Analysis of mechanical systems with adaptable functions for the evaluation of functional coupling and component importance

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• 作者：Y.-W. Yu (1)
  Y.-M. Deng (1)
  W. F. Lu (2)
  A. Y. C. Nee (2)
  
  1. Faculty of Mechanical Engineering and Mechanics ; Ningbo University ; 818 Fenghua Rd. ; Ningbo ; Zhejiang Province ; 315211 ; People鈥檚 Republic of China
  2. Department of Mechanical Engineering ; National University of Singapore ; Singapore ; Singapore
  
• 关键词：Functional coupling ; Component importance ; Design analysis ; Mechanical system with adaptable function
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：76
• 期：5-8
• 页码：1449-1458
• 全文大小：676 KB
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• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

Mechanical systems with adaptable functions are versatile in functionalities and compact in physical structure than ordinary ones, hence are useful in many industrial and agricultural applications. One aspect of design analysis for these systems is the analysis of functional coupling degree among the adaptable functions, because this is a measurement of how compact and material-effective (thus cost-effective) the systems are. Existing work on functional coupling is mainly oriented to multiple-function systems rather than adaptable-function systems, where the former owes multiple functions without the need of adjustment or replacement of system components. The purpose of this paper is to investigate the methodologies for the evaluation of functional coupling and component importance of adaptable-function systems, so as to provide support for the development of this kind of mechanical systems. To this end, the function-component dependency is investigated first by exploiting the methods for design change propagation, whereby a change possibility matrix is proposed and calculated, and a function-component incidence matrix is developed. Based on the incidence matrix, the functional coupling degree is evaluated to measure the coupling between individual functions, and a comprehensive coupling degree is evaluated to measure the functional coupling of the entire system. These results are then used for the evaluation of component utilization and component importance. Finally, a design case of an adaptable-function juicing machine is studied to illustrate the proposed methods as well as the related concepts.