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Fall 2017 Short Course
October 31 @ 7:30 am - 3:30 pm
Dynamic Analysis of Liquefiable soils and the use of PM4Sand Model in PLAXIS
October 31, 2017 at the Columbia Tower Club, Seattle
Non-linear seismic deformation analysis on complex or critical structures on potentially liquefiable soils are often performed using numerical methods using comprehensive soil constitutive models. Well known models include the UBCSand dynamic material model and the PM4Sand model. Information that can be obtained from such models include: estimates of cyclic shear stress ratios from seismic loading, estimates of deformation and estimates of excess pore pressures.
The PM4Sand model is a stress-ratio controlled, critical-state compatible, bounding surface plasticity constitutive model developed by Boulanger and Ziotopoulou. The model was developed and implemented to approximate stress-strain responses of specific importance to geotechnical earthquake engineering and liquefaction problems. This one-day short course introduces the PM4Sand constitutive model and its use in nonlinear dynamic analyses of liquefaction during earthquakes using PLAXIS.
The topics covered include: Overview of Dynamic Analysis features in PLAXIS); Introduction to the PM4SAND model in PLAXIS and a hands-on simulation of soil lab tests using the PM4SAND model. The course will cap with a questions and answer session on dynamic analysis using PLAXIS.
The short course will benefit participants already having some level of familiarity with nonlinear dynamic analyses, nonlinear constitutive models, soil liquefaction during earthquakes, and the computer program PLAXIS. Coverage of each topic will include a review of background information and underlying fundamentals, but the focus will be more on details and procedures important to using the PM4Sand model in practice.
Participants are expected to bring a laptop computer need to install PLAXIS prior to attending the short course. Installation instructions and a USB dongle with a license will be provided.
- 7:30 – 8:30 – Registration and Breakfast
- 8:30 – 9:30 – Overview of Dynamic Analysis features in PLAXIS
- 9:30 – 10:45 – Coffee and Snack Break
- 10:45 – 11:45 – Introduction to the PM4SAND model in PLAXIS
- 11:45 – 1:00 Lunch
- 1:00 – 3:00 Hands-on simulation of soil lab tests using the PM4SAND model
- 3:00 – 3:30 Q & A
- 3:30 – 3:45 Conclusion
Dr. Ronald B.J. Brinkgreve is Manager of the Competence Centre Geo-Engineering (research manager) at Plaxis BV (MT member) and part-time Associate Professor at Delft University of Technology (TUDelft). In 1994, Ronald obtained his PhD degree from TUDelft based on the dissertation “Geomaterial Models and Numerical Analysis of Softening” after which he started working at Plaxis as senior researcher and coordinator of research and development projects.
In his position of research manager, Ronald is responsible the scientific and geotechnical backgrounds of the PLAXIS software. Together with his team of professional researchers, Ronald is responsible for the research and development of the finite element-based calculation kernels, numerical methods and soil constitutive models.
In addition, Ronald teaches in international Plaxis courses on Computational Geotechnics and maintains a large network of contacts at universities and research centres. From 2008 till 2014, Ronald has been member of the NAFEMS geotechnical committee and is author of the book “Validating Numerical Modelling in Geotechnical Engineering”. Since 2015 Ronald is (guest) member of the German DGGT working group 1.6 on Numerical Methods in Geotechnics.
Main expertise: Geotechnics, modelling of soil behaviour, constitutive modelling, numerical methods, finite element method.