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WITHDRAWN Ground Truthing Multidimensional Site Response Analyses Using Ls-Dyna

Description: 

WITHDRAWN A current research study is being conducted with collaborators from research and industry to ground truth multidimensional GRAs at the Treasure Island Downhole Array (TIDA). A large-scale, site-specific 3D subsurface model is now available for this site and multidimensional GRAs have proven that site response recorded in the borehole array is influenced by subsurface spatial variability at distances over 1 km away. Several teams have performed multidimensional GRAs for the TIDA site using different commercial and open-source software (e.g., OpenSees, Sesimo-VLab, FLAC, LS-DYNA). This study covers the methodologies and outcomes obtained using the software package LS-DYNA for the various analysis cases considered in the wider collaborative study. Special attention is given to Rayleigh damping implementation techniques, impacts of element formulations, hourglass control, boundary conditions, and analysis runtimes for a given hardware set. A discussion of the various analytical results and the unique considerations associated with leveraging LS-DYNA for GRA is provided.

Session: Ground Truthing Multidimensional Site Response Analyses at Borehole Array Sites

Type: Oral

Date: 4/20/2023

Presentation Time: 05:00 PM (local time)

Presenting Author: Kevin Stanton

Student Presenter: No

Invited Presentation: 

Authors