{"id":35416,"date":"2024-02-27T01:02:00","date_gmt":"2024-02-27T09:02:00","guid":{"rendered":"https:\/\/ssi-corporate.com\/?p=35416"},"modified":"2024-02-22T10:34:33","modified_gmt":"2024-02-22T18:34:33","slug":"the-importance-of-parametric-modeling-in-shipbuilding","status":"publish","type":"post","link":"https:\/\/www.ssi-corporate.com\/ja\/blog-shipbuilding-solutions\/the-importance-of-parametric-modeling-in-shipbuilding\/","title":{"rendered":"The importance of parametric modeling in shipbuilding\u00a0"},"content":{"rendered":"\n

\u2018Parametric Modeling\u2019 is often mentioned when discussing CAD systems in the shipbuilding industry. What does it mean? How is shipbuilding-specific parametric CAD software different from generic parametric CAD software? In this post we\u2019ll explore how parametric modeling helps streamline the ship design process, quickly creating an intelligent 3D product model. Then, we\u2019ll look at how ShipConstructor works with parametrics to manage change.<\/p>\n\n\n

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ShipConstructor\u2019s intelligent ship model<\/figcaption><\/figure><\/div>\n\n\n
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What is parametric modeling?<\/h3>\n\n\n\n

Parametric modeling is when parts are defined using algorithmic processes rather than direct manipulation. When a parameter changes, the part changes. Parts can be defined by numeric input, datum lines, interfacing parts, geometric parameters, features, variables, and constraints.<\/p>\n\n\n\n

Direct modeling, as opposed to parametric modeling, is modeling un-intelligent parts. Geometry is defined without a relationship to another part or algorithmic value.<\/p>\n\n\n\n

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Why a parametric model?<\/h3>\n\n\n\n

A parametric part<\/a> is quickly created by inputting basic parameters, e.g., length, width, height. This may also include selecting associated parts, datum lines, stock association and assembly (connecting parts must be compatible). The part inherits further properties from its relationship to catalogs and standards. A part is modified when a parameter or connecting part is changed. For example, if you move a plate part, any connecting parts (like stiffeners) would move with the plate. If you move a pump, the connecting pipe will move with it and adjust between the pump and connecting asset (e.g., valves, tanks, etc.).<\/p>\n\n\n\n

Here\u2019s an example of some of the parameter inputs used to define two types of common shipbuilding parts within ShipConstructor. Input parameters can be default values, only changed when required.<\/p>\n\n\n\n

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Benefits<\/h3>\n\n\n\n

There are 3 main benefits to parametric modeling<\/p>\n\n\n\n

1. Part Definition<\/h4>\n\n\n\n

Designers can quickly define intelligent parts without manually drawing the geometry and adding data. A timesaving ten-fold!<\/p>\n\n\n\n

2. Part Modification<\/h4>\n\n\n\n

Designers can quickly modify parts by updating a parameter. For example, changing the height above the baseline of a tank top deck (defined by a mold plane) moves the deck to the new height.<\/p>\n\n\n\n

3. Updating related parts <\/h4>\n\n\n\n

Associated parts are updated. Further to the previous example, all the frames below the deck would update in shape to suit the modified deck height as their vertical boundaries are defined by the baseline and tank top.<\/p>\n\n\n\n

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Industry-Specific VS Generic CAD Parametrics<\/h3>\n\n\n\n

Generic CAD software typically use parameters that are geometric, stock, or material-based, and\/or connected to related geometry. Industry-specific software, like ShipConstructor<\/a>, goes a few steps further by incorporating shipbuilding-specific concepts and manufacturing methodologies. These parameters cannot be easily configured or controlled in generic solutions and help to streamline the design process. Industry-Specific Parameters<\/p>\n\n\n\n

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Industry-specific parameters include<\/h4>\n\n\n\n