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Search: WFRF:(Thoeni Klaus)

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1.
  • Thoeni, Klaus, et al. (author)
  • Designing waste rock barriers by advanced numerical modelling
  • 2019
  • In: Journal of Rock Mechanics and Geotechnical Engineering. - : Elsevier. - 1674-7755. ; 11:3, s. 659-675
  • Journal article (peer-reviewed)abstract
    • Design of waste rock barriers forming safety berms for haul trucks requires knowledge of complex interactions which cannot readily be tested by physical means. An advanced numerical model based on non-smooth multi-domain mechanics is presented together with model calibration using limited full-scaleexperimental data. Waste rock is represented by spherical particles with rolling resistance, and an ultra-class haul truck is represented by a rigid multibody system interconnected with mechanical joints. The model components are first calibrated and then the calibrated model is used for simulating various collision scenarios with different approach conditions and safety berm geometries. Numerical predictions indicate that the width of the berm is most critical for efficiently stopping a runaway truck. The model can also predict if a certain berm geometry is capable of stopping a runaway truck. Results are summarised in a series of diagrams intended for use as design guidelines by practitioners and engineers.
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2.
  • Thoeni, Klaus, et al. (author)
  • Using non-smooth multi-domain dynamics to improve the safety on haul roads in surface mining
  • 2017
  • In: The V International Conference on Particle-Based Methods. Fundamentals and Applications. - Barcelona, Spain : International Center for Numerical Methods in Engineering (CIMNE). - 9788494690976 ; , s. 600-611
  • Conference paper (peer-reviewed)abstract
    • The paper presents a preliminary numerical study aimed to improve the safety on haul roads in surface mining. The interaction and collision between granular berms and ultra-class haul trucks are investigated by using non-smooth multi-domain dynamics. The haul truck is modelled as a rigid multibody system and the granular berm as a distribution of rigid particles using the discrete element method. A non-smooth dynamics approach is applied to enable stable and time-efficient simulation of the full system with strong coupling. The numerical model is first calibrated using full-scale data from experimental tests and then applied to investigate the collision between the haul truck and granular berms of different geometry under various approach conditions.
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  • Result 1-2 of 2
Type of publication
conference paper (1)
journal article (1)
Type of content
peer-reviewed (2)
Author/Editor
Servin, Martin (2)
Thoeni, Klaus (2)
Giacomini, Anna (2)
Sloan, Scott (1)
University
Umeå University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Engineering and Technology (1)

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