A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modeling Excavator-Soil Interaction
This paper reviews models of how ground-engaging tools interact with soils, the rigid-body dynamics of excavating machines, and how to combine these models to estimate soil parameters or to find faults in machines from anomalous dynamic behaviour. Soil-tool interaction models rely primarily on assumptions of homogeneous, isotropic soil properties, and tools that have simple geometries and steady motion through the soil. In many cases, these are reasonable assumptions, provided that the strain rate of the soil is not extreme. Parametric formulations are discussed for soil failure under stress from a non-deformable tool; but finiteelement and distinct-element methods are not considered. The formulation of governing equations for the rigid-body dynamics of the machine that carries the tool are discussed. By using parametric equations for the combined system of machine and soil, it is possible to estimate the parameters of the system by measuring machine motions and interaction forces at the tool and base. Possible sources of error are discussed for this approach, with recommendations for how to determine the parameters of the system.
Modeling Excavator-Soil Interaction
This paper reviews models of how ground-engaging tools interact with soils, the rigid-body dynamics of excavating machines, and how to combine these models to estimate soil parameters or to find faults in machines from anomalous dynamic behaviour. Soil-tool interaction models rely primarily on assumptions of homogeneous, isotropic soil properties, and tools that have simple geometries and steady motion through the soil. In many cases, these are reasonable assumptions, provided that the strain rate of the soil is not extreme. Parametric formulations are discussed for soil failure under stress from a non-deformable tool; but finiteelement and distinct-element methods are not considered. The formulation of governing equations for the rigid-body dynamics of the machine that carries the tool are discussed. By using parametric equations for the combined system of machine and soil, it is possible to estimate the parameters of the system by measuring machine motions and interaction forces at the tool and base. Possible sources of error are discussed for this approach, with recommendations for how to determine the parameters of the system.
Modeling Excavator-Soil Interaction
Wan, Richard (editor) / Alsaleh, Mustafa (editor) / Labuz, Joe (editor) / Lipsett, M. G. (author) / Moghaddam, R. Yousefi (author)
2011-01-01
20 pages
Article/Chapter (Book)
Electronic Resource
English