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Description
Today’s road traffic is characterized by an enormous effort in the consumption of space, energy, and resources. The initiative ”Pure Mobility” intends to develop a mobility system in addition to public transport based on small electric vehicles in combination with innovative roads made of water-permeable, sustainable, and resource-efficient materials. The driving resistances and in particular the rolling resistance depend on tire geometry and material. and tire-road-interaction. This study focuses on the investigation of the vehicle rolling resistance in tire-road interaction. In order to accomplish this, the commercial finite element software Abaqus is used for tire analysis, which includes tire inflation, footprint analysis, steady state rolling analysis as well as an explicit analysis step of the tire rolling on a surface. APython-based post-processing algorithm is employed for identifying the hysteresis losses in tires rolling on a rigid surface. These hysteresis losses appear due to the material behavior of the tire rubber, which is modeled using a hyperelastic material model in conjunction with a Prony-Series. A parameter study varying inflation pressure, wheel load, and translational tire velocity is conducted to check the plausibility of the developed method. The results are input to a standard automotive simulation tool to compare the energy consumption of tire-road combinations in WLTC. The rolling resistance, with the resulting energy demand, is a key factor in the design of the Pure Mobility Vehicle in combination with the Pure Mobility Road.
