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Presentation on theme: "1Weaver Innovation Tool: Axiomatic Design (A Brief Introduction) Jonathan Weaver UDM ME Department."— Presentation transcript: 1 1Weaver Innovation Tool: Axiomatic Design (A Brief Introduction) Jonathan Weaver UDM ME Department 2 2Weaver References Nam P. Suh, The Principles of Design, Oxford Series on Advanced Manufacturing, 1990. K. Yang & B. El-Haik, Design for Six Sigma: A Roadmap for Product Development, McGraw Hill, 2003. Deo & Suh, Axiomatic Design of Customizable Automotive Suspension, Proceedings of ICAD2004, ICAD-2004-38. Lui & Soderborg, Improving an Existing Design Based on Axiomatic Design Principles, Proceedings of ICAD2000, ICAD-055. 3 3Weaver Axiomatic Design Most principally based on the work of Nam Suh at MIT The ultimate goal of Axiomatic Design is to establish a science base for design and to improve design activities by providing the designer with a theoretical foundation based on logical and rational thought processes and tools. Other goals: –To make human designers more creative –Reduce the random search process –Minimize the iterative trial-and-error process –Determine the best designs among those proposed –Endow the computer with creative power through the creation of the science base for the design field 4 4Weaver Axiomatic Design (Cont.) Complete coverage of Axiomatic design is a very long endeavor; here we’ll just introduce it Axioms are general principles or self-evident truths that cannot be derived or proven to be true except that there are no counter-examples or exceptions. Two axioms were identified by examining the common elements that are always present in good designs, be it a

Product, process, or systems design. They were also identified by examining actions taken during the design stage that resulted in dramatic improvements. 5 5Weaver Axiomatic Design (Cont.) The two Axioms: –Independence Axiom: The independence of Functional Requirements (FRs) must be always maintained, where FRs are defined as the minimum number of independent functional requirements that characterize the design goals. –Information Axiom: Among those designs that satisfy the Independence Axiom, the design that has the smallest information content is the best design. 6 6Weaver Axiomatic Design (Cont.) Violating Axiom 1 results in a coupled design Violating Axiom 2 results in system complexity 7 7Weaver Axiomatic Design (Cont.) The Independence Axiom is often misunderstood. Many people confuse between the functional independence with the physical independence. The Independence Axiom requires that the functions of the design be independent from each other, not the physical parts. The second axiom would suggest that physical integration is desirable to reduce the information content, if the functional independence can be maintained. Both axioms can be illustrated using a faucet as an example. 8 8Weaver Axiomatic Design (Cont.) Let’s discuss the ‘classic’ faucet design problem from the perspective of axiomatic design –What are the two principle functional requirements? –What are the two principle design parameters? –Is it axiomatic? 9 9Weaver Axiomatic Design (Cont.) How about now? 10 10Weaver Axiomatic Design (Cont.) Matrices can be an effective way to understand the mapping between functional parameters and design parameters For the faucet design examples: 11 11Weaver Axiomatic Design (Cont.) In

2092 Accesses AbstractThe basic concepts and the framework of Axiomatic Design (AD) provide powerful tools in the design of products and product families, especially for visualizing the design goals and improving the design process. When learning how to apply AD, however, nearly a half of the uninitiated designers like students may need to devote much effort to advance a sufficient number of different design concepts in terms of functional requirements (FRs) and/or design parameters (DPs), which is often done in abstract phrases like the first step in AD. The instructors must encourage them to think freely and squeeze out all the FRs and DPs they have in their minds and must guide them to integrate FRs functionally and DPs physically to obtain the desired design matrix. Similar content being viewed by others ReferencesNakao M, Iino K (2018) Students list FRs chronologically and DPs spatially, and need to integrate FRs functionally and DPs physically. In: Puik E, Foley JT, Cochran D, Betasolo M (eds) 12th international conference on axiomatic design (ICAD). MATEC web of conferences, Reykjavík, Iceland Google Scholar Suh NP (2001) Axiomatic design—advances and applications. Oxford University Press Google Scholar Thompson MK (2013) Improving the requirements process in axiomatic design theory. In: Annals of the CIRP, 1, vol 62, pp 115–118 (2013) Google Scholar Download references Author informationAuthors and AffiliationsThe University of Tokyo, Tokyo, JapanMasayuki Nakao & Kenji IinoAuthorsMasayuki NakaoYou can also search for this author in PubMed Google ScholarKenji IinoYou can also search for this author in PubMed Google