Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1271656 | International Journal of Hydrogen Energy | 2012 | 17 Pages |
Stress distributions in the composite layers of a Type III hydrogen pressure vessel composed of a thin aluminum liner (5 mm) and a thick composite laminate (45 mm) were calculated by using three different modeling techniques. The results were analyzed and compared with the plausible stress distribution calculated by a full ply-based modeling technique. A laminate-based modeling technique underestimated the generated stresses especially at the border between the cylinder and dome parts. A hybrid modeling technique combining a laminate-based modeling for the dome part with a ply-based modeling for the cylinder part was also tried, but it overestimated the generated stresses at the border. In order for the ply-based modeling technique to carry out precise analysis, a fiber trajectory function for the dome part was derived and the composite thickness variation was also considered.
► A full ply-based modeling technique provided the most accurate stress distribution. ► A fiber trajectory function at the dome part was derived. ► Thickness variation of dome part was considered for accurate stress distribution.