3D Earthquake Ground Motion Modeling

Spatially varying inclined motion field by incident SV wave with different frequencies
free_field_frequency.gif


Spatially varying inclined motion field by incident SV wave with different inclinations
free_field_inclination.gif


Physics-based regional earthquake wavefield modeling
SW4Wave.gif

[Courtesy of Dr. Artie Rodgers]


3D Nonlinear Earthquake Soil Structure Interaction

Small modular reactor (SMR) under incident SV wave with different frequenciess
SW4Wave.gif


Small modular reactor (SMR) under incident SV wave with different inclinations
SW4Wave.gif


Comparative response of SMR under 3D and simplified 3x1D excitations
3Dvs1D_deconvolution.gif


Nonlinear dynamic response of nuclear power plant (NPP) and small modular reactor (SMR) under 3D seismic motions
NPP-Nonlinear-Effects.gif SMR_Nonlinear.gif

Earthquake Soil Structure Fluid Interaction

Water break within solid box
SFI.gif

Box sloshing driven by harmonic excitation
first_mode.gif

[First sloshing mode] third_mode.gif

[Third sloshing mode]

experiment_mode.jpg

[Experiment validation: (a) First sloshing mode (b) Third sloshing mode]

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Time Domain Intrusive Probabilistic Seismic Risk Analysis

Novel framework for time domain probabilisitc seismic risk analysis (PSRA)
experiment_mode.jpg