The Tension Control Optimization Theory, TCOT, allows for heavy duty truck and bus tires with greater bead and belt durability and increased fuel efficiency than conventionally shaped truck and bus tires, without sacrificing other important performance characteristics such as maneuverability, wear resistance, etc. Before TCOT, conventional truck and bus tires used the theory of the natural equilibrium shape as a base. TCOT technology expands the Rolling Contour Optimization Theory, RCOT, and proposes the ultimate tire casing contour according to tire application. TCOT optimizes the control of the tension in an inflated tire and the control of the change of the contour by inflation pressure, and regulates strains in the belts and plycord edges, limiting the occurrence and spread of minute but potentially damaging cracks in the vulnerable edges of a rolling tire.
This research is the application of new design method for integrating the optimum shape and strength design process. The products is manufactured from product design which can use the advanced characteristic of composite materials obtained by the experiment and the numerical analysis. Here, the collaboration of the design and the strength analysis by using composite materials is carried out. The products, which are made from high strength composite materials, need new product design technology which draws out the characteristic of material's advantage. Existing product developments tend to separate product design from product planning. The process consists of three stages as follows; 1) Planning the shape of the product by designers, 2) Calculating the strength by numerical analysis, 3) Designing the product. It is performed a styling design by requirements from the engineering point of view. By using this design method of high-strength materials, we designed new styling ZIGZAG Chair made of the carbon fiber reinforced plastic with excellent strength and lightweight.
The purpose of this study is to apply a new design method, which integrates both optimum strength and product design. Here, the collaboration of design and strength by using composite materials is administered. Many products, which are made from high strength composite materials, require new product design technology. Existing product developments tend to separate product design from product planning. The process begins from planning the shape of the product, then calculating the strength, and lastly designing the product. In our new design method, we create from an engineering point of view. By using a design method of high-strength materials, we designed a new ZIGZAG CHAIR made of carbon fiber reinforced plastic of excellent strength and light-weight.
This study is the application of new design method for integrating the product design (styling and functional design) and the engineering design (strength design of structure), which can make the best use of the composite materials' characteristics obtained by the experiment and the analysis. Among them, the carbon fiber reinforced composite plastics (CFRP) have excellent high strength and lightness. Here, using these materials' characteristics, ZIGZAG Chair made from wood, which had the refined style, was redesigned by CFRP. In this redesign process, the engineering point of view was used as a new proposed design method. The designed ZIGZAG Chair was manufactured by hand lay-up molding of CFRP according to analytical results, and its styling and strength were evaluated. The analytical results, that is, strength and displacement, were in good agreement with the pilot model's one.
The purpose of this research is the application of new design method for integrating the optimum strength evaluation and the product design which can make the best use of the composite material's characteristics obtained by the experiment and the analysis. Here, the collaboration of the design and the strength analysis by using composite materials is carried out. The products, which are made from high strength composite materials, need new product design technology which draws out the characteristic of material's advantage. Existing product developments tend to separate product design from product planning. The process consists of a certain flow, starting from planning the shape of the product by designers, then calculating the strength, and lastly designing the product. In the new design method, it is performed a styling design by requirements from the engineering point of view. By using this design method of high-strength materials, we designed new styling ZIGZAG Chair made of the carbon fiber reinforced plastic with excellent strength and lightweight. And then, analyzed it.
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