Purpose
This paper aims to deal with the development of a software tool to simulate and study vehicle – road interaction (VRI) to quantify the forces induced and energy released from vehicles to the road pavement, in different vehicle motion scenarios, and the energy absorbed by the road surface, speed reducers or a specific energy harvester surface or device. The software tool also enables users to quantify the energetic efficiency of the process.
Design/methodology/approach
Existing software tools were analysed and its limitations were identified in terms of performing energetic analysis on the interaction between the vehicle and the road pavement elements, such as speed reducers or energy harvest devices. The software tool presented in this paper intends to overcome those limitations and precisely quantify the energy transfer.
Findings
Different vehicle models and VRI models were evaluated, allowing to conclude about each model precision: bicycle car model has a 60 per cent higher precision when compared with quarter-car model, and contact patch analysis model has a 67 per cent higher precision than single force analysis model. Also, a technical study was performed for different equipment surface shapes and displacements, concluding that these variables have a great influence on the energy released by the vehicle and on the energy harvested by the equipment surface.
Originality/value
The developed software tool allows to study VRI with a higher precision than existing tools, especially when energetic analyses are performed and when speed reduction or energy harvesting devices are applied on the pavement.
With the growing need for alternative energy sources, research into energy harvesting technologies has increased considerably in recent years. The particular case of energy harvesting on road pavements is a very recent area of research, with different technologies having been developed for this purpose. However, none of them have presented high conversion efficiency rates nor technical or economic viability. Looking at other renewable energy technologies, the inclusion of not only electrical but also in some cases mechanical energy storage units has led to an increase in global efficiency and, consequently, economic viability. This paper deals with the technical study of the integration of mechanical energy storage systems in a road pavement energy harvesting hydraulic device with mechanical actuation in order to evaluate the impact on global efficiency. The main goal is to quantify the efficiency of the energy storage and the overall efficiency of the system, including the harvesting, transmission, and conversion efficiency rate, comparing it to scenarios where no storage system is used. Finally, the conclusions on the performance of each system are presented.
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