Premium
Simulation of the stick‐slip motion of an oscillatory roller
Author(s) -
Paulmichl Ivan,
Adam Christoph,
Adam Dietmar
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900245
Subject(s) - drum , nonlinear system , slip (aerodynamics) , finite element method , compaction , mechanics , geotechnical engineering , geology , engineering , physics , structural engineering , mechanical engineering , quantum mechanics , aerospace engineering
Abstract A three degrees‐of‐freedom (3DOF) lumped parameter model (LPM) of the oscillatory roller‐soil interaction system is presented that captures the stick‐slip motion of the drum during near‐surface compaction of non‐cohesive soils. The deformed soil below the drum is predefined as a rigid curved asymmetric guiding track (i.e. the compaction process in the soil is not simulated), supported by a vertical and horizontal Kelvin‐Voigt element, to predict also the vertical drum accelerations as observed in situ. The solution of this model, found by switching between the sets of highly nonlinear ODEs for the stick and slip phase, is compared with recorded and numerically simulated (Finite Element model) drum responses.