Computational Geomechanics

Krishna Kumar, krishnak@utexas.edu

geoelements.org

UT Geotech Grad Open House
9th March 2021

Oso landslide (2014)

8 million cubic meters of glacial deposits and water-filled debris material transported to a distance of 1 km (Haugerud., 2014).

Oso landslide (2014)

Think hard, and go watch Disney movies!

Disney's Frozen: Snow simulation

Sungkwan Park et al (2014)

Oso landslide simulation

Landslide mechanism

Discrete Element Method

Grain-scale simulation of soil

Collapse on an inclined plane

aspect ratio 'a' of 6 on a slope of 5*

Loose v dense: Initiation phase

Loose

Dense

Pore-pressure distribution along the failure plane during initiation.

Super computing

LBM - DEM a = 0.8 & 10,000 particles

LBM Nodes = 50 Million : DEM grains = 10000 discs
Run-time = 4 hours
Speedup = 125x on a Pascal P100

MPM modeling of Kaikoura landslide in New Zeland

Thiago Ordonho Araujo
PhD Student

Discrete Element modeling of Torisonal Shear

DEM simulation

Rei Hosseini
PhD Student

Unsaturated modeling

Qiuyu (Amber) Wang
PhD Student

CNN Full Waveform Inversion: Architecture

Vantassel et al., (2021)

CNN Full Waveform Inversion: Training

CNN Full Waveform Inversion

CNN prediction of subsoil profile

Learning to Simulate

Thank you!
and
Hook 'em!