(English below)— La fabrication numérique est une branche récente des sciences numériques qui utilise les outils de l’informatique graphique pour la conception de matériaux et de formes (actuation optimale, assemblage), en utilisant la fabrication numérique (impression 3D, découpe laser, prototypage rapide). La Mécanique se préoccupe depuis longtemps de prédire les propriétés macroscopiques d’un matériau à partir de sa micro-structure interne, et de l’optimiser. Les physiciens se tournent de plus en plus vers l’étude de propriétés exotiques de matériaux architecturés et actifs.

Ces communautés travaillent donc maintenant sur des sujets très similaires, en profitant de la possibilité de controler la micro-structure des matériaux grace à la fabrication numérique. Mais les outils sont très différents, et avec très peu de contact entre les communautés. Nous sommes donc convaincus que des collaborations entre communautés pourront maintenant être très profitables, comme on a pu le voir lors de l’édition 2019 de graphyz (édition 2022 en préparation)

Cet atelier a eu pour but de mettre en contact et de faire connaitre les scientifiques de ces communautés, de déclencher discussions informelles, et d’imaginer de futures collaborations. Toutes les contributions sont bienvenues, et en particulier de jeunes chercheurs.

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Computational Fabrication is a recent branch of Computer Science interested in applying the tools of Computer Graphics to the design of materials and shapes ( together with shape optimization, optimal actuation, assembly, etc…), using digital fabrication techniques (3D printing, laser cutting, etc…). In Mechanics, there is a traditional effort to extract material properties from its internal micro-structure, and to optimize it. Physicists are more and more interested in the exotic properties of architected and active materials.

These communities are now working on very similar objects, taking advantage of the possiblity of controling the microstructure of materials through digital manufacturing. But they work with very different techniques and belong to different cultures. We are convinced that the time is ripe for fruitful interdisciplinary collaborations, as evidenced for example in the 2019 graphyz workshop in (and wait for the 2022 edition…)

This workshop was intended to trigger informal discussions, assessing the mutual benefits of exchanging ideas and mutual learning.

Conférences/ Keynote

• Melina Skouras (INRIA-Anima) What is Computer Fabrication? Computer Graphics?
• Gregoire Allaire (CMAP) A brief review of structural optimization: homogenization versus level set methods.
• Jonàs Martínez (MFX) Stochastic metamaterials for additive manufacturing

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Programme (including slides of presentations)

• 9h25 Welcome
• 9h30 Keynote : M.Skouras What is Computer Graphics? and Computational Fabrication? (slides)
• 10h05 F. Agnelli (replaced by Andrei Constantinescu) Computational design of shape shifting panels using a level set topology optimisation.
• 10h20 A. De Simone Shape programming inspired by the movement of euglenids
• 10h35-11h05 Pause (discussions wonder.me)
• 11h05 Keynote : G.Allaire A brief review of structural optimization: homogenization versus level set methods. (slides)
• 11h40 Z. Hooshmand-Ahoor Voronoi-type porous material obtained by nonlinear elasticity (slides)
• 11h55 T.Cheng 4D-printed motion mechanisms inspired by Dioscorea bulbifera (slides) (info: https://www.icd.uni-stuttgart.de/team/Cheng/ )
• 12h10-13h30 Lunch
• 13h30 Keynote : J.Martinez Stochastic metamaterials for additive manufacturing (slides) (publications :  https://mfx.loria.fr/publications/)
• 14h05 J.Bleyer Topology optimization for designing structures with optimal load-bearing capacity. (slides)
• 14h20 A.Ghorbani Inverted and Programmable Poynting effect in metamaterials
• 14h35-15h15 Pause (discussions wonder.me)
• 15h15 V.Romero Physical Validation for Computer Graphics
• 15h30 D.Jourdan Printing-on-Fabric Meta-Material for Self-Shaping Architectural Models.
• 15h45 P. Baconnier Collective actuation in active solids: toward the design of autonomous functional materials
• 16h00 T. Chen Bistable Auxetic Surface Structures (slides)
• 16h15 End of workshop.

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Where / When ?

The workshop took place on June 22 2021, entirely online (Zoom + Wonder.me). Registered participants received by e-mail the links to attend the workshop (Monday 21st). contact mephy@pmmh.espci.fr in case of problem

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Organisation / Organizing Commitee

Kostas Danas (LMS) / Florence Bertails-Descoubes (INRIA Elan) / Benoit Roman (PMMH) / Melina Skouras (INRIA Anima)

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Inscription / Registration

Envoyer un message à mephy@pmmh.espci.fr avec nom,prénom,labo, titre de présentation (si vous souhaitez présenter). // Send a message to mephy@pmmh.espci.fr with your name, first name, lab, title of a presentation (if you wish).

NB : We strongly welcome presentations of ongoing work by young researchers (PhD/Postdoc)

Déjà inscrits / Already registered

73 personnes inscrites. (entre 45 et 55 personnes connectées en continu)

NOM	Prénom	Labo	Titre de présentation	email
Abbasi	Arefeh	EPFL		ok
Allaire	Grégoire	CMAP	Keynote – A brief review of structural optimization: homogenization versus level set methods.	ok
Agnelli	Filippo	LMS	Computational design of shape shifting panels using a level set topology optimisation	ok
Audoly	Basile	LMS		ok
Auffray	Nicolas	LMSME		ok
Baconnier	Paul	Gulliver – ESPCI	Collective actuation in active solids: toward the design of autonomous functional materials	ok
Bertails-Descoubes	Florence	Inria-Elan		ok
Bico	José	PMMH		ok
Blal	Nawfal	LAMCOS		ok
Bleyer	Jérémy	Navier-ENPC	Topology optimization for designing structures with optimal load-bearing capacity	ok
Bodelot	laurence	LMS		ok
Bonamy	Daniel	SPEC, CEA Saclay		ok
Brach	Stella			ok
Chen	Tian	Geometric Computing lab-EPFL	Bistable Auxetic Surface Structures	ok
Cheng	Tiffany	ICD Stuttgart	4D-printed motion mechanisms inspired by Dioscorea bulbifera	ok
Chopin	Julien	Instituto de Física, Brasil		ok
Comoretto	Alberto	AMOLF		ok
Constantinescu	Andrei	LMS	replacing Filippo Agneli	ok
Coutrix	Céline	LIG		ok
Danas	Kostas	LMS		ok
Dauchot	Olivier	ESPCI		ok
De Simone	Antonio	BioRobotics Lab,Sant’anna, Pisa	Shape programming inspired by the movement of euglenids	ok
Derveni	Fani	EPFL		ok
Di Giusto	Davide	IUSTI		ok
Diani	Julie	LMS		ok
Domino	Lucie	Inst. Physics, U. Amsterdam		ok
Dong	Yan	EPFL		ok
Durant	Baptiste	ENPC		ok
Dureisseix	David	LAMCOS		ok
Fan	Zhuzhi	LIG		ok
Fares	Nicolas	ENS Lyon		ok
Fazal	Rayan	U. Paris-Saclay		ok
Férec	Julien	IRDL		ok
Fernandez-Mouron	Louis-Henri			ok
Finel	Alphonse	Laboratoire d’Etude des Microstructures		ok
Giordano	Stefano	IEMN		ok
Ghorbani	Aref	Wageningen U.	Inverted and Programmable Poynting effect in metamaterials	ok
Grandgeorge	Paul	EPFL	Flexible filaments in frictional contact	ok
Guehl	Pascal	ICube		ok
Hooshmand-Ahoor	Zahra	LMS	Voronoi-type porous material obtained by nonlinear elasticity	ok
Job	Stephane	QUARTZ-ISM Paris		ok
Jourdan	David	Inria-Graphdeco	Printing-on-Fabric Meta-Material for Self-Shaping Architectural Models.	ok
Kwakernaak	Lennard	LION & AMOLF		ok
Lazarus	Véronique	IMSIA		ok
le-Duigou	Antoine	IRDL		ok
Lebée	Arthur	Navier-ENPC		ok
Lestringant	Claire	Cambridge U.		ok
Ly	Mickaël	INRIA/ELAN		ok
Marthelot	Joel	IUSTI		ok
Martinez	Jonas	Inria MFX	Keynote Stochastic metamaterials for additive manufacturing	ok
Montiel	Antoine	Sphynx, CEA		ok
Mosser	Loïc	ICube		ok
Mourad	Leyla	Navier-ENPC		ok
Nguyen	Thuy	SPHYNX/SPEC/CEA Saclay		ok
Overvelde	Bas	AMOLF		ok
Pauly	Mark	Geometric Computing lab-EPFL		ok
Pawar	Ajinkya	IRDL		ok
Poincloux	Samuel	EPFL		ok
Reis	Pedro	EPFL		ok
Renaud	Pierre	ICube		ok
Reyssat	Etienne	PMMH		ok
Roman	Benoît	PMMH		ok
Romero	Victor	INRIA Elan	Physical Validation for Computer Graphics	ok
Salsby	Barney	U. Cambridge		ok
Samat	Sergio	Navier-ENPC		ok
Scheibert	Julien	LTDS		ok
Schomaker	Mannus	AMOLF		ok
Skouras	Mélina	Inria-Anima	Keynote – What is Computer Graphics? Computational Fabrication?	ok
Tanguy	Anne	LAMCOS		ok
Tarantino	Gabriella	UPSAY		ok
Xenos	Sokratis	LMS/UTH		ok
Ye	Yang	LMS		ok
Zara	Florence	LIRIS		ok