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Soil modeling with a DEM Lookup approach
Author(s) -
Jahnke Jonathan,
Steidel Stefan,
Burger Michael
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900427
Subject(s) - lookup table , table (database) , computer science , process (computing) , set (abstract data type) , base (topology) , state (computer science) , basis (linear algebra) , earthquake shaking table , data set , algorithm , data mining , computational science , simulation , engineering , artificial intelligence , mathematics , structural engineering , geometry , programming language , mathematical analysis
We consider an efficient, data‐driven approximation approach for the prediction of soil‐tool interaction forces. In a time‐consuming offline phase, we perform a set of Discrete Element Method basis simulations. In each simulation, we consider a different tool state, process the acquired data and save it into a data structure, which we call a Lookup Table. In an online phase, when performing arbitrary tool maneuvers, we obtain tool forces and moments from the Lookup Table, based on the current tool state. In other words, we generate a data base of tool maneuver forces and access it efficiently.