Parameterization: Varying Model Geometry

For this example, we create a simple model of a tunnel interactively using the 2D extrusion tool. The tool's data and the resulting zones are shown below. Note that the points used for tunnel are marked, in green, as a group named Tunnel.

Using this as a template, we use the State Record pane to create a data file named create_tunnel.dat that reproduces this geometry. Then we can create a parameterized data file that allows us to test various tunnel locations while only changing one value (tunnel_height defined on line 3).

As seen on line 8, this example demonstrates the ability for FISH to be substituted for a value anywhere within a data file.

Note that things like material properties, tunnel cross-section, and pretty much anything involved in the model can be parameterized in such a fashion – sometimes just with parameter replacement in the data file as seen here, sometimes with the use of FISH functions (as seen above in the Model Creation section). This allows quick and easy exploration of the parameter space of a model that requires set up once and only once.


Latest News
  • Workshop: The “Big Five”: Numerical Modeling of Cave Mining This MassMin2020 workshop will review caveability, ground subsidence, infrastructure stability, fragmentation, and gravity flow associated...
    Read More
  • 2020 H. Bolton Seed Lecture: Open Issues about Soil Liquefaction Dr. Bruce L. Kutter delivered the 2020 H. Bolton Seed Lecture at Geo-Congress 2020 in...
    Read More
  • Webinar: Using Rigid Blocks in PFC This webinar will provide a brief overview of PFC modeling using convex rigid blocks, including...
    Read More

Upcoming Events
1 Dec
WEBINAR: What’s New in 3DEC Version 7
This webinar is for people who have used 3DEC before and are interested in the latest developments.... Read More
4 Dec
Analyses of Embankment Dams and Slopes Using FLAC
This hands-on, virtual training course is 16 hours total, spread over four days in a 1.5-week period, and covers the analysis of embank... Read More
8 Mar
FLAC3D Remote Introductory Training - Online!
Three days of general feature training addressing basic concepts and recommended procedures for geotechnical numerical analysis.... Read More