Experimental investigation of granules as crash-absorber in ship building
Experimental investigation of granules as crash-absorber in ship building
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DOI：
10.1080/17445302.2020.1727179
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发表时间：
2020-02
影响因子：
2.1
通讯作者：
C. Woitzik;A. Düster
中科院分区：
文献类型：
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作者：
C. Woitzik;A. Düster
本文研究了颗粒材料在船舶制造中作为碰撞吸收材料的应用。利用膨胀玻璃颗粒，在船舶碰撞过程中的能量耗散的增加进行了研究。为此，我们研究了简化的侧船体结构。进行了四个实验。一方面，我们在没有颗粒材料的情况下进行参考实验。另一方面，我们调查填充侧船体结构和由此产生的力-位移曲线相对于能量耗散，直到破裂的内船体。之后，这些实验是使用有限元法模拟。为此，通过拉伸试验确定钢的相应材料参数。基于莫尔-库仑材料模型，通过摩擦试验和三轴试验对颗粒进行了模拟。最后，仿真结果进行了讨论，提出的建模方法的优点和缺点。
ABSTRACT This work deals with the investigation of granules as crash absorber in ship building. Using expanded glass granules, the increase in energy dissipation during a ship collision is examined. For this purpose, we investigate a simplified side hull structure. Four experiments are conducted. On the one hand, we carry out reference experiments without granular material. On the other hand, we investigate filled side hull structures and the resulting force–displacement curves with respect to the energy dissipation until rupture of the inner hull. Afterwards, these experiments are simulated using the Finite Element Method. In order to do so, the corresponding material parameters for steel are determined using tension tests. The granules are modelled by means of friction tests and triaxial test, based on the Mohr–Coulomb material model. Finally, the simulation results are discussed and the advantages and disadvantages of the presented modelling approach are presented.