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From Geometry to Motion: inverse modeling of complex mechanical structures

Total Cost €


EC-Contrib. €






 GEM project word cloud

Explore the words cloud of the GEM project. It provides you a very rough idea of what is the project "GEM" about.

stemming    captured    little    contact    image    plates    predict    original    compact    objects    validation    invasive    posed    shared    physically    latest    affordable    shapes    3d    considerable    mathematical    rods    vision    shape    subject    slender    configurations    run    becomes    intricate    shells    creation    realistic    data    mere    boost    experimental    computer    consists    manufacturing    diverse    claim    more    static    formulation    minimal    physical    modeling    capture    graphics    dynamic    reconstruction    strategy    considerably    nonsmooth    inferring    virtual    mechanical    communities    discrete    ease    folded    full    automatic    numerical    leveraged    infer    frictional    geometry    thorough    materials    precisely    physics    dynamics    twined    solving    acquire    featuring    human    models    contrast    doubles    merely    worlds    geometrical    lot    collected    efficient    underlying    cloth    poses    tools    biology    inverse    fast    relying    filaments    structures    with    gem    reveals    capturing    property   

Project "GEM" data sheet

The following table provides information about the project.


Organization address
postcode: 78153

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Project website
 Total cost 1˙498˙570 €
 EC max contribution 1˙498˙570 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-STG
 Funding Scheme ERC-STG
 Starting year 2015
 Duration (year-month-day) from 2015-09-01   to  2021-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

With the considerable advance of automatic image-based capture in Computer Vision and Computer Graphics these latest years, it becomes now affordable to acquire quickly and precisely the full 3D geometry of many mechanical objects featuring intricate shapes. Yet, while more and more geometrical data get collected and shared among the communities, there is currently very little study about how to infer the underlying mechanical properties of the captured objects merely from their geometrical configurations.

The GEM challenge consists in developing a non-invasive method for inferring the mechanical properties of complex objects from a minimal set of geometrical poses, in order to predict their dynamics. In contrast to classical inverse reconstruction methods, my proposal is built upon the claim that 1/ the mere geometrical shape of physical objects reveals a lot about their underlying mechanical properties and 2/ this property can be fully leveraged for a wide range of objects featuring rich geometrical configurations, such as slender structures subject to frictional contact (e.g., folded cloth or twined filaments).

To achieve this goal, we shall develop an original inverse modeling strategy based upon a/ the design of reduced and high-order discrete models for slender mechanical structures including rods, plates and shells, b/ a compact and well-posed mathematical formulation of our nonsmooth inverse problems, both in the static and dynamic cases, c/ the design of robust and efficient numerical tools for solving such complex problems, and d/ a thorough experimental validation of our methods relying on the most recent capturing tools.

In addition to significant advances in fast image-based measurement of diverse mechanical materials stemming from physics, biology, or manufacturing, this research is expected in the long run to ease considerably the design of physically realistic virtual worlds, as well as to boost the creation of dynamic human doubles.


year authors and title journal last update
List of publications.
2016 Florence Bertails-Descoubes
Geometry and Mechanics of fibers: Some numerical models (Invited Talk)
published pages: 1-6, ISSN: , DOI:
Mathematical Progress in Expressive Image Synthesis III 2019-05-29
2016 Alejandro Blumentals, Florence Bertails-Descoubes, Romain Casati
Dynamics of a developable shell with uniform curvatures
published pages: , ISSN: , DOI:
The 4th Joint International Conference on Multibody System Dynamics 2019-05-29
2018 Florence Bertails-Descoubes, Alexandre Derouet-Jourdan, Victor Romero, Arnaud Lazarus
Inverse design of an isotropic suspended Kirchhoff rod: theoretical and numerical results on the uniqueness of the natural shape
published pages: 20170837, ISSN: 1364-5021, DOI: 10.1098/rspa.2017.0837
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science 474/2212 2019-05-29
2018 Jie Li, Gilles Daviet, Rahul Narain, Florence Bertails-Descoubes, Matthew Overby, George E. Brown, Laurence Boissieux
An Implicit Frictional Contact Solver for Adaptive Cloth Simulation
published pages: , ISSN: 0730-0301, DOI:
ACM Transactions on Graphics (Proceedings of the 2018 SIGGRAPH Conference), conditionally accepted 2019-05-29
2017 Florence Bertails-Descoubes
Numerical Modeling of elastic slender structures subject to contact and friction: From dynamic simulation to inverse static design
published pages: , ISSN: , DOI:
Habilitation à Diriger des Recherches 2019-05-29
2016 Romain Casati, Gilles Daviet, Florence Bertails-Descoubes
Inverse Elastic Cloth Design with Contact and Friction
published pages: , ISSN: , DOI:
Inria Research Report 2019-05-29
2017 Alejandro Blumentals
Numerical modelling of thin elastic solids in contact
published pages: , ISSN: , DOI:
PhD Thesis 2019-05-29
2018 Victor Romero, Florence Bertails-Descoubes, Alexandre Derouet-Jourdan, Arnaud Lazarus
Inverse design of a suspended Kirchhoff rod: From theory to practice
published pages: , ISSN: , DOI:
10th European Solid Mechanics Conference 2019-05-29
2018 Mickaël Ly, Romain Casati, Florence Bertails-Descoubes, Mélina Skouras, Laurence Boissieux
Inverse Elastic Shell Design with Contact and Friction
published pages: , ISSN: 0730-0301, DOI:
ACM Transactions on Graphics 2019-04-18

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