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Research Papers

A Function Based Approach for Product Integration

[+] Author and Article Information
Vishwa Kalyanasundaram

Graduate Research Assistant
Department of Mechanical and
Aerospace Engineering,
University at Buffalo—SUNY,
Buffalo, NY 14260
e-mail: vishwasundaram@gmail.com

Kemper Lewis

Professor
ASME Fellow
Department of Mechanical and
Aerospace Engineering,
University at Buffalo—SUNY,
Buffalo, NY 14260
e-mail: kelewis@buffalo.edu

The designer can use the correspondent class if the component does not have a tertiary class descriptor.

Contributed by the Design Automation Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received March 11, 2013; final manuscript received November 4, 2013; published online January 17, 2014. Assoc. Editor: Irem Y. Tumer.

J. Mech. Des 136(4), 041002 (Jan 17, 2014) (15 pages) Paper No: MD-13-1117; doi: 10.1115/1.4026032 History: Received March 11, 2013; Revised November 04, 2013

Reconfigurable and multifunctional products are breeds of products that cater to the increased diversification of customer needs. Unlike single-state static products which can perform only one primary function, these products cater to different customer needs by performing more than one function with or without changing their configuration. However, there is a lack of systematic methods to support the conceptual task of combining two existing single-state products into an integrated product that provides multiple functions. In this work, a function based approach is proposed which provides more rigorous support to assess the feasibility of integrating two products. The function structures of the existing products are combined to obtain the overall function structure of the reconfigurable product. Function sharing, based on quantified functional similarity, is proposed and applied to identify functions that can be shared by the same component. The information obtained from the function structure is then mapped to the components of two existing products to analyze their roles in the final reconfigurable product architecture. A case study illustrates the proposed approach by analyzing the integration of a power drill and a dust buster.

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Figures

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Fig. 1

(a) Reconfigurable [2] (b) multifunctional products [3]

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Fig. 2

Elements of a function

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Fig. 4

Illustration of function sharing using a nail clipper (a) without function sharing (b) with function sharing [41]

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Fig. 5

Outline of the proposed approach

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Fig. 6

Function sharing matrix template

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Fig. 7

Nine elementary matrices

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Fig. 3

Sample of the (a) function sets (b) flow sets from reconciled function flow set [29]

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Fig. 9

Final function sharing matrix

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Fig. 10

(a) FCM of product 1 (b) FCM of product 2

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Fig. 11

(a) [FCM1]T of product 1 (b) FFS

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Fig. 12

Filtered table obtained using Eqs. (3) and (4)

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Fig. 13

Component sharing matrix

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Fig. 14

(a) Power drill (b) dust buster

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Fig. 15

Function structure of power drill arranged with respect to the PF and segregated into chunks

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Fig. 16

Function structure of dust buster arranged with respect to the PF and segregated into chunks

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Fig. 17

Nonconflicting functions

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Fig. 18

Integrated function structure schematic of reconfigurable drill and vacuum cleaner

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Fig. 19

Output flow descriptors sharing matrix

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Fig. 20

Function descriptors sharing matrix

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Fig. 21

Total function sharing matrix

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Fig. 22

Final function sharing matrix

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Fig. 23

FCM of power drill

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Fig. 24

FCM of dust buster

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Fig. 25

Components sharing matrix

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Fig. 26

Reconfigurable drill and vacuum cleaner product

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Fig. 27

Input flow descriptors sharing matrix

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