Function-Behaviour-Structure ontology
Open-knowledge reference entry

The Function-Behaviour-Structure ontology – or short, the FBS ontology – is an ontology of design objects, i.e. things that have been or can be designed. The Function-Behaviour-Structure ontology conceptualizes design objects in three ontological categories: function (F), behaviour (B), and structure (S). The FBS ontology has been used in design science as a basis for modelling the process of designing as a set of distinct activities. This article relates to the concepts and models proposed by John S. Gero and his collaborators. Similar ideas have been developed independently by other researchers.
Overview
The ontological categories composing the Function-Behaviour-Structure ontology are defined as follows:
Function (F): the teleology (purpose) of the design object, i.e.“what the object is for". For example, the functions of a turbocharger include increasing the power output of an engine, providing reliability, and providing affordability.
Behaviour (B): the attributes that can be derived from the design object’s structure, i.e.“what the object does".For example, the behaviour of a turbocharger includes attributes such as air mass flow, efficiency ratio, thermal strength, and weight.
Structure (S): the components of the design object and their relationships., i.e.“what the object consists of”.
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This entry incorporates text from “Function-Behaviour-Structure ontology” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.