Skuodis Š., Markauskas D., Norkus A., Žaržojus G., Dirgėlienė N.
Testing and numerical simulation of Holocene marine sand
uniaxial compression along the Lithuanian coast
Compressibility of quartz sand from the Lithuanian coastal
area in Klaipėda environs is investigated by testing and numerical simulation,
with validation of obtained results. The shape of sand grains has been analysed
with a scanning electronic microscope (SEM). The determined morphological
parameters of sand grains are employed to create discrete models (particle
models of grains) subsequently used for sand compression test numerical
simulation via discrete element method (DEM) techniques. The background version
of DEM and the numerical time-integration algorithm are implemented in original
DEMMAT code. Compression tests have been realised by an oedometer device. Test
versus numerical simulation results have revealed a dependence of significant
compression curve character on the discretised shape of sand grains and Young’s
modulus of particles.