{"id":1060,"date":"2020-03-13T11:14:01","date_gmt":"2020-03-13T10:14:01","guid":{"rendered":"https:\/\/blog.topsolid.fr\/?p=1060"},"modified":"2021-08-04T16:12:59","modified_gmt":"2021-08-04T14:12:59","slug":"conception-ascendante-descendante","status":"publish","type":"post","link":"https:\/\/blog.topsolid.com\/fr\/conception-ascendante-descendante\/","title":{"rendered":"Conception ascendante et descendante : comment tirer parti de ces deux mondes ?"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb3.22&Prime; custom_padding=\u00a0\u00bb0|0px|54px|0px|false|false\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb0|0px|0|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.2.2&Prime;]<\/p>\n<p><em>Pour mod\u00e9liser un ensemble, en amont d\u2019un projet, plusieurs approches existent. La conception peut ainsi \u00eatre ascendante ou descendante. Quels sont les avantages et inconv\u00e9nients de chacun de ces modes de conception\u00a0? Ces deux strat\u00e9gies sont-elles compl\u00e9mentaires\u00a0? Explications.\u00a0<\/em><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb35px|0px|0|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.2.2&Prime; custom_padding=\u00a0\u00bb||0px|||\u00a0\u00bb]<\/p>\n<h2>Qu\u2019est-ce qu\u2019une conception ascendante\u00a0?<\/h2>\n<p>Une <strong>conception ascendante<\/strong> (Bottom\/Up) est souvent appel\u00e9e <strong>conception par remontage<\/strong>. Elle consiste \u00e0 concevoir de mani\u00e8re individuelle des pi\u00e8ces \/ assemblages et \u00e0 les assembler. On part de l\u2019\u00e9l\u00e9ment primaire jusqu\u2019\u00e0 l\u2019assemblage final.<\/p>\n<p>C\u2019est une <strong>m\u00e9thode de conception robuste et performante<\/strong> car il n\u2019y aucun lien entre documents. Elle est aussi simple \u00e0 comprendre et \u00e0 mettre en place car tr\u00e8s basique. C\u2019est la m\u00e9thode de travail historique des <a href=\"https:\/\/www.topsolid.fr\/produits\/topsoliddesign.htm\"><strong>logiciels de conception CAO<\/strong><\/a> g\u00e9n\u00e9ralistes.<\/p>\n<p>La conception ascendante poss\u00e8de n\u00e9anmoins des inconv\u00e9nients. Elle n\u00e9cessite plus de temps et est plus fastidieuse, car le dessinateur doit \u00ab\u00a0r\u00e9fl\u00e9chir\u00a0\u00bb ses pi\u00e8ces pour garantir le montage des unes par rapport aux autres (report de c\u00f4tes, de formes \u2026).<\/p>\n<p>Le risque d\u2019erreur est important surtout en cas de modification \/ \u00e9volution du mod\u00e8le. En effet, des <strong>contr\u00f4les ou des modifications doivent \u00eatre effectu\u00e9s sur chacune des pi\u00e8ces concern\u00e9es par une \u00e9volution<\/strong>.<\/p>\n<p>Par exemple, sur un changement d\u2019entraxe de fixation entre 2 pi\u00e8ces, l\u2019utilisateur doit penser \u00e0 modifier ses 2 pi\u00e8ces et d\u00e9placer ses fixations.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1068 size-medium\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/1-changement-entraxe-de-fixation-300x233.png\" alt=\"1 - changement entraxe de fixation\" width=\"300\" height=\"233\" \/><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<h2>Qu\u2019est-ce qu\u2019une conception descendante\u00a0?<\/h2>\n<p>Une <strong>conception descendante (Top\/Down) est souvent assimil\u00e9e \u00e0 tort \u00e0 de la conception en place.<\/strong><\/p>\n<p>Le principe de base de la conception descendante est de <strong>partir de la contrainte<\/strong> (environnement, \u00e9pure, lot de param\u00e8tres\u2026) <strong>pour aller jusqu\u2019\u00e0 la d\u00e9finition des \u00e9l\u00e9ments les plus simples<\/strong> (les pi\u00e8ces).<\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p>La <strong>contrainte est mat\u00e9rialis\u00e9e la plupart du temps par une \u00e9pure 2D ou 3D de la conception \u00e0 r\u00e9aliser<\/strong>. Elle d\u00e9finit de mani\u00e8re globale les caract\u00e9ristiques techniques de l\u2019ouvrage. On l\u2019appelle tr\u00e8s souvent squelette de conception\u00a0:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1069 size-full\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/2-squelette-de-conception.png\" alt=\"2 - squelette de conception\" width=\"422\" height=\"746\" srcset=\"https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/2-squelette-de-conception.png 422w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/2-squelette-de-conception-170x300.png 170w\" sizes=\"(max-width: 422px) 100vw, 422px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Avec ce sch\u00e9ma, la conception est facilit\u00e9e, car le <strong>dessinateur peut s\u2019appuyer sur cette \u00e9pure pour cr\u00e9er ses diff\u00e9rentes pi\u00e8ces<\/strong>. Un dernier assemblage est cr\u00e9\u00e9 pour regrouper les diff\u00e9rentes pi\u00e8ces. On appelle cette m\u00e9thode\u00a0\u00ab\u00a0m\u00e9thode en losange\u00a0\u00bb, car l\u2019ensemble forme un losange\u00a0:<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1070 size-full\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/3-m\u00e9thode-en-losange.png\" alt=\"3 - m\u00e9thode en losange\" width=\"457\" height=\"268\" srcset=\"https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/3-m\u00e9thode-en-losange.png 457w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/3-m\u00e9thode-en-losange-300x176.png 300w\" sizes=\"(max-width: 457px) 100vw, 457px\" \/><\/p>\n<p><em>Pointe sup\u00e9rieure\u00a0: Squelette<\/em><\/p>\n<p><em>Corps\u00a0: pi\u00e8ces<\/em><\/p>\n<p><em>Pointe inf\u00e9rieure\u00a0: Assemblage de remontage<\/em><\/p>\n<p><em>\u00a0<\/em><\/p>\n<h3>Quelle diff\u00e9rence avec une conception en place\u00a0?<\/h3>\n<p>La conception en place est une variante, un compl\u00e9ment de la conception descendante. On l\u2019appelle d\u2019ailleurs conception horizontale sur certaines solutions. Elle permet de <strong>concevoir les pi\u00e8ces les unes par rapport aux autres<\/strong>. Les avantages sont \u00e9vidents. Le concepteur a plus de facilit\u00e9s \u00e0 faire correspondre des fixations, r\u00e9cup\u00e9rer les dimensions de pi\u00e8ces adjacentes, tenir compte de l\u2019encombrement d\u2019un autre ensemble etc. Le tout sans effort.<\/p>\n<p>&nbsp;<\/p>\n<h2>Conception ascendante ou descendante\u00a0: que choisir\u00a0?<\/h2>\n<p>Comment savoir de prime abord quel est le mode de conception le plus adapt\u00e9, selon le type de projets ou le type de pi\u00e8ces con\u00e7ues et fabriqu\u00e9es\u00a0? Il existe un certain nombre de cas o\u00f9 il peut \u00eatre utile d\u2019utiliser d\u2019une ou l\u2019autre m\u00e9thode\u00a0:<\/p>\n<h3>Les cas pour lesquels une conception ascendante\u00a0est pertinente<\/h3>\n<ul>\n<li>Assemblages m\u00e9caniques basiques<\/li>\n<li>Assemblages standards non param\u00e9triques<\/li>\n<li>Assemblages o\u00f9 les pi\u00e8ces n\u2019ont pas de contraintes fortes les unes par rapport aux autres<\/li>\n<li>Assemblages o\u00f9 les modifications vont \u00eatre limit\u00e9es<\/li>\n<li>Exemples\u00a0:\n<ul>\n<li>Certaines machines sp\u00e9ciales<\/li>\n<li>Montages d\u2019usinage<\/li>\n<li>Produits finis<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u00a0<\/h3>\n<h3>Les cas pour lesquels une conception descendante\u00a0est pertinente<\/h3>\n<ul>\n<li>Assemblages param\u00e9triques<\/li>\n<li>Projets n\u00e9cessitant un lien entre les diff\u00e9rents sous-ensembles<\/li>\n<li>Assemblages o\u00f9 les pi\u00e8ces sont fortement contraintes les unes par rapport aux autres<\/li>\n<li>Exemple\u00a0:\n<ul>\n<li>Chaudronnerie<\/li>\n<li>Ouvrages de serrurerie (escalier, garde-corps\u2026)<\/li>\n<li>Outillage (moule d\u2019injection\u2026)<\/li>\n<li>Agencement<\/li>\n<li>Mobilier<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25&Prime; background_color=\u00a0\u00bb#D0001D\u00a0\u00bb custom_padding=\u00a0\u00bb12px|0px|12px|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb3.27.4&Prime;]<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ffffff; font-size: x-large;\"><strong>La gamme de solutions CAO, FAO, ERP TopSolid<\/strong><\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_5,1_5,1_5,1_5,1_5&Prime; _builder_version=\u00a0\u00bb3.25&Prime; module_alignment=\u00a0\u00bbcenter\u00a0\u00bb custom_margin=\u00a0\u00bb||\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_5&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSCam-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsolidcam.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime; border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb border_style_all=\u00a0\u00bbinset\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6&Prime; box_shadow_horizontal=\u00a0\u00bb1px\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSDesign-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsoliddesign.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime; border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6&Prime; box_shadow_horizontal=\u00a0\u00bb1px\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSSheetmetal-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsolidsheetmetal.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime; border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6&Prime;][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSWood-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsolidwood.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime; border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6&Prime; box_shadow_horizontal=\u00a0\u00bb1px\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSErp-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsoliderp.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime; border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6&Prime;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb35px|0px|35px|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.2.2&Prime;]<\/p>\n<h3>Conception ascendante ou descendante\u00a0: les param\u00e8tres \u00e0 prendre en compte<\/h3>\n<p>Le type de projet, s\u2019il doit \u00e9voluer ou non, si des modifications importantes peuvent arriver en cours de projet, si la conception poss\u00e8de des r\u00e8gles math\u00e9matiques de conception contraignantes&#8230; <strong>De nombreux param\u00e8tres vont venir d\u00e9terminer le choix d\u2019une conception ascendante ou descendante.<\/strong> Il n\u2019y a <strong>pas de bonne ou mauvaise m\u00e9thode<\/strong>, simplement des compromis \u00e0 faire.<\/p>\n<p>&nbsp;<\/p>\n<h2>Conception ascendante et descendante\u00a0: pourquoi il faut viser la compl\u00e9mentarit\u00e9\u00a0?<\/h2>\n<p>Inutile d\u2019opposer ces deux modes de conception, qui sont parfaitement compl\u00e9mentaires. D\u2019ailleurs, <strong>l\u2019utilisation exclusive d\u2019une m\u00e9thode ou d\u2019une autre peut conduire l\u2019utilisateur \u00e0 se couper de tout le b\u00e9n\u00e9fice de l\u2019autre<\/strong>. A l\u2019heure o\u00f9 le mot efficience est aussi important qu\u2019efficacit\u00e9, le gain de productivit\u00e9 doit se faire \u00e0 tous les niveaux, y compris sur les m\u00e9thodes de conception.<\/p>\n<h3>Les difficult\u00e9s \u00e0 faire co-exister deux principes de conception oppos\u00e9s pour un unique projet<\/h3>\n<p>Toute la difficult\u00e9 r\u00e9side dans le juste milieu \u00e0 trouver entre l\u2019une et l\u2019autre. Malheureusement aucune r\u00e8gle miracle n\u2019existe et ce travail ne peut \u00eatre fait sans tenir compte du projet, de l\u2019entreprise et du secteur d\u2019activit\u00e9.<\/p>\n<p><strong>Exemple pour les m\u00e9talleries serrureries<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1071 size-full\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/4-exemple-m\u00e9talleries-serrureries.jpg\" alt=\"4 - exemple m\u00e9talleries serrureries\" width=\"885\" height=\"826\" srcset=\"https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/4-exemple-m\u00e9talleries-serrureries.jpg 885w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/4-exemple-m\u00e9talleries-serrureries-300x280.jpg 300w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/4-exemple-m\u00e9talleries-serrureries-768x717.jpg 768w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/4-exemple-m\u00e9talleries-serrureries-480x448.jpg 480w\" sizes=\"(max-width: 885px) 100vw, 885px\" \/><\/p>\n<p>Le squelette est ici le b\u00e2timent issu d\u2019un relev\u00e9 de cotes ou provenant directement d\u2019un architecte. Les ouvrages sont con\u00e7us de mani\u00e8re ind\u00e9pendante mais en appui direct sur l\u2019environnement. Un assemblage final (pointe basse) regroupe l\u2019ensemble de l\u2019ouvrage.<\/p>\n<p>Dans ce cas, le d\u00e9coupage est g\u00e9ographique. Il peut \u00eatre aussi logique au fonctionnel comme dans l\u2019exemple ci-dessous\u00a0:<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1072 size-full\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/5-decoupage-geographique.jpg\" alt=\"5 - decoupage geographique\" width=\"762\" height=\"818\" srcset=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/5-decoupage-geographique.jpg 762w, https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/5-decoupage-geographique-480x515.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 762px, 100vw\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>A noter qu\u2019entre le squelette et le document de remontage (les 2 pointes du losange), la structure peut \u00eatre sur plusieurs niveaux avec potentiellement des relations entre certains sous-ensembles fonctionnels.<\/p>\n<p>&nbsp;<\/p>\n<h2>Conception ascendante et descendante\u00a0: comment TopSolid permet de tirer le meilleur parti de ces deux modes<\/h2>\n<p>TopSolid autorise nativement et sans artifice <strong>la gestion de l\u2019int\u00e9gralit\u00e9 de ces modes de conception<\/strong>. Particuli\u00e8rement \u00e0 l\u2019aise en conception en place et en param\u00e9trage, il vous permettra d\u2019utiliser le meilleur de chacune de ces m\u00e9thodes pour concevoir efficacement tout type d\u2019ouvrage.<\/p>\n<p>Pour les <strong>conceptions les plus importantes<\/strong>, TopSolid poss\u00e8de un gestionnaire d\u2019espaces de travail. Celui-ci permettra un d\u00e9coupage g\u00e9ographique d\u2019un ouvrage gr\u00e2ce \u00e0 des volumes d\u00e9signant les zones de travail\u00a0:<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1073 size-full\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/6-zones-de-travail.jpg\" alt=\"6 - zones de travail\" width=\"587\" height=\"716\" srcset=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/6-zones-de-travail.jpg 587w, https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/6-zones-de-travail-480x585.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 587px, 100vw\" \/><\/p>\n<p>Tout en b\u00e9n\u00e9ficiant de la puissance du param\u00e9trage et de l\u2019associativit\u00e9\u00a0:<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1067 size-full\" src=\"https:\/\/blog.topsolid.fr\/wp-content\/uploads\/2020\/03\/7-param\u00e9trage-de-lassociativit\u00e9.jpg\" alt=\"7 - param\u00e9trage de l'associativit\u00e9\" width=\"759\" height=\"551\" srcset=\"https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/7-param\u00e9trage-de-lassociativit\u00e9.jpg 759w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/7-param\u00e9trage-de-lassociativit\u00e9-300x218.jpg 300w, https:\/\/blog.topsolid.com\/wp-content\/uploads\/2020\/03\/7-param\u00e9trage-de-lassociativit\u00e9-480x348.jpg 480w\" sizes=\"(max-width: 759px) 100vw, 759px\" \/><\/p>\n<p>Un changement du squelette \/ environnement entrainera la mise des assemblages o\u00f9 il est utilis\u00e9 avec actualisation de la conception. TopSolid rejouera cette conception en respectant les r\u00e8gles et les contraintes donn\u00e9es par l\u2019utilisateur, ici, respecter une distance maximale entre les poteaux.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb0|0px|25.4063px|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb3.27.4&Prime;][\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_3,1_3,1_3&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb0|0px|30px|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/Demandez-un-RDV.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/contact.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime; module_alignment=\u00a0\u00bbcenter\u00a0\u00bb custom_margin=\u00a0\u00bb||\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/07\/Obtenir-un-devis.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/content.topsolid.com\/demandedevis\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb4.8.1&Prime; module_alignment=\u00a0\u00bbcenter\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; sticky_enabled=\u00a0\u00bb0&Prime;][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb3.25&Prime; custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/07\/Demande-dinformation.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/contact.htm\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_phone=\u00a0\u00bb\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23&Prime;][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour mod\u00e9liser un ensemble : plusieurs approches existent. La conception peut \u00eatre ascendante ou descendante. Quels sont les avantages et inconv\u00e9nients de chacun de ces modes de conception ? <\/p>\n","protected":false},"author":4,"featured_media":1065,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","content-type":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[5],"tags":[21,23,22,26,24],"class_list":["post-1060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cao","tag-cao","tag-cfao","tag-fao","tag-projet","tag-topsolid"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Conception ascendante et descendante : comment tirer parti de ces deux mondes ? - TopSolid&#039;Blog<\/title>\n<meta name=\"description\" content=\"Pour mod\u00e9liser un ensemble : plusieurs approches existent. 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