New High Performance Stiff and Deformable Digital Roads
for FTire
Gerald Hofmann, Dr. Michael Gipser, Cosin Scientific
Software
The paper describes several new approaches for rigid and
deformable road surface specification and evaluation.
Main topic is the description of massively parallel grid
evaluations by using the GPU (Graphic Processing Unit) as
a coprocessor. State-of-the-art detailed tire models like
FTire require a huge number of road surface height evaluations.
Obviously, speeding up these computations can significantly
reduce the overall tire model evaluation time.
Another, related application of GPU technology is the particle
road model COSIN/prm, being a new approach to describe soft
soil surfaces by DEM (Discrete Element Modelling) methods.
COSIN’s implementation of a large scale particle-based
road model using parallel and asynchronous evaluation is presented.
Finally, new user-friendly options of FTire/roadtools are
presented, allowing to specify RGR roads, for evaluation with
the method mentioned above, based upon analytical description,
gray-scale or colored bitmaps, and arbitrary 2D power spectrum
density (PSD) specification.
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