Comments by Boris Jeremic, Professor, CEED, University of California, Davis, CA, USA jeremic@ucdavis.edu +1-530-754-9248 http://sokocalo.engr.ucdavis.edu/~jeremic Space for comments on provided web pages was not enough so I provide my comments here: http://sokocalo.engr.ucdavis.edu/~jeremic/for_SimCenter_May2020/Boris_Jeremic_Comments_09May2020.txt ---------------------------------------- Section 5. List of Software Tools Incomplete description of available software for geotechical and structural systems, additional USA based software is available, and there is no mention of software tools out of USA? Missing software tools from France, Japan, China ---------------------------------------- 5. List of Software Tools 5.2 Response Estimation (table on page 114) Name: Real ESSI Simulator http://real-essi.us/ Category: Structural, Geotechnical, Coupling with CFD Public Access: No public access to sources. - OpenSource source code access for collaborators and clients - Public access to the system on Amazon Web Services (AWS) computers - Public access to program executables, sequential and parallel, through: http://real-essi.us Operating System: Linux, however on AWS it is accessible from Windows, Mac OS, Unix/Linux, Android... DesignSafe: Work underway to install it on TACC sequential and parallel computers, Comment: Structural, Geotechnical, Stochastic... Full Verification suite Coupled with CFD, OpenFOAM see more details at: http://real-essi.us ---------- 5.4 Uncertainty Quantification Real-ESSI, same as above, available within Real-ESSI is: stochastic elastic plastic finite element method ---------------------------------------- section: 1.3.2 Systems and Software for Liquefaction Assessment Real-ESSI can model liquefaction quite well, there are a number of papers that describe that effort: Panagiota Tasiopoulou, Mahdi Taiebat, Nima Tafazzoli, Boris Jeremic. On Validation of Fully Coupled Behavior of Porous Media using Centrifuge Test Results. Journal of Coupled Systems, Vol 4, No. 1, pp 37-65, 2015. Panagiota Tasiopoulou, Mahdi Taiebat, Nima Tafazzoli, Boris Jeremic, Solution Verification Procedures for Modeling and Simulation of Fully Coupled Porous Media: Static and Dynamic Behavior. Journal of Coupled Systems, Vol 4. No. 1, pp 67-98, 2015. Mahdi Taiebat, Boris Jeremic. Yannis F. Dafalias, Amir M. Kaynia, and Zhao Cheng. Propagation of Seismic Waves through Liquefied Soils. Soil Dynamics and Earthquake Engineering, No. 30, pp 236-257, 2010. Boris Jeremic, Zhao Cheng, Mahdi Taiebat and Yannis Dafalias. Numerical Simulation of Fully Saturated Porous Materials. International Journal for Numerical and Analytical Methods in Geomechanics, Volume 32, No. 13, pp 1635-1660, 2008. ---------------------------------------- Quite a bit of work in direct stochastic finite element modeling in Europe (Liverpool, Hanover, Braunschweig) and in the USA... ---------------------------------------- Missing description of work on Intrusive solution of the stochastic inelastic problem, rather than Monte Carlo! ---------------------------------------- section: 2.2 Geotechnical Systems Missing to mention Real-ESSI Simulator (http://real-essi.us) that has extensive geotechnical modeling capabilities, please see: http://real-essi.us. For example Real-ESSI can interface with SW4, use SW4 wave fields for accurate input into SSI models! See papers: José A. Abell, Nebojsa Orbovic, David B. McCallen and Boris Jeremic. Earthquake Soil Structure Interaction of Nuclear Power Plants, differences in response to 3-D, 3×1-D, and 1-D excitations. Earthquake Engineering and Structural Dynamics, 47 (6), 2018. Boris Jeremic, Nima Tafazzoli, Timothy Ancheta, Nebojsa Orbovic and Andrei Blahoianu. Seismic behavior of NPP structures subjected to realistic 3D, inclined seismic motions, in variable layered soil/rock, on surface or embedded foundations. Nuclear Engineering and Design, Vol, 265, Pages 85-94, 2013. For liquefaction modeling, see papers mentioned above... No mention of verification and validation efforts! ----------------------------------------