Toward more realistic digital twins of lunar regolith

https://u-paris.zoom.us/j/83687430794?pwd=VnAvUnBTRk56RjhDc1lHVmo0cElTdz09

ID de réunion : 836 8743 0794
Code secret : 224164


Abstract: Digital twins are fast becoming valuable tools in many disciplines; this is true in geotechnics
as well. Additionally, digital twins provide an interesting opportunity for space applications because
conducting realistic physical analog tests on Earth is very difficult due to our inability to recreate the
space environment. In this presentation I will give a brief overview of the Norwegian Geotechnical
Institute and its geotechnical testing laboratory in Oslo. I will then share about our lunar regolith
team's recent efforts to build lab-scale digital twins of lunar regolith simulants, and more recently,
Apollo 11 and Apollo 14 regolith return samples. I will discuss the various geotechnical tests we are
conducting, as well as consider why certain tests are important and what their potential applications
could be with regard to in situ resource utilization (ISRU) on the lunar surface. I will wrap up by
describing the current state of our regolith digital twins, which are built from micro- and nano-X-ray
CT data and incorporate various micromechanical physics using the 3D level-set discrete element
method (LS-DEM).