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  4. Efficient Numerical Simulation of Soil-Tool Interaction
 
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2022
Doctoral Thesis
Title

Efficient Numerical Simulation of Soil-Tool Interaction

Abstract
The simulation of soil-tool interaction forces using the Discrete Element Method (DEM) is widely established. In addition to an acceptable prediction quality, the efficient simulation of granular material on high performance clusters with modern parallelization strategies for the industrial applications is indispensable. Although, for relevant problem sizes such simulations are so far not real-time capable. Further on, the inclusion of the human-machine interaction at a driving simulator combined with soil-tool simulation poses many interesting research questions. We therefore strive for sufficient performance and consider alternative models and algorithms to achieve real-time capability. First, we discuss different types of particle models regarding force accuracy and efficiency. The pros and cons are pointed out and the suitability for real-time applications is discussed. Second, we present two machine learning algorithms which are real-time capable and allow force predictions in real-time. The application at the in-house excavator simulator is discussed and the capability is shown using relevant numerical examples.
Thesis Note
Zugl.: Kaiserslautern, TU, Diss., 2022
Author(s)
Jahnke, Jonathan
Fraunhofer-Institut für Techno- und Wirtschaftsmathematik ITWM  
Publisher
Fraunhofer Verlag  
DOI
10.24406/publica-340
File(s)
1835_6_Jahnke_ePrint.pdf (12.07 MB)
Link
Link
Rights
Under Copyright
Language
English
Fraunhofer-Institut für Techno- und Wirtschaftsmathematik ITWM  
Keyword(s)
  • Realtime computation

  • Soil simulation

  • Machine learning

  • Recurrent Neural Networks

  • Lookup Tables

  • Data-based modelling

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