Abstract
Deep-sea mining vehicles can easily slip when walking on the surface of thin and soft sediments, so it is necessary to study the shear interaction between vehicles and sediments. The track plate is an important part of the travelling mechanism, thus, the study of the interaction characteristics of track plates and sediments can improve the traction force and the travelling performance of mining vehicles. In this study, the effects of various parameters on the shear interaction between the track plate and the seafloor sediment were studied. Firstly, a quasi-static equation of the single track plate–sediment interaction was established based on elastoplastic mechanics. Then, a numerical model of the track plate–sediment interaction was established by using the CEL method. Based on the model, the simulation results under different track plate structures were studied, and a comparison to the quasi-static equation was obtained. It is found that the calculated difference between the two methods is small, but the numerical simulation has wider applicability. Thus, the influence of different parameters which consisted of different velocities, numbers of grousers, and sediment layers was evaluated through CEL method, and the sediment thrust, stress change, disturbance were obtained.
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