ELASTIC-PLASTIC DYNAMIC BUCKLING OF SADDLE-SHAPED BULKHEAD UNDER BLAST IMPACT LOADING

Li Rongfu Cheng Yuansheng Wang Yu Zeng Guangwu

Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (9) : 139-142,.

PDF(1061 KB)
PDF(1061 KB)
Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (9) : 139-142,.
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ELASTIC-PLASTIC DYNAMIC BUCKLING OF SADDLE-SHAPED BULKHEAD UNDER BLAST IMPACT LOADING

  • Li Rongfu1 Cheng Yuansheng1 Wang Yu2 Zeng Guangwu1
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Abstract

The elastic-plastic dynamic buckling properties of saddle-shaped bulkhead under blast impact loading are studied using the finite element software ANSYS/LS-DYNA. The Budiansky-Roth buckling criterion is utilized to judge the dynamic buckling of saddle-shaped bulkhead, and the effect of initial imperfection amplitude on dynamic buckling of saddle-shaped bulkhead is analyzed and compared with the traditional domed bulkhead which has the same weight, and then the effects of main designing parameters on dynamic buckling of saddle-shaped bulkhead are discussed. The results indicate that the dynamic buckling load of saddle-shaped bulkhead is highly enhanced compared with the traditional domed bulkhead which has the same weight and is insensitive to initial imperfection. The optimal dynamic buckling property will be achieved if design parameters are properly selected.

Key words

saddle-shaped bulkhead / domed bulkhead / impact load / dynamic buckling / Budiansky-Roth buckling criterion

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Li Rongfu Cheng Yuansheng Wang Yu Zeng Guangwu. ELASTIC-PLASTIC DYNAMIC BUCKLING OF SADDLE-SHAPED BULKHEAD UNDER BLAST IMPACT LOADING[J]. Journal of Vibration and Shock, 2009, 28(9): 139-142,
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