Research on Dynamic Response and Damage Characteristics of Fixed Supported One-way Stiffened Plates under Blast Loading

doi:10.3969/j.issn.1000-1093.2019.03.019

Abstract

Abstract: Based on the damage and protection of warship hull structure subjected to the internal blast of anti-ship missile, the deformation failure characteristics and laws of multiple one-way stiffened plate structures under blast loading are studied. The finite element software LS-DYNA is used to simulate and calculate the damage effect of blast shock wave on the one-way stiffened plate. The damage process of one-way stiffened plate under close-in explosion is analyzed. The deformation failure mode of one-way stiffened plates and the deformation law of stiffened plates under typical blast shock wave loading were obtained. The results show that the maximum dimensionless deflection has a clear linear relationship with the dimensionless impact load and the relative stiffness, respectively, under thet condition of overall shear or large plastic deformation. In the case of load determination, the failure mode of stiffened plate and the critical region of the transition between failure modes can be determined by changing the structural parameters (relative stiffness) of stiffened plate and the load parameters. Key

Key words: stiffenedplate, blastshockwave, loadparameter, deformationmode

CLC Number:

O383⁺.3

JAIO Liqi， HOU Hailiang， CHEN Pengyu， JIN Jian. Research on Dynamic Response and Damage Characteristics of Fixed Supported One-way Stiffened Plates under Blast Loading[J]. Acta Armamentarii, 2019, 40(3): 592-600.

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第40卷
第3期2019 年3月兵工学报ACTA
ARMAMENTARIIVol.40No.3Mar.2019

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