Enhancing biological system engineering realisation through advanced feature transfer and extenics: a bionic design approach

During the process of bionic design, the discrepancies between biological systems and engineering systems often result in designers being unable to handle the knowledge involved in biological systems effectively, thereby leading to a low utilisation rate of biological knowledge. This study proposes a model for the transformation of biological systems to engineering systems on the basis of feature transfer. First, the basic system is determined according to user requirements, followed by the search for suitable biological systems and the performance of similarity analysis. Second, the element model of extenics is used to represent biological systems, and the extension analysis method is used to extend biological systems. Then, on the basis of substance-field theory in TRIZ combined with the extension transformation method, three approaches for transforming biological systems into engineering systems are proposed: no processing, forward processing, and reverse processing. After transformation, the features of the engineering system are extracted and incorporated into the basic system to complete the structural design. The container bag outlet folding device is taken as an engineering case to validate the effectiveness of the proposed model.