{"id":255,"date":"2014-12-16T15:27:50","date_gmt":"2014-12-16T15:27:50","guid":{"rendered":"https:\/\/shiplab.hials.org\/?page_id=255"},"modified":"2015-01-12T23:35:39","modified_gmt":"2015-01-12T23:35:39","slug":"modularization-process","status":"publish","type":"page","link":"https:\/\/shiplab.hials.org\/?page_id=255","title":{"rendered":"Simple Modularization Process applied to Ship Design"},"content":{"rendered":"<p style=\"text-align: right;\"><em>by Sth\u00e9fano Lande Andrade and\u00a0Thiago Gabriel Monteiro\u00a0&#8211; MSc Students in Ship Design\u00a0\/ H\u00f8gskolen i \u00c5lesund\u00a0<\/em><br \/>\n<em>Henrique M. Gaspar &#8211; Associate Professor Aalesund University College \/ Ulstein International SA <\/em><br \/>\n<em>(sthefano.lande@gmail.com, thiagogabrielm@gmail.com), v1, Dec\u00a02014.<\/em><\/p>\n<p style=\"text-align: justify;\">[toc]<\/p>\n<p style=\"text-align: justify;\">The objective of this work is to present a simplified modularization process appllied to Ship Design. In short, given a module library, we are able to combine all the modules within and generate a fair amount of different, but viable designs. The connection process and setup viability is controlled by\u00a0a set of rules and the final designs are evaluated to determine their final characteristics. The following picture summarizes the Modularization Process.<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/1.PNG\" alt=\"\" width=\"60%\" \/><br \/>\nFigure 1 &#8211; Representation of the Modularization Process.<\/p>\n<h2 style=\"text-align: justify;\">1.Database<\/h2>\n<p>The\u00a0 database is composed by libraries of each module. In this case they are cataloged in an excel file, which contains all the information specific to each module and assigns an identification number to them. The number refers to the module type and the characteristics of each different modules. \u00a0This composition can be visualized bellow:<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/2.PNG\" alt=\"\" width=\"60%\" \/><br \/>\nFigure 2 &#8211; PSV Systems Breakdown. The third tier is composed by the modules used in this work.<\/p>\n<p>In this first approach, a\u00a0PSV will be described as a combination of 4 modules: Crane, Bow, Cargo Section and Propulsion.\u00a0The characteristics of\u00a0each of them are:<\/p>\n<p><span style=\"text-decoration: underline;\">Crane Library<\/span><\/p>\n<p>It will be composed of 3\u00a0modules \u00a0defined by lifting capacity, height and arm length:<\/p>\n<ul>\n<li>150 TM (height: 5 m; arm: 6 m);<\/li>\n<li>300 TM (height: 6 m; arm: 8 m);<\/li>\n<li>450 TM (height: 7 m; arm: 10 m).<\/li>\n<\/ul>\n<p><span style=\"text-decoration: underline;\">Bow Library<\/span><\/p>\n<p>It will be composed of 4 modules defined by type and beam.<\/p>\n<ul>\n<li>Conventional type and 18 m beam;<\/li>\n<li>X-Bow type and 18 m Beam;<\/li>\n<li>Conventional type and 20 m beam;<\/li>\n<li>X-Bow type and 20 m beam.<\/li>\n<\/ul>\n<p>Besides, all have 10 m in length and depth of 12 m.<\/p>\n<p><span style=\"text-decoration: underline;\">Cargo Section Library<\/span><\/p>\n<p>Composed of 4\u00a0modules, which are defined by length and beam:<\/p>\n<ul>\n<li>60 m length and 18 m beam;<\/li>\n<li>80 m length and 20 m beam;<\/li>\n<li>60 m length and 18 m beam;<\/li>\n<li>80 m length and 20 m beam.<\/li>\n<\/ul>\n<p>They also have a height of 12m<\/p>\n<p><span style=\"text-decoration: underline;\">Propulsion Section Library<\/span><\/p>\n<p>4 modules, defined by power, length and beam:<\/p>\n<ul>\n<li>100% Power,4 m length and 18 m beam;<\/li>\n<li>150% Power,7 m length and 18 m beam;<\/li>\n<li>100% Power,4 m length and 20 m beam;<\/li>\n<li>150% Power,7 m length and 20 m beam.<\/li>\n<\/ul>\n<p>And all have height of 12 m.<\/p>\n<p>Also, it\u2019s necessary to note the database should also include information about the CAD File location and Cost for each module.<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/3.PNG\" alt=\"\" width=\"60%\" \/> Figure 3 &#8211; The modules library<\/p>\n<p>The described modules were also drawn using the NX-Siemens program.<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/4.PNG\" alt=\"\" width=\"60%\" \/> Figure 4 &#8211; The designed modules for a first approach and how they are will be connected<\/p>\n<h2 style=\"text-align: justify;\">2.Rules<\/h2>\n<p style=\"text-align: justify;\">The library contains all the modules related to the design and in this simple case, 11 different parts were created and have attributed values. Their combination alone would result in 192 different results. Fortunately, this case can be lowered when some connection rules are in place. They are defined by the client requirements, classification society norms and the ability of modules to connect between them.<\/p>\n<p style=\"text-align: justify;\">If we consider but the connections restrictions, in this case bow, cargo and propulsion section must have the same beam, we end up with 48 different designs. The rules applied to the combination where defined using excel functions and evaluate the possible designs as feasible\/unfeasible.<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/5.PNG\" alt=\"\" width=\"60%\" \/> Figure 5 &#8211; The rules applied to the combinations.<\/p>\n<h2>\u00a03.Assemblies<\/h2>\n<p style=\"text-align: justify;\">After the combinations are evaluated, it is possible to create the assembled design. Using the pre-made modules and the CAD software, we are able to visualize the PSV as a whole. Furthermore, each module has it&#8217;s own properties, as defined previously, which will be used to define the vessel&#8217;s properties, as final length, power, height, beam, deck area, cargo area and lifting capacity.<\/p>\n<p style=\"text-align: justify;\">For a exemplification purpose two feasible designs were assembled and can be seen in the following picture, also with some of their final characteristics.<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/6.PNG\" alt=\"\" width=\"60%\" \/> Figure 6 &#8211; Design no.1 (right) and Design no.39 (left) CAD assemblies and main features.<\/p>\n<h2 style=\"text-align: justify;\">4.Evaluation<\/h2>\n<p style=\"text-align: justify;\">To decide which are the best solutions, we need to define a set of performance indicators<span style=\"color: #000000;\">.\u00a0<\/span>For this case, the following indicators were considered: Cost, Operability, Deck, Cargo Tank and Structural Analysis, which were considered as comparative factors and graded from n\u00a0to 100, were 100 is the biggest value in the assemblies. Cost is deducted from the final score. For the Operability, the X-Bow and 150% Power options are considered better than Conventional and 100% Power. Deck was divided in 2 components: Deck Area (0.4*L*B) and Crane, then graded.Cargo Tank\u00a0was calculated (0.4*L*B*D).<\/p>\n<p>Finally, after the solutions are graded, only the ones that satisfy the client\u2019s requirements are chosen to the next phase, which consists in a Structural Analysis using Finite Elements Method. The evaluation method for this example was an analysis of the stress caused by a cargo of 5 tons lifted by the crane, which was placed on the deck of the cargo section module.<\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" class=\"displayed aligncenter\" src=\"https:\/\/shiplab.hials.org\/media\/modularization_process\/7.PNG\" alt=\"\" width=\"70%\" \/> Figure 7 &#8211; Structural Analysis.<\/p>\n<h2 style=\"text-align: justify;\">Future Steps<\/h2>\n<p style=\"text-align: justify;\">To this stage, only a few examples were assembled using CAD software, NX-Siemens, and have been analysed structurally. To further this case study and display the advantages of the process, we are going to further the study by working with more examples. These will be created within a context, with client requirements and the final viable assemblies being evaluated structurally.<\/p>\n<h3 style=\"text-align: justify;\">Reuse Parts Library<\/h3>\n<p><i>Reuse Parts Library <\/i>is an easy and fast way to deal with standard designs, which need to be reused several times. It is possible to define these designs with different dimension, according to the user\u2019s needs. The use of this tool is explained in the <a title=\"Reuse Library Tutorial\" href=\"https:\/\/shiplab.hials.org\/?page_id=274\">link<\/a>.<\/p>\n<h3>Making a technical drawing<\/h3>\n<p>The NX-Siemens software offers a tool that makes possible to draw a 2D technical drawing from your 3D model. This <a title=\"Making a technical drawing in NX-Siemens\" href=\"https:\/\/shiplab.hials.org\/?page_id=281\">link<\/a>\u00a0will teach how to do it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>by Sth\u00e9fano Lande Andrade and\u00a0Thiago Gabriel Monteiro\u00a0&#8211; MSc Students in Ship Design\u00a0\/ H\u00f8gskolen i \u00c5lesund\u00a0 Henrique M. Gaspar &#8211; Associate Professor Aalesund University College \/ Ulstein International SA (sthefano.lande@gmail.com, thiagogabrielm@gmail.com), v1, Dec\u00a02014. [toc] The objective of this work is to present a simplified modularization process appllied to Ship Design. In\u2026<\/p>\n<p> <a class=\"continue-reading-link\" href=\"https:\/\/shiplab.hials.org\/?page_id=255\"><span>Continue reading<\/span><i class=\"crycon-right-dir\"><\/i><\/a> <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"class_list":["post-255","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=\/wp\/v2\/pages\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=255"}],"version-history":[{"count":10,"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=\/wp\/v2\/pages\/255\/revisions"}],"predecessor-version":[{"id":333,"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=\/wp\/v2\/pages\/255\/revisions\/333"}],"wp:attachment":[{"href":"https:\/\/shiplab.hials.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}