CFRP 構造の特性評価に基づく新機能製品デザイン

抄録

In today's actual product developments, product design tends to be separated from product planning. After planning of shape and form of product by designer, its strength is evaluated by engineering analysis, then the product will be finally designed. Even if, there are many well designed forms of products, those sometimes have difficulty to commercialize by conventional method and technique from a restriction of strength and weight. The composite material that are typified by carbon fiber reinforced plastic (CFRP) has very high specific strength and low density compared with metals. Here, strength property of CFRP lamination structure should be evaluated before styling of product. We proposed a simplified modeling on CAD to represent the characteristics of CFRP which has high anisotropy. The material characteristics are expressed as a combination of several simple element models. In order to confirm the verification and validation of proposed model, three-point bending test and simulation were performed. Based on the result, its possibility to use for new design product that has excellent styling and enough strength can be examined. As the application of analysis results to product design, CAD modeling of outdoor wheelchairs was performed, and stress analysis was carried out. By using this modeling method, designer will be able to pursue the optimum structure design and styling effectively by considering the characteristics and behavior of original shapes he designed.