• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2024, Vol. 60 ›› Issue (19): 225-240.doi: 10.3901/JME.2024.19.225

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Redesign Method of Product Structure Scheme Based on Structure Extension Model

LIU Shuaijun, SA Rina, LI Wenbo   

  1. College of Mechanical Engineer, Inner Mongolia University of Technology, Hohhot 010051
  • Received:2023-10-19 Revised:2024-07-31 Online:2024-10-05 Published:2024-11-27

Abstract: To solve the problems of non-functional function between the design elements of product structure, inconsistent form of action relationship, difficult to identify, poor extension of expression, a product structure scheme redesign method based on structure extension model is proposed. Considering the relationship between non-functional function and structure, the concept of product structure primitive is proposed based on the extension theory.It refers to entity element, interaction element and affordance element, and the structure extension model of product is constructed to express the design elements and action relationship of the product structure based on this concept.Through the mapping mechanism of multiple design domains such as requirement-affordance-interactive relationship-structure, mining the affordance of product to be improved through requirement-affordance mapping, identifying the structure of product to be improved through affordance-interactive relationship-structure mapping.The affordance elements are extended and transformed to obtain a feasible set of structure scheme.Optimal structure scheme is selected by the superiority evaluating method. The structure extension transformation rule is given to realize the product structure redesign scheme. Finally, the feasibility and effectiveness of the proposed method are verified by taking the redesign of the Achilles tendon rehabilitation device as an example.

Key words: affordance, structure extension model, product structure scheme, design change

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