<?xml version="1.0" encoding="utf-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:hal="http://hal.archives-ouvertes.fr/" xmlns:gml="http://www.opengis.net/gml/3.3/" xmlns:gmlce="http://www.opengis.net/gml/3.3/ce" version="1.1" xsi:schemaLocation="http://www.tei-c.org/ns/1.0 http://api.archives-ouvertes.fr/documents/aofr-sword.xsd">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>HAL TEI export of hal-03882301</title>
      </titleStmt>
      <publicationStmt>
        <distributor>CCSD</distributor>
        <availability status="restricted">
          <licence target="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 - Universal</licence>
        </availability>
        <date when="2026-05-18T08:36:56+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">The Baya Nest pavilion project: braided pattern optimization for hanging shell structures by dynamic relaxation</title>
            <author role="aut">
              <persName>
                <forename type="first">Marc</forename>
                <surname>Leyral</surname>
              </persName>
              <email type="md5">4d22689b178fe4ea5598a1f845e503d0</email>
              <email type="domain">paris-lavillette.archi.fr</email>
              <idno type="idhal" notation="string">marc-leyral</idno>
              <idno type="idhal" notation="numeric">1197680</idno>
              <idno type="halauthorid" notation="string">2665070-1197680</idno>
              <affiliation ref="#struct-461683"/>
              <affiliation ref="#struct-261638"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Quentin</forename>
                <surname>Chef</surname>
              </persName>
              <idno type="halauthorid">2665071-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Sylvain</forename>
                <surname>Ebode</surname>
              </persName>
              <idno type="halauthorid">2665224-0</idno>
              <affiliation ref="#struct-461683"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Pierre</forename>
                <surname>Guerold</surname>
              </persName>
              <idno type="halauthorid">2665231-0</idno>
            </author>
            <editor role="depositor">
              <persName>
                <forename>Marc</forename>
                <surname>LEYRAL</surname>
              </persName>
              <email type="md5">4d22689b178fe4ea5598a1f845e503d0</email>
              <email type="domain">paris-lavillette.archi.fr</email>
            </editor>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2022-12-02 12:40:23</date>
              <date type="whenModified">2024-12-17 03:36:46</date>
              <date type="whenReleased">2022-12-02 14:40:38</date>
              <date type="whenProduced">2021-08-23</date>
              <date type="whenEndEmbargoed">2022-12-02</date>
              <ref type="file" target="https://hal.science/hal-03882301v1/document">
                <date notBefore="2022-12-02"/>
              </ref>
              <ref type="file" subtype="author" n="1" target="https://hal.science/hal-03882301v1/file/IASS2021%20-%20Baya%20-%20V3.pdf" id="file-3882301-3396350">
                <date notBefore="2022-12-02"/>
              </ref>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="1357074">
                <persName>
                  <forename>Marc</forename>
                  <surname>LEYRAL</surname>
                </persName>
                <email type="md5">4d22689b178fe4ea5598a1f845e503d0</email>
                <email type="domain">paris-lavillette.archi.fr</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-03882301</idno>
            <idno type="halUri">https://hal.science/hal-03882301</idno>
            <idno type="halBibtex">leyral:hal-03882301</idno>
            <idno type="halRefHtml">&lt;i&gt;IASS Annual Symposium 2020/21 - 7th International Conference on Spatial Structures - "Inspiring the Next Generation"&lt;/i&gt;, Aug 2021, Surrey, United Kingdom</idno>
            <idno type="halRef">IASS Annual Symposium 2020/21 - 7th International Conference on Spatial Structures - "Inspiring the Next Generation", Aug 2021, Surrey, United Kingdom</idno>
            <availability status="restricted">
              <licence target="https://about.hal.science/hal-authorisation-v1/">HAL Authorization<ref corresp="#file-3882301-3396350"/></licence>
            </availability>
          </publicationStmt>
          <seriesStmt>
            <idno type="stamp" n="SHS">Sciences de l'Homme et de la Société</idno>
            <idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno>
            <idno type="stamp" n="MAP">UMR 3495 MAP</idno>
            <idno type="stamp" n="AO-ARCHITECTURE">Archives ouvertes en Architecture et aménagement de l'espace</idno>
            <idno type="stamp" n="ARCHITECTURE">Architecture et aménagement de l'espace</idno>
            <idno type="stamp" n="GENIECIVIL">Génie Civil</idno>
            <idno type="stamp" n="HESAM">Hesam</idno>
            <idno type="stamp" n="HESAM-ENSAPLV" corresp="HESAM">Ecole nationale supérieure d’architecture Paris la Villette - Hesam</idno>
            <idno type="stamp" n="ENSAPLV">Ecole nationale supérieure d’architecture Paris la Villette</idno>
            <idno type="stamp" n="UPR-MAP-HIST">Les publications de l'UPR MAP et des structures antérieures</idno>
          </seriesStmt>
          <notesStmt>
            <note type="audience" n="2">International</note>
            <note type="invited" n="0">No</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="1">Yes</note>
            <note type="proceedings" n="0">No</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">The Baya Nest pavilion project: braided pattern optimization for hanging shell structures by dynamic relaxation</title>
                <author role="aut">
                  <persName>
                    <forename type="first">Marc</forename>
                    <surname>Leyral</surname>
                  </persName>
                  <email type="md5">4d22689b178fe4ea5598a1f845e503d0</email>
                  <email type="domain">paris-lavillette.archi.fr</email>
                  <idno type="idhal" notation="string">marc-leyral</idno>
                  <idno type="idhal" notation="numeric">1197680</idno>
                  <idno type="halauthorid" notation="string">2665070-1197680</idno>
                  <affiliation ref="#struct-461683"/>
                  <affiliation ref="#struct-261638"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Quentin</forename>
                    <surname>Chef</surname>
                  </persName>
                  <idno type="halauthorid">2665071-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Sylvain</forename>
                    <surname>Ebode</surname>
                  </persName>
                  <idno type="halauthorid">2665224-0</idno>
                  <affiliation ref="#struct-461683"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Pierre</forename>
                    <surname>Guerold</surname>
                  </persName>
                  <idno type="halauthorid">2665231-0</idno>
                </author>
              </analytic>
              <monogr>
                <meeting>
                  <title>IASS Annual Symposium 2020/21 - 7th International Conference on Spatial Structures - "Inspiring the Next Generation"</title>
                  <date type="start">2021-08-23</date>
                  <settlement>Surrey</settlement>
                  <country key="GB">United Kingdom</country>
                </meeting>
                <imprint/>
              </monogr>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <keywords scheme="author">
                <term xml:lang="en">dynamic relaxation</term>
                <term xml:lang="en">pedagogy</term>
                <term xml:lang="en">grasshopper</term>
                <term xml:lang="en">optimization</term>
                <term xml:lang="en">teaching</term>
                <term xml:lang="en">weaving</term>
                <term xml:lang="en">braiding</term>
                <term xml:lang="en">shell</term>
                <term xml:lang="en">Hanging shell</term>
              </keywords>
              <classCode scheme="halDomain" n="spi.gciv.struct">Engineering Sciences [physics]/Civil Engineering/Structures</classCode>
              <classCode scheme="halDomain" n="info.info-oh">Computer Science [cs]/Other [cs.OH]</classCode>
              <classCode scheme="halDomain" n="shs.archi">Humanities and Social Sciences/Architecture, space management</classCode>
              <classCode scheme="halTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halOldTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halTreeTypology" n="COMM">Conference papers</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>Through the study of the Baya's weaverbird nest, we carried out our research on the braided hanging shells. It is a new experimental structure that is effective in terms of low use of materials. We developed a parametrical dynamic relaxion solution to calculate principal fields of stress on every type of the hanging shell project. Thanks to experimental measurements and another dynamic relaxation algorithm that takes into account bending forces due to the braiding process, we developed a law which define a relation between density and orientation of the stems and the fields of principal stresses on an idealized continuous surface: "each field of stress is related to an optimal braiding". The apparent complexity of this method makes it restricted to researchers and engineers, thus also making it inaccessible to architects. Therefore, we sought to adapt our algorithm, making it accessible and easy to use for architects and practitioners. The goal of this project is to make those concepts understandable for a group of architecture students and to build from scratch the set of necessary tools for the calculation, braiding optimization, designing, and fabrication of a human-scale braided hanging pavilion; allowing us to connect theoretical and practical fields. In order to popularize those notions, we engaged in three different activities: • The development of a complete, generic, open-source and ergonomic algorithm, usable by all, for optimization of braided hanging shell using dynamic relaxation. • The publication in La Villette editions of a collective book that compiles our study and the historical, scientific and conceptual knowledge over this subject in a pedagogic way, co-written with the master cycle students. • The practical application of our study with the construction of a full-scale public pavilion hanging from trees in partnership with the municipality of Paris on the belvedere of the Butte du Chapeau Rouge park (Paris XIX).</p>
            </abstract>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="researchteam" xml:id="struct-461683" status="VALID">
          <idno type="IdRef">161275680</idno>
          <orgName>Architecture, milieu, paysage</orgName>
          <orgName type="acronym">AMP</orgName>
          <desc>
            <address>
              <addrLine>Laboratoires de recherche de l’École nationale supérieure d’architecture de Paris La Villette (ENSAPLV)  21-23 rue des Ardennes, 75019 Paris</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://amp.scribnet.org/</ref>
          </desc>
          <listRelation>
            <relation active="#struct-74121" type="direct"/>
            <relation active="#struct-302628" type="indirect"/>
          </listRelation>
        </org>
        <org type="laboratory" xml:id="struct-261638" status="OLD">
          <orgName>Modèles et simulations pour l'Architecture et le Patrimoine</orgName>
          <orgName type="acronym">MAP</orgName>
          <date type="start">2012-01-01</date>
          <date type="end">2023-12-31</date>
          <desc>
            <address>
              <addrLine>Campus CNRS, Bâtiment Z’, 31 chemin Joseph Aiguier, 13402 MARSEILLE cedex 20</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.map.cnrs.fr/</ref>
          </desc>
          <listRelation>
            <relation name="UMR3495" active="#struct-441569" type="direct"/>
            <relation active="#struct-542949" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-74121" status="VALID">
          <idno type="ROR">https://ror.org/03e2r1r87</idno>
          <orgName>École nationale supérieure d'architecture de Paris-La Villette</orgName>
          <orgName type="acronym">ENSAPLV</orgName>
          <desc>
            <address>
              <addrLine>144, rue de Flandre - 75019 Paris</addrLine>
              <country key="FR"/>
            </address>
          </desc>
          <listRelation>
            <relation active="#struct-302628" type="direct"/>
          </listRelation>
        </org>
        <org type="regroupinstitution" xml:id="struct-302628" status="VALID">
          <idno type="IdRef">238277429</idno>
          <idno type="ROR">https://ror.org/042949r55</idno>
          <orgName>HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université</orgName>
          <orgName type="acronym">HESAM</orgName>
          <date type="start">2010-01-01</date>
          <desc>
            <address>
              <addrLine>15, rue Soufflot75005 Paris</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.hesam.eu</ref>
          </desc>
        </org>
        <org type="regroupinstitution" xml:id="struct-441569" status="VALID">
          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <idno type="ROR">https://ror.org/02feahw73</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>
            <address>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.cnrs.fr/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-542949" status="VALID">
          <orgName>Ministère de la Culture</orgName>
          <orgName type="acronym">MC</orgName>
          <date type="start">2017-05-17</date>
          <desc>
            <address>
              <addrLine>182 rue Saint-Honoré 75001 Pariis</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.culture.gouv.fr/</ref>
          </desc>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>