Abstract
Product family design offers a cost-effective solution for providing a variety of products to meet the needs of diverse markets. At the beginning of product family design, designers must decide what can be shared among the product variants in a family. Optimal design formulations have been developed by researchers to find one optimal component sharing solution based on commonality, cost or technical performance of a product family. However, these optimization methods may not be able to apply in consumer product design because some metrics (e.g., visual appeal and ergonomics) of a consumer product cannot be formulized. In this paper, we suggest a tradeoff between commonality and the quality of the modular architecture in product family platform selection. We introduce a method for designers to identify multiple component sharing options that lie along a Pareto front of maximum commonality and strategic modularity. The component sharing options along the Pareto front can be evaluated, compared, and further modified. We demonstrate the method using a case study of product family platform selection of high-end and low-end impact drivers and electric drills. In the case study, the quality of the modular architecture is evaluated using a design structure matrix (DSM) for each of product variants. Three architectures along the Pareto front with maximum commonality, optimal modularity, and a balanced solution of the two metrics are highlighted and further examined to validate the effectiveness of our method.
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This material is based in part on work supported by the National Science Foundation under Award number CMMI-1200256. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
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Appendices
Appendix A: The product–component matrix (PCM) of the power tool product family
Table 8 displays the transposed PCM for the power tool case study referenced in Sect. 4. It contains the list of components that constitute each of the product variants in the case study.
Appendix B: Optimal component clusters of product variants in the power tool product family
Figure 13 shows the optimal clusters of product variants in the power tool case study referenced in Sect. 4. Each modular architecture alternative was compared with the clustering costs of this optimal clustering to calculate the modularity scores of the product variants and the product family.
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Baylis, K., Zhang, G. & McAdams, D.A. Product family platform selection using a Pareto front of maximum commonality and strategic modularity. Res Eng Design 29, 547–563 (2018). https://doi.org/10.1007/s00163-018-0288-5
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DOI: https://doi.org/10.1007/s00163-018-0288-5