Numerical Model Study of Prototype Drop Tests on Cube and Cubipod® Concrete Armor Units Using the Combined Finite–Discrete Element Method

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 devel...

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Bibliographic Details
Published in:Journal of marine science and engineering 2021-05, Vol.9 (5), p.460
Main Authors: Scaravaglione, Giulio, Latham, John-Paul, Xiang, Jiansheng
Format: Article
Language:English
Subjects:
Armor units
Breakage
Breakwaters
Calibration
Coastal structures
combined finite–discrete element method
Concrete
concrete armor unit
Construction
Cracking (fracturing)
Cubipod
Design
Designers
Discrete element method
drop test
Drop tests
fracture model
Hydraulics
Impact damage
Impact tests
Mathematical models
Numerical models
numerical simulation
Prototypes
Quality control
Reinforced concrete
Rubblemound breakwaters
Structural strength
Tensile strength
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Summary: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.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse9050460