Theoretical calculations for kilometer-scale deep-sea pressure-resistant composite cylinders were conducted.Based on thickness of cylinder pressure hull,a ring-stiffened cylinder pressure hull was optimal de-signed.Structure stability and strength of thousand meter class composite pressure hull was analyzed by finite ele-ment method.Finally the composite pressure hull was examined by hydrostatic pressure test.It is shown that main failure modes of ring-stiffened composite pressure hull is buckling;adding number of ring-ribs and thickness of cylinder both develop stability of pressure hull,adding number of ring-ribs is more effective than adding thickness of cylinder,compress modulus of CFRP plate have a great influence on stability of pressure hull;break pressure of ring-stiffened cylinder pressure hull shall be fixed because of initial fault in CFRP building,the fix ratio shall be in a range of 0.5-0.7 according to examination.
关键词
加筋圆柱壳/耐压壳体/屈曲稳定性/有限元分析
Key words
stiffened cylinder shell/pressure hull/buckling stability/finite element analysis
维普
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