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Numerical Model Study of Prototype Drop Tests on Cube and Cubipod® Concrete Armor Units Using the Combined Finite–Discrete Element Method
Journal of Marine Science and Engineering ( IF 2.9 ) Pub Date : 2021-04-23 , DOI: 10.3390/jmse9050460
Giulio Scaravaglione , John-Paul Latham , Jiansheng Xiang

This paper aims to evaluate the structural strength of unreinforced concrete armor units (CAU), named Cubipod®, used on rubble-mound breakwaters and coastal structures, through a numerical methodology using the combined finite–discrete element method (FDEM). A numerical modeling methodology is developed to reproduce the results of an experimental examination published by Medina et al. (2011) of a free-fall drop test performed on a 15 t conventional Cubic block and a 16 t Cubipod® unit. The field results of the Cube drop tests were used to calibrate the model. The numerically simulated response to the Cubipod® test is then discussed in the context of a validation study. The calibration process and validation study provide insights into the sensitivity of breakage to tensile strength and collision angle, as well as a better understanding of the crushing and cracking damage of this unit under drop test impact conditions.

中文翻译:

有限元和离散元法相结合的立方和Cubipod®混凝土装甲单元原型跌落试验的数值模型研究

本文旨在评估无钢筋混凝土装甲单元(CAU)的结构强度,命名为立方单体®,在瓦砾丘防波堤和海岸结构,用于通过使用所述组合的有限离散单元法(FDEM)的数值方法。开发了一种数值建模方法,以重现Medina等人发表的实验检查结果。(2011)一15吨常规立方块上执行的自由落体试验和16吨立方单体的®单元。多维数据集跌落测试的现场结果用于校准模型。该数值模拟应对立方单体®然后在验证研究的背景下讨论测试。校准过程和验证研究可洞悉断裂对拉伸强度和碰撞角度的敏感性,并更好地理解在跌落试验冲击条件下该装置的破碎和破裂损伤。
更新日期:2021-04-23
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