Campean, FelicianYildirim, Unal2017-06-022017-06-022017-05Campean F and Yildirim U (2017) Enhanced sequence diagram for function modelling of complex systems. Procedia CIRP. 60: 273-278.http://hdl.handle.net/10454/12111YesThis paper introduces a novel method referred to as Enhanced Sequence Diagram (ESD) to support rigorous functional modelling of complex multidisciplinary systems. The ESD concept integrates an exchanges based functional requirements reasoning based on a coherent graphical schema, integrated with the system operational analysis based on a sequence diagram. The effectiveness of the method to support generic function modelling of complex multidisciplinary systems at the early conceptual design stages is discussed in conjunction with an electric vehicle powertrain example, followed by an assessment of potential impact for broader application of the method in the industry.en© 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).Systems engineeringSequence diagramsFunctional requirementsComplex multidisciplinary systemsArticlehttps://doi.org/10.1016/j.procir.2017.01.053CC-BY-NC-ND