vehicle4em

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Table of content

• 1. Introduction
• 2. Screenshot
• 3. Download instructions
• 4. How to cite

1. Introduction

This repository contains CAD models of vehicles and volumetric meshes (composed of tetrahedra) in .vtu format, intended for use in electromagnetic simulations. For example, the following image depicts a Fiat 500 exposed to magnetic fields generated by a wireless power transfer system:

2. Screenshot

Fiat 500

BMW X6

IVECO Daily

Mini

3. Download instructions

3.1 CAD Models

We provide the CAD models as STEP files, a standardized format used for exchanging 3D models between different CAD software. The files can be accessed via this link.

If any issues arise when using the CAD models, please do not hesitate to contact the authors by email using this link:

• contact the authors

3.2 Unstructured meshes (vtu file format)

You can access a shared folder using this link, which contains four .vtu files representing the unstructured mesh of the corresponding vehicles. The .vtu format is an XML-based representation of unstructured grid datasets used by the Visualization Toolkit (VTK). As part of the VTK XML family, it provides a structured, extensible, and portable means of encoding scientific data.

It is straightforward to visualize the models using the free and open source software Paraview. If you need to extract the data, the shared folder also includes a Python script named import_mesh.py, which can be used to extract point coordinates, cell connectivity, and the associated data fields, including object codes. This script requires the meshio module. Below, you can see the content of the script used to extract data for the Fiat 500 model.

import meshio

# import mesh
mesh = meshio.read("500.vtu")

# get points
points = mesh.points

# get connectivity
connectivity = mesh.cells[0].data

# get object codes
obj = mesh.cell_data['obj'][0]

4. How to cite

If you use these models, please consider citing:

• this repository
• the following paper:

F. Freschi, L. Giaccone, V. Cirimele, and L. Solimene, “Vehicle4em: a collection of car models for electromagnetic simulation,” in Proc. IEEE Wireless Power Transfer Conf. & Expo (WPTCE), Rome, Italy, 2025

@inproceedings{vehicle4em2025,
  author    = {Fabio Freschi and Luca Giaccone and Vincenzo Cirimele and Luigi Solimene},
  title     = {{Vehicle4em: a collection of car models for electromagnetic simulation}},
  booktitle = {Proceedings of the IEEE Wireless Power Transfer Conference and Expo (WPTCE)},
  year      = {2025},
  address   = {Rome, Italy},
  publisher = {IEEE}
}