Numerical analysis of collapse load and specific strength for moderate-walled Ti6Al4V-laminate composite submersible vessel under external hydrostatic pressure

被引：0

作者：

Zhou, Y. L. ^{[1
]}

Luo, D. M. ^{[2
]}

Wang, W. X. ^{[3
]}

机构：

[1] Foshan Univ, Dept Mechatron Engn, Foshan 528000, Peoples R China

[2] Foshan Univ, Dept Civil Engn, Foshan 528000, Peoples R China

[3] Kyushu Univ, Res Inst Appl Mech, Fukuoka, Fukuoka 8168580, Japan

来源：

2ND INTERNATIONAL WORKSHOP ON MATERIALS SCIENCE AND MECHANICAL ENGINEERING (IWMSME2018) | 2019年 / 504卷

关键词：

LAMINATED CYLINDRICAL-SHELLS; IMPERFECTION SENSITIVITY; CYLINDERS;

D O I：

10.1088/1757-899X/504/1/012063

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effects of geometrical imperfections on the collapse load and specific strength of moderate-walled submersible vessel made of Ti6Al4V-laminate composites and Ti6Al4V alloy, respectively, have been investigated in this study. Two kinds of imperfections, which are the initial ovality along cross-section direction and the winding-induced waves along longitudinal symmetric axis, are considered. Two numerical analyses including the non-linear finite element (FE) and elastic-plastic buckling analysis are performed by the commercial software MSC Marc/Mant 2005. The obtained results indicate that initial imperfections have an obvious influence on the collapse loads of both the Ti6Al4V-laminate composite submersible vessel and the Ti6Al4V one. The collapse load is mainly governed by the elastic-plastic buckling critical load, which is conservative and safe for a vessel to bear the admissible failure load under the deepwater. Moreover, the Ti6Al4V-laminate composite submersible vessel has a better capability to resist imperfections than the Ti6Al4V one.

引用

页数：9