1994 Volume 60 Issue 578 Pages 3552-3559
It is important to realize the digging resistance in the design of excavators of continuous bulk handling equipment. Until now, resistance has been determined by analyzing the load acting on the excavator from experiments. If operating conditions change, experiments must be conducted again. The purpose of this study is to analyze the dynamic load acting on continuous bulk handling equipment and to clarify the dynamic behavior. In this paper, a theory for the digging resistance has been established using the distinct element method. In the simulation based on the theory, the handled bulk material is represented by an aggregation of grains. Deformation and fracture of the material are expressed by the movement of grains. Digging resistance is calculated as total contact force between the grain elements and moving wall elements of buckets. This theory was applied in the analysis of a case of coal digging. By comparing our analytical results with experimental ones, the validity of the theory was confirmed.
Transactions of the Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers Series A
Transactions of the Japan Society of Mechanical Engineers Series B
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
