Deep sea collision dynamic buckling of titanium alloy pressure-resistant structure with ball head

GUO Tongtong1, 2, ZHAO Yanjie1, 2, LIU Ping1, 2, ZHU Ling4, LIU Jianhu1, 2

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (17) : 246-253.

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PDF(2384 KB)
Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (17) : 246-253.

Deep sea collision dynamic buckling of titanium alloy pressure-resistant structure with ball head

  • GUO Tongtong1,2, ZHAO Yanjie1,2, LIU Ping1,2, ZHU Ling4, LIU Jianhu1,2
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Abstract

Titanium alloy deep-sea equipment may collide with seafloor fixed objects such as seamounts and reefs during underwater operation, which may have a great impact on the structural stability of titanium alloy under high stress. At present, there is not much research on this problem of structural stability under double load environment, and there is no empirical formula for reference. On the basis of dynamic mechanical properties tests of titanium alloy materials, combined with theoretical analysis and a large number of numerical simulations, the dynamic buckling criteria of titanium alloy spherical column composite structures under the combined action of collision force concentrated load and uniform pressure were established. The obtained results can provide important references for underwater navigation safety of deep-sea equipment.

Key words

subsea collision / pressure-resistant structures / TC4 titanium alloy / dynamic buckling / judgment criteria

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GUO Tongtong1, 2, ZHAO Yanjie1, 2, LIU Ping1, 2, ZHU Ling4, LIU Jianhu1, 2. Deep sea collision dynamic buckling of titanium alloy pressure-resistant structure with ball head[J]. Journal of Vibration and Shock, 2024, 43(17): 246-253

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