Multiparameter Numerical Investigation of Two Types of Moving Inter-actions Between the Deep-Sea Mining Vehicle Track Plate and Seabed Soil:Digging and Rotating Motions

• Published in: 中国海洋工程（英文版） Vol. 38; no. 3; pp. 408 - 423
• Main Authors: SUN Peng-fei, LYU Hai-ning, YANG Jian-min, XU Zhi-yong
• Format: Journal Article
• Language: English
• Published: State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China 2024; Yazhou Bay Institute of Deepsea SCI-TECH,Shanghai Jiao Tong University,Sanya 572024,China; Institute of Marine Equipment,Shanghai Jiao Tong University,Shanghai 200240,China; Yazhou Bay Institute of Deepsea SCI-TECH,Shanghai Jiao Tong University,Sanya 572024,China%State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
• Subjects: digging motion; deep-sea mining vehicle; rotating motion; track plate-seabed soil interaction; CEL numerical method
• ISSN: 0890-5487
• DOI: 10.1007/s13344-024-0033-y

To ensure the safe performance of deep-sea mining vehicles(DSMVs),it is necessary to study the mechanical char-acteristics of the interaction between the seabed soil and the track plate.The rotation and digging motions of the track plate are important links in the contact between the driving mechanism of the DSMV and seabed soil.In this study,a numerical simulation is conducted using the coupled Eulerian-Lagrangian(CEL)large deformation numerical method to investigate the interaction between the track plate of the DSMV and the seabed soil under two working conditions:rotating condition and digging condition.First,a soil numerical model is established based on the elasto-plastic mechanical characterization using the basic physical and mechanical properties of the seabed soil obtained by in situ sampling.Subsequently,the soil disturbance mechanism and the dynamic mechanical response of the track plate under rotating and digging conditions are obtained through the analysis of the sensitivity of the motion parame-ters,the grouser structure,the layered soil features and the soil heterogeneity.The results indicate that the above parameters remarkably influence the interaction between the DSMV and the seabed soil.Therefore,it is important to consider the rotating and digging motion of the DSMV in practical engineering to develop a detailed optimization design of the track plate.