Comparison of bending characteristics by analysis of wires for hydrogen-charging hose

Youn-Kyou Kim1   Byeng-Ju Kim1   Guk-Hyun Kim1   Woo-Won  Youn1   Chul-Min  Son2,*   

1Research and Development Institute, Hwasung R&A Co. Ltd., Yangsan, Republic of Korea
2Eco-Friendly Hydrogen Electric Tractor & Agricultural Machinery Institute, Chungnam National University, Daejeon, Republic of Korea

Abstract

In this study, in order to develop a hose with heat resistance, pressure resistance, and durability performance that can be used for hydrogen fuel, CAE was performed on the wire applied to the important braided layer in the internal structure. Based on the results of a tensile test performed on three types of wires, the oblateness and maximum stress generated when the hose is bent were confirmed through computational analysis. As a result of the comparison, the oblateness showed a difference of about 1% without having a large effect on the change in wire diameter, and the maximum stress generated a difference of about 19%. Therefore, it was decided that the diameter of the wire should be selected according to the application requirements of the hose.

Figures & Tables

Fig. 1. Hydrogen fuel charge hose. (A) Hose layer structure, (B) Hose cross section.