Soil Deformation Models for Real-Time Simulation:
A Hybrid Approach

Daniel Holz, Thomas Beer, Torsten Kuhlen

Virtual Reality Group
RWTH Aachen University

In Proceedings of the 6th Workshop on Virtual Reality Interactions and Physical Simulation (VRIPHYS) 2009
Eurographics Association

The simulation of soil deformation in real-time is a challenging task. Realizing the strengths and weaknesses of particle and mesh-based approaches we propose a hybrid model that combines both. Together with an adaptive sampling method, which effectively reduces the number of particles in the simulation, and a selective update technique our method is applicable in real-time VR environments. Furthermore, in order to account for the high degree of dynamics in soil behavior we consider soil as non-homogeneous and account for its degree of compaction. By incorporating soil mechanical formulations in our model and considering several physically plausible parameters the presented method allows for the simulation of soil as the material empirically investigated by civil engineers and soil mechanicians for decades.

Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism - Virtual reality I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling - Physically based modeling

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