hygroscopic properties of wood and its actuation configurations in hot arid climates, where variation in temperature, rather than humidity, is more dominant.
keywords Hygroscopic properties of wood, Passive actuation, Thermobimetals, Programmable materials, Adaptive façades
series CAAD Futures
full text file.pdf (867,472 bytes)
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100%; open Abdelmohsen, S., Adriaenssens, S., El-Dabaa, R., Gabriele, S., Olivieri, L. & Teresi, L. (2019) Find in CUMINCAD A multi-physics approach for modeling hygroscopic behavior in wood low-tech architectural adaptive systems , Computer-Aided Design

100%; open Abdelmohsen, S., Massoud, P., El-Dabaa, R., Ibrahim, A. & Mokbel, T. (2018) Find in CUMINCAD A Computational Method for Tracking the Hygroscopic Motion of Wood to develop Adaptive Architectural Skins , Proceedings of the 6th Annual Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe)

100%; open Angel, G. D. & Haritos, G. (2013) Find in CUMINCAD An Immediate Formula for the Radius of Curvature of a Bimetallic Strip , International Journal of Engineering Research and Technology

100%; open Bridgens, B., Holstov, A. & Farmer, G. (2017) Find in CUMINCAD Architectural Application of Wood Based Responsive Building Skins , 12th International Conference on Advanced Building Skins, Bern

100%; open Correa, D. et al. (2015) Find in CUMINCAD 3D-Printed Wood: Programming Hygroscopic Material Transformations , 3D Printing and Additive Manufacturing

100%; open Erb, R. M., Sander, J. S., Grisch, R. & Studart, A. R. (2013) Find in CUMINCAD Self-shaping composites with programmable bioinspired microstructures , Nature Communications

100%; open Forest Products Laboratory (2010) Find in CUMINCAD Wood Handbook: Wood as an Engineering Material , U.S. Dept. of Agriculture, Forest Service

100%; open Fox, M. (2016) Find in CUMINCAD Interactive Architecture: Adaptive World , Princeton Architectural Press

100%; open Holstov, A., Bridgens, B. & Farmer, G. (2015) Find in CUMINCAD Hygromorphic Materials for Sustainable Responsive Architecture , Construction and Building Materials

100%; open Kretzer, M. (2017) Find in CUMINCAD Information materials: Smart Materials for Adaptive Architecture , Springer

100%; open Krieg, O. D., Reichert, S., Menges, A., Correa, D., Rinderspacher, K., Christian, Z. & Schwinn, T. (2014) Find in CUMINCAD HygroSkin – Meteorosensitive Pavilion , Fabricate 2014,

100%; open Körner, A., Born, L., Mader, A., Sachse, R., Saffarian, S., Westermeier, A.S., Poppinga, S., Bischoff, M., Gresser, G.T. & Milwich, M. (2018) Find in CUMINCAD Flectofold—a Biomimetic Compliant Shading Device for Complex Free Form Facades , Smart Materials and Structures

100%; open Menges, A. & Reichert, S. (2012) Find in CUMINCAD Material Capacity: Embedded Responsiveness , Architectural Design

100%; open Reichert, S., Menges, A. & Correa, D. (2015) Find in CUMINCAD Meteorosensitive architecture: Biomimetic Building Skins Based on Materially Embedded and Hygroscopically Enabled Responsiveness , Computer-Aided Design

100%; open Sung, D. (2016) Find in CUMINCAD Smart Geometries for Smart Materials: Taming Thermobimetals to Behave , Journal of Architectural Education

100%; open Vallittu, P. K., Durgesh, B. H., AlKheraif, A. A. & Hjerppe, J. (2018) Find in CUMINCAD From Body-onframe to Unibody Constructions and Designs Mimicking Biological Structures - An Overview , European Journal of Oral Sciences

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