Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical DEM Examination of a Torsional Shear Test
The paper presents preliminary results of three-dimensional simulation of the pure torsional shear (PTS) test using the discrete element method with the stacked-wall technique to simulate the boundary conditions in the test. The average stress and strain components in the PTS test are presented. To investigate the stress-strain relationship inside and outside shear bands that develop during the loading, a measuring sphere is employed to monitor the localization behavior of the specimen. The evolution of porosity and coordination number in the shear zone at different locations is presented. The initiation and propagation of the shear band characterized by porosity and shear rate contour are visualized, which indicated the shear rate is a better indicator for shear-banding identification. The results demonstrate also that, based on the microparameter monitoring, the stress and strain measured in the shear zone is significantly different from boundary measurement. The paper also demonstrates that the discrete element method is an effective tool to investigate the mechanical behavior of particular materials.
Numerical DEM Examination of a Torsional Shear Test
The paper presents preliminary results of three-dimensional simulation of the pure torsional shear (PTS) test using the discrete element method with the stacked-wall technique to simulate the boundary conditions in the test. The average stress and strain components in the PTS test are presented. To investigate the stress-strain relationship inside and outside shear bands that develop during the loading, a measuring sphere is employed to monitor the localization behavior of the specimen. The evolution of porosity and coordination number in the shear zone at different locations is presented. The initiation and propagation of the shear band characterized by porosity and shear rate contour are visualized, which indicated the shear rate is a better indicator for shear-banding identification. The results demonstrate also that, based on the microparameter monitoring, the stress and strain measured in the shear zone is significantly different from boundary measurement. The paper also demonstrates that the discrete element method is an effective tool to investigate the mechanical behavior of particular materials.
Numerical DEM Examination of a Torsional Shear Test
Li, Bo (Autor:in) / Zhang, Fengshou (Autor:in) / Gutierrez, Marte (Autor:in)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 2887-2897
24.02.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
A Numerical DEM Examination of Torsional Shear Test
| British Library Conference Proceedings | 2014
A numerical examination of the hollow cylindrical torsional shear test using DEM
| Online Contents | 2014
A numerical examination of the hollow cylindrical torsional shear test using DEM
| British Library Online Contents | 2015
A numerical examination of the hollow cylindrical torsional shear test using DEM
| Springer Verlag | 2014
A numerical examination of the direct shear test
| British Library Online Contents | 2007