A New Multi-Body Dynamic Model for Seafloor Miner and Its Trafficability Evaluation

Dai, Yu; Zhu, X.; Chen, L. S.; Liu, H.

doi:10.2507/ijsimm14(4)co19

Cited by 16 publications

(14 citation statements)

References 8 publications

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“…8. The particular seabed terramechanical model, which has been developed in previous research [5], is integrated into the multi-rigid-body model of the SMS mining machine. The newly designed counter-rotating cutter head and its excavation loads obtained from the above DEM numerical simulation are all applied on the model of the SMS mining machine.…”

Section: Dynamic Simulations Of a Sms Mining Machinementioning

confidence: 99%

“…Dai and Liu built a seabed tracked mining machine to be a single-rigid-body model integrating a track-soil discretized interaction mechanical model [4]. Dai et al established a novel multi-rigid-body model of a seabed mining machine that integrated a terramechanical model of seabed particular soil; their simulations demonstrated the machine has favourable mobility performance on the seabed [5].…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Dai¹,

Chen²,

Zhu³

2016

Int. j. simul. model.

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In this research, the mechanical characteristic parameters of the seabed massive sulfide (SMS) are obtained quantitatively using laboratory uniaxial compression strength (UCS) test and triaxial compression strength (TCS) test. A three-dimensional discrete element (DEM) model of the SMS is developed in the EDEM simulation environment and are then validated by numerically simulating the laboratory UCS and indirect tensile strength (Brazilian disc) tests. A new counter-rotating pick-type drum cutter for excavating the SMS is proposed, and a corresponding DEM model for the excavation process is established. Numerical simulations for the new counter-rotating cutter and a traditional single-rotating cutter are conducted, and the cutter forces in three orthogonal directions and the torques are obtained and compared. By integrating the new counter-rotating cutter, a three-dimensional multi-rigid-body dynamic model of a SMS mining machine is developed in the RecurDyn simulation environment, and simulations are conducted to evaluate its trafficability and mobility performance under the effect of the excavating cutter on the seabed complex terrain. This research can provide valuable and effective modelling methods for seabed mineral excavation process simulation, mining tool optimization and design and mining machine performance evaluation.

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Section: Dynamic Simulations Of a Sms Mining Machinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Dai¹,

Chen²,

Zhu³

2016

Int. j. simul. model.

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“…Published studies show that the reaction of the crack of oxygen-containing functional group is main form at the early stage. With coal rank increasing, the reaction turns to aromatics branched chain cracking, then to bituminous larger molecules crack during the stage of the coal-generated hydrocarbon process [19][20][21][22][23].…”

Section: Relationship Between Adsorption Capacity and Coal Crystallitementioning

confidence: 99%

Variations in Adsorption of Two Step Solvent Extracted Vitrain and Their Coal Crystallites Response

Chen

Wang

2018

Teh. vjesn.

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Adsorption capacity and crystallite characteristics of raw vitrains collected from western Guizhou and eastern Yunnan and their step extracted residues were analysed; the possible geochemical mechanism of methane adsorption on coal crystallite was discussed. The results show that the step extraction changes methane adsorption capacity on sample, and the change direction and magnitude depend on the coalification degree. The extraction also depolymerizes the coal crystallite. It is found that it has a synchronous relationship between the percent change of adsorption and the percent depolymerization of coal crystallite. It is suggested that the second coalification jump plays a key role on the percent change of methane adsorption and the percent depolymerization of crystallite. The crystallite depolymerization is an important reason that methane adsorption percent changes.

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“…A small-scale tracked vehicle was manufactured for the locomotion and trafficability analyses on soft and cohesive terrains [6], as shown in Fig. 2 a.…”

Section: Laboratory Motion Testmentioning

confidence: 99%

“…Li and Zhong built a virtual prototype of a seabed tracked mining vehicle and conducted simulations to estimate the locomotion and trafficability performance of the vehicle [5]. Dai et al developed new, multi-body dynamic models for two types of seafloor tracked mining vehicles and performed simulations to evaluate their mobility and trafficability performances; meanwhile, a mathematical model was established to evaluate their tractive trafficability [6,7].…”

Section: Introductionmentioning

confidence: 99%

A Mechanical-Hydraulic Virtual Prototype Co-Simulation Model for a Seabed Remotely Operated Vehicle

Dai¹,

Zhu²,

Chen³

2016

Int. j. simul. model.

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In this study, a virtual prototype model of a seabed tracked remotely operated vehicle (ROV) is established using the program RecurDyn/Track with the integration of a user-defined subroutine for a sediment terramechanics model. Laboratory tests for evaluating the mobility performances of a small tracked vehicle are conducted to validate the computational accuracy of the new virtual prototype model. A simulation model of a load independent flow distribution (LUDV) hydraulic control system for the tracked ROV is built using the program AMESim. Based on the combined RecurDyn-AMESim interface program design, a new virtual prototype co-simulation model for the mechanical-hydraulic system of the tracked ROV is developed. Co-simulations are conducted to analyse the dynamic performances of the motor actuators in the LUDV hydraulic system and the tracked ROV mobility performances. The co-simulation results demonstrate that the developed virtual prototype model of the ROV mechanical system can accurately simulate the load of the hydraulic control system, while the LUDV hydraulic controlling method can effectively improve the operational performance of a tracked ROV multi-actuator system. This research provides an effective and valuable co-simulation modelling method for mechanical-hydraulic system optimization, performance evaluation and operational control of the seabed tracked ROV.

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A New Multi-Body Dynamic Model for Seafloor Miner and Its Trafficability Evaluation

Cited by 16 publications

References 8 publications

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Variations in Adsorption of Two Step Solvent Extracted Vitrain and Their Coal Crystallites Response

A Mechanical-Hydraulic Virtual Prototype Co-Simulation Model for a Seabed Remotely Operated Vehicle

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