# Data repository

## Content


This repository consists of data from different sources: 
- [IPG CarMaker](https://de.mathworks.com/products/connections/product_detail/carmaker.html),
- [TIMIS tire model](https://doi.org/10.1007/s38311-014-0187-y)
- ALE-FE simulation using [FEAP](http://projects.ce.berkeley.edu/feap/).

A generic limousine-type passenger car model is selected from the [CarMaker](https://de.mathworks.com/products/connections/product_detail/carmaker.html) library. 
The driving scenario consists of
- initial straight acceleration from 0 to 100 km/h,
- deceleration to 70 km/h,
- two consecutive curves (radius: 125 m) producing ca. 3 m/s² lateral acceleration.

Time histories of motion and loads were extracted from the front-left wheel ([Pirelli Powergy 225/45 R17](https://www.pirelli.com/tyres/de-de/pkw/reifenkatalog/produkt/powergy/225_45-r17) with load index 94 and speed index Y) and used to compute time- and space-resolved dynamic footprints with the [TIMIS](https://doi.org/10.1007/s38311-014-0187-y) model.

This virtual approach provides realistic transient wheel loads and boundary conditions for generating dynamic vertical load footprints and subsequent integration into ALE-based FEM simulations of the pavement structure (Bauklasse-SV according to [RStO 12/24](https://www.fgsv-verlag.de/rsto-12-24)) conducted by FEAP.

The output is stored in Hierarchical Data Format ([HDF5](https://www.hdfgroup.org/solutions/hdf5/)) as well as Visualization Toolkit format for Unstructured Grids ([VTU](https://docs.vtk.org/en/latest/vtk_file_formats/vtkxml_file_format.html)).
[HDF5](https://www.hdfgroup.org/solutions/hdf5/) files can be accessed by software tools like [HDFView](https://www.hdfgroup.org/download-hdfview/) or coding languages, e.g. Python using package [`h5py`](https://docs.h5py.org/en/stable/index.html).
With visualization engines like [ParaView](https://www.paraview.org/), [VTU](https://docs.vtk.org/en/latest/vtk_file_formats/vtkxml_file_format.html) files can be analyzed.

### file ``FEAP_ML-ALE_Bauklasse-SV.h5``
extracted [FEAP](http://projects.ce.berkeley.edu/feap/) simulation results of the pavement structure (Bauklasse-SV according to [RStO 12/24](https://www.fgsv-verlag.de/rsto-12-24))

### file ``FEAP_ML-ALE_Bauklasse-SV.zip``
compressed work directory of the [FEAP](http://projects.ce.berkeley.edu/feap/) simulation containing [FEAP](http://projects.ce.berkeley.edu/feap/) input, log, output and plot files (Bauklasse-SV according to [RStO 12/24](https://www.fgsv-verlag.de/rsto-12-24))

### file ``TIMIS_Pirelli_Powergy_22545R17.h5``
output file of [TIMIS](https://doi.org/10.1007/s38311-014-0187-y) (tire footprint) using boundary conditions of [CarMaker](https://de.mathworks.com/products/connections/product_detail/carmaker.html) (vehicle)

## References

The data generation as well as the underlying methods, models and software are described in 

May, M.; Anantheswar, A.; Yordanov, V.; Derakhi, E., Hartung, F. Wollny, I.; Eckstein, L.; Kaliske, M.:
Incorporation of a Viscoelastic-Elastoplastic Material Model for Asphalt based on the Multiscale Microlayer Model into an ALE Formulation for Pavement Structures Considering Dynamic Tire Loadings, 
(submitted 2025),
[DOI: 10.2139/ssrn.5519461](https://doi.org/10.2139/ssrn.5519461)