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

Y. L. Zhou, D. M. Luo, W. X. Wang

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Article number012063
JournalIOP Conference Series: Materials Science and Engineering
Volume504
Issue number1
DOIs
Publication statusPublished - Apr 26 2019
Event2nd International Workshop on Materials Science and Mechanical Engineering, IWMSME 2018 - Qingdao, China
Duration: Oct 26 2018Oct 28 2018

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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