{"id":2237,"date":"2026-04-27T12:36:11","date_gmt":"2026-04-27T12:36:11","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/apercu-du-concept-de-systeme-de-coordonnees-et-de-plan-de-travail\/"},"modified":"2026-04-27T12:36:11","modified_gmt":"2026-04-27T12:36:11","slug":"apercu-du-concept-de-systeme-de-coordonnees-et-de-plan-de-travail","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/apercu-du-concept-de-systeme-de-coordonnees-et-de-plan-de-travail\/","title":{"rendered":"Aper\u00e7u du concept de syst\u00e8me de coordonn\u00e9es et de plan de travail"},"content":{"rendered":"
\n Tous les travaux de mod\u00e9lisation dans ProtaSteel sont r\u00e9alis\u00e9s dans un syst\u00e8me de coordonn\u00e9es direct (r\u00e8gle de la main droite). La mod\u00e9lisation de structures complexes peut n\u00e9cessiter plusieurs syst\u00e8mes de coordonn\u00e9es. Il existe quatre types de syst\u00e8mes de coordonn\u00e9es :<\/span><\/span><\/span>
<\/span><\/span>\n<\/div>\n
    \n
  1. Syst\u00e8me de coordonn\u00e9es g\u00e9n\u00e9ral<\/span><\/span><\/i><\/span>
    <\/span><\/span><\/li>\n
  2. Syst\u00e8me de coordonn\u00e9es<\/span><\/span><\/i><\/span>
    <\/span><\/span><\/li>\n
  3. Syst\u00e8me de coordonn\u00e9es utilisateur<\/span><\/span><\/i>
    <\/span><\/span><\/li>\n
  4. Syst\u00e8me de coordonn\u00e9es d’\u00e9l\u00e9ment<\/span><\/span><\/i>.<\/span><\/span>
    <\/span><\/li>\n<\/ol>\n

    Le syst\u00e8me de coordonn\u00e9es d’\u00e9l\u00e9ment sert uniquement aux t\u00e2ches propres \u00e0 l’\u00e9l\u00e9ment, comme l’affectation de charges ou l’affichage des r\u00e9sultats d’analyse. Les trois autres syst\u00e8mes s’utilisent pour les commandes de cr\u00e9ation et de modification.<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    Un seul des trois syst\u00e8mes de coordonn\u00e9es peut \u00eatre actif \u00e0 la fois. Le syst\u00e8me de coordonn\u00e9es actif est appel\u00e9 le<\/span><\/span> <\/span><\/span><\/span>Plan de travail actif<\/span><\/span><\/b>. C’est le plan XY du syst\u00e8me de coordonn\u00e9es actif. Le plan de travail actif (ou syst\u00e8me de coordonn\u00e9es actif) peut basculer \u00e0 tout moment entre le syst\u00e8me g\u00e9n\u00e9ral, le syst\u00e8me de vue et le syst\u00e8me utilisateur. \u00c0 la cr\u00e9ation d’un nouveau projet, le plan de travail actif est r\u00e9gl\u00e9 sur le syst\u00e8me de coordonn\u00e9es g\u00e9n\u00e9ral. <\/span><\/span><\/span><\/p>\n

    \n
    \n \"Info\"Si les utilisateurs souhaitent configurer le plan de travail avec une vue diff\u00e9rente, veuillez vous reporter<\/span><\/span><\/span> \u00e0 <\/span>Configuration du plan de travail<\/a>.<\/span><\/span><\/span>\n <\/div>\n<\/div>\n

    Le plan de travail s’affiche sous la forme d’une paire d’axes, les axes X et Y du syst\u00e8me de coordonn\u00e9es actuellement actif (plan de travail actif) :<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    <\/span>
    <\/span><\/span><\/p>\n

    La fl\u00e8che rouge<\/span><\/span> <\/span><\/span><\/span><\/b>indique l’axe <\/span>X<\/b><\/span> et la fl\u00e8che<\/span><\/span> <\/span><\/span><\/span>verte<\/b><\/span><\/span> <\/span><\/span><\/span><\/b>indique l’axe <\/span>Y<\/b><\/span>. <\/span><\/span><\/span><\/p>\n

    \n
    \n \"Notes\"<\/p>\n
    \n L’axe Z n’est pas affich\u00e9 et suit la r\u00e8gle de la \u00ab main droite \u00bb.\n <\/div>\n

    <\/span>\n <\/div>\n<\/div>\n

    En g\u00e9n\u00e9ral, toutes les commandes de cr\u00e9ation d’\u00e9l\u00e9ments et de modification (copier, d\u00e9placer, pivoter, etc.) s’ex\u00e9cutent dans le plan de travail actif.<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    Syst\u00e8me de coordonn\u00e9es g\u00e9n\u00e9ral (WCS)<\/span><\/span><\/b>
    <\/span><\/span><\/h2>\n

    Le syst\u00e8me de coordonn\u00e9es global est appel\u00e9 Syst\u00e8me de coordonn\u00e9es g\u00e9n\u00e9ral. Il n’existe qu’un seul Syst\u00e8me de coordonn\u00e9es g\u00e9n\u00e9ral et il ne peut pas \u00eatre modifi\u00e9.<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    Syst\u00e8me de coordonn\u00e9es de vue (VCS)<\/span><\/span><\/b>
    <\/span><\/span><\/h2>\n

    Chaque fen\u00eatre de vue poss\u00e8de son propre syst\u00e8me de coordonn\u00e9es local. Le syst\u00e8me de coordonn\u00e9es des vues cr\u00e9\u00e9es avec<\/span><\/span> <\/span><\/span><\/span>Cr\u00e9er une vue 3D<\/span><\/span><\/b> <\/span><\/span><\/span>globale<\/span><\/span><\/b> <\/span><\/span><\/span>est identique au Syst\u00e8me de coordonn\u00e9es g\u00e9n\u00e9ral.<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    Syst\u00e8me de coordonn\u00e9es utilisateur (UCS)<\/span><\/span><\/b>
    <\/span><\/span><\/h2>\n

    En plus du WCS et du VCS, les utilisateurs peuvent d\u00e9finir un syst\u00e8me de coordonn\u00e9es ind\u00e9pendant des vues ou du WCS. Il est appel\u00e9<\/span><\/span> <\/span><\/span><\/span>Syst\u00e8me de coordonn\u00e9es utilisateur<\/span><\/span><\/b>. L’utilisateur ne peut pas cr\u00e9er plusieurs syst\u00e8mes de coordonn\u00e9es d\u00e9finis par l’utilisateur \u00e0 la fois. Autrement dit, lorsque l’utilisateur cr\u00e9e un autre syst\u00e8me de coordonn\u00e9es d\u00e9fini par l’utilisateur, le pr\u00e9c\u00e9dent est remplac\u00e9 par le nouveau.<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    Syst\u00e8me de coordonn\u00e9es d’\u00e9l\u00e9ment<\/span><\/span><\/b>
    <\/span><\/span><\/h2>\n

    Chaque \u00e9l\u00e9ment (barre) poss\u00e8de son propre syst\u00e8me de coordonn\u00e9es d’\u00e9l\u00e9ment. Ce syst\u00e8me est un syst\u00e8me cart\u00e9sien direct dot\u00e9 d’une orientation par d\u00e9faut. Il sert \u00e0 d\u00e9finir les rel\u00e2chements d’extr\u00e9mit\u00e9 des \u00e9l\u00e9ments filaires ou \u00e0 visualiser les efforts dans l’\u00e9l\u00e9ment. Les axes du syst\u00e8me de coordonn\u00e9es d’\u00e9l\u00e9ment sont not\u00e9s 1, 2 et 3.<\/span><\/span><\/span>
    <\/span><\/span><\/p>\n

    Syst\u00e8me de coordonn\u00e9es local de l’\u00e9l\u00e9ment filaire<\/span><\/span><\/b><\/span>
    <\/span><\/span><\/p>\n

    L’axe local 1 est dirig\u00e9 le long de la ligne reliant le n\u0153ud de d\u00e9part au n\u0153ud d’arriv\u00e9e. Le sens positif de l’axe 1 va du n\u0153ud de d\u00e9part vers le n\u0153ud d’arriv\u00e9e. Les deux autres axes se situent dans le plan perpendiculaire \u00e0 l’axe 1 et sont orient\u00e9s selon un angle sp\u00e9cifi\u00e9, appel\u00e9 angle de rotation<\/b>. L’angle de rotation<\/b> est d\u00e9fini par rapport \u00e0 l’orientation par d\u00e9faut de l’\u00e9l\u00e9ment filaire.<\/span><\/p>\n

    \n Syst\u00e8me de coordonn\u00e9es local de l’\u00e9l\u00e9ment filaire :<\/u><\/b><\/span><\/span>
    <\/span><\/span>\n<\/div>\n

    <\/span>
    <\/span><\/span><\/p>\n

    Orientation par d\u00e9faut du syst\u00e8me de coordonn\u00e9es local :<\/u><\/b><\/span><\/span><\/p>\n

    \n
    <\/span><\/span>\n<\/div>\n

    <\/p>\n

    \n \n<\/div>\n","protected":false},"excerpt":{"rendered":"

    Tous les travaux de mod\u00e9lisation dans ProtaSteel sont r\u00e9alis\u00e9s dans un syst\u00e8me de coordonn\u00e9es direct (r\u00e8gle de la main droite). La mod\u00e9lisation de structures complexes…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":{"_whitepaper_youtube_videos":"","_whitepaper_youtube_url":"","_whitepaper_youtube_thumbnail":"","footnotes":""},"categories":[40],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2237","wiki","type-wiki","status-publish","hentry","category-modelling-detailing"],"yoast_head":"\nAper\u00e7u du concept de syst\u00e8me de coordonn\u00e9es et de plan de travail<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez le concept de syst\u00e8me de coordonn\u00e9es et de plan de travail, un \u00e9l\u00e9ment cl\u00e9 pour mod\u00e9liser des structures avec pr\u00e9cision et coh\u00e9rence.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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