Year: 2015
Editor: Christian Weber, Stephan Husung, Marco CantaMESsa, Gaetano Cascini, Dorian Marjanovic, Serena Graziosi
Author: Ingerslev, Mattias; Jespersen, Mikkel Oliver; Goehler, Simon Moritz; Howard, Thomas J.
Series: ICED
Institution: Technical University of Denmark, Denmark
Section: Design Methods and Tools - part 2
Page(s): 001-010
ISBN: 978-1-904670-69-8
ISSN: 2220-4334


In product development there is a recognized tendency towards increased functionality for each new product generation. This leads to more integrated and complex products, with the risk of development delays and quality issues as a consequence of lacking overview and transparency.

The work described in this article has been conducted in collaboration with Novo Nordisk on the insulin injection device FlexTouch® as case product. The FlexTouch® reflects the characteristics of an integrated product with several functions shared between a relatively low number of parts.

In this article we present a novel way of visualizing relations between parts and functions in highly integrated mechanical products. The result is an interface diagram that supports design teams in communication, decision making and design management. The diagram gives the designer an overview of the couplings and dependencies within a product that can be used to estimate higher level consequences when making design changes. The diagram has further been used as a basis for evaluating the criticality of internal parts and functional organs.

Keywords: Functional Modelling, Robust Design, Decision Making, Design Change Management, Complexity

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