This work also has predictive modeling for off-highway vehicles that
are not on Earth.Ken Camrin, Assistant Professor of Mechanical Engineering, MIT
It is not easy to simulate movement on granular soil, for example, to cultivate one literIt is important for scientists to understand what the impact will beexert sand on a moving object.
In recent centuries, the discipline of terramechanics has emerged, which predicts the performance of locomotive vehicles, mainly round wheels and tank treads, in grainy landscapes such as deserts.
New development of engineers and physicists fromThe Massachusetts Institute of Technology and Georgia Institute of Technology allows for near real-time simulation of wheel movement when driving over sandy terrain.
Their analysis of the continuum revealed an extended formula for drag forces acting on fast-moving objects.While the static force response that the granular medium exhibits is already known as static RFT (Resistive Force Theory).However, the expanded formulation of the DRFT includes two key effects, depending on thevelocity when calculating the force on each small area of the object's surface.
The new development, the authors believe, is crucial for trajectory planning and optimal design of locomotors for terrestrial as well as extraterrestrial applications such as rovers and lunar rovers.
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