Abstract: Because the wall-thickness design formulas of liner are not explicitly specified in related design and manufacturing standards of hoop wrapped cylinders, which makes certain difference among some parameters, such as wall thickness of liner and autofrettage pressure, about the same specification in the market. Therefor, some inconveniences are brought to the regulatory work. Design method of steel liner was comprehensively summarized firstly; then the finite element analysis models are established according to design results; at last, wall thicknesses differences caused by different standard systems and changes of fiber stress ratio and autofrettage pressure caused by differences of wall thickness are compared and analyzed. The results showed that wall thickness designed by GB 5099 is larger compared with the other two kinds of standard systems, and the difference is about 4.35%~6.0%, leading to the difference of fiber stress ratio ranges from 3.5% to 30.8%. At the same time, the reasonable range of autofrettage pressure is also different.

Key words: hoop wrapped cylinders, design of liner, fiber stress ratio, autofrettage pressure