Print Email Facebook Twitter A validated co-simulation of grab and moist iron ore cargo Title A validated co-simulation of grab and moist iron ore cargo: Replicating the cohesive and stress-history dependent behaviour of bulk solids Author Mohajeri, M. (TU Delft Transport Engineering and Logistics) de Kluijver, Wilbert (Nemag) Helmons, R.L.J. (TU Delft Offshore and Dredging Engineering) van Rhee, C. (TU Delft Offshore and Dredging Engineering; TU Delft Rivers, Ports, Waterways and Dredging Engineering) Schott, D.L. (TU Delft Transport Engineering and Logistics) Date 2021 Abstract The traditional design approach of grabs and other bulk handling equipment consists of manufacturing and testing physical prototypes. A novel design approach is to use a co-simulation of MultiBody Dynamics (MBD) and Discrete Element Method (DEM), in which the virtual prototype of a new concept interacts with bulk solids. Therefore, this study develops and validates a full-scale co-simulation that models the grabbing process of cohesive and stress-history dependent iron ore. First, by executing in-situ measurements during the unloading of a vessel, grab-relevant bulk properties of the cargo, such as penetration resistance, are determined. Second, full-scale grabbing experiments are conducted in the cargo hold, which allows the process to be recorded in realistic operational conditions. Third, full-scale co-simulation is set up using the material model that has been calibrated based on an elasto-plastic adhesive contact model. Fourth, the co-simulation is validated by comparing its predictions to experimental data from various aspects, such as the force in cables and the torque in winches. The validated co-simulation proves that the stress-dependent behaviour of cohesive cargo as it interacts with the grab could be captured successfully. Valuable information such as a grab's kinematics and dynamics, as well as the porosity distribution of collected bulk solids, can be extracted from the simulation, supporting engineers to enhance the design and operation of equipment. Subject Cohesive materialsDEMGrabIron oreValidation To reference this document use: http://resolver.tudelft.nl/uuid:ac4b62e0-5f49-4a10-9ef4-99196ac091ca DOI https://doi.org/10.1016/j.apt.2021.02.017 ISSN 0921-8831 Source Advanced Powder Technology, 32 (4), 1157-1169 Part of collection Institutional Repository Document type journal article Rights © 2021 M. Mohajeri, Wilbert de Kluijver, R.L.J. Helmons, C. van Rhee, D.L. Schott Files PDF 1_s2.0_S0921883121000819_main.pdf 3.34 MB Close viewer /islandora/object/uuid:ac4b62e0-5f49-4a10-9ef4-99196ac091ca/datastream/OBJ/view