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MBD is Not Binary

Posted by Bryan Fischer on April 22, 2021

Different companies view change differently. Some companies are comfortable making bigger changes, while others are more comfortable making smaller, incremental changes. Some companies see small changes as big changes. Often, companies are concerned about changing how they operate too much or too quickly. Corporate culture affects how companies accept and implement new ways of working. These are core issues in Model-Based Definition (MBD) and Model-Based Enterprise (MBE) initiatives.

MBD is not binary. That is, MBD isn't just on or off, it isn't just "you're doing MBD, or you aren't." There are many levels of MBD, different types of digital models, and different ways model-data can be used.

We created Dataset Classification Codes (DCCs) in ASME and ISO standards to describe general MBD options. The DCCs represent different ways of doing business.

DCC 1: Drawing-only, no model. Drawing is master authority. This is not MBD.

DCC 2: Drawing based on a model. Drawing is master authority. The model is not approved for other use.
This is not MBD.

DCC 3: Drawing + model. The combination of drawing and model is master authority – neither provides complete definition alone. This is a type of MBD.

DCC 4: Drawing and model (dual masters). Drawing is master authority, and model is master authority. Both are supposed to be 100% equivalent. The model half of this is MBD. Caution!

DCC 5: Model-only, no drawing. Model is master authority. This is MBD.

Note that other information can be included in datasets besides drawings and models. Also, note that there are other possible DCC structures.

The DCCs are defined in the context of product definition datasets, design engineering information. However, the DCC levels can be extended to process definition datasets and other uses.

How and why you implement MBD affects the benefits it offers and returns on investment. How do you want to do business? Do you want to take small steps or large steps? Do you know what's best for your environment? Do you understand the inefficiencies in your current work methods? We can help you understand the pros, cons, and tradeoffs and guide your organization on your model-based journey. Contact us to find out more.