Applus+ IDIADA is searching for an early stage researcher in the field of experimental-numerical vibro-acoustics PhD candidate to join the NVH team and a multidisciplinary group of development engineers to work with in the H2020 Marie Sklodowska Curie Project PVNv2-
Next generation pass-by noise approaches for new powertrain vehicles.
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Project background : Tire sound for detectability and annoyance.
The candidate will investigate the main mechanisms of future noise generation and define a methodology to rank their relative contribution in term of total sound pressure level and annoyance.
Both experimental and simulation techniques will be considered as complementary tools to analyse tire noise components. The tire noise structure versus vehicle speed and tyre design will be examined so that low and high speed tyre noise components can be identified and its generation mechanism understood in more depth.
With the advent of electric vehicles (EV) and new legislation limiting maximum tire noise levels, tire noise has become an important engineering subject that presents many challenges.
It has been recognised that the quietness of EV at low speeds (below 30 km / h) presents a real risk for many road users.
Tyre noise at these speeds is negligible, which implies that, in order to make these vehicle audible, additional artificial sound has to be incorporated in these vehicles.
This has economic and noise pollution implications Tyre noise legislation also imposes restrictions on maximum tyre noise at higher speeds.
A solution for harmonising this situation would involve developing tyres with low noise level in a wide vehicle speed range but with enhanced detectability for vehicle speeds below about 30 km / h.
This would reduce the risk associated to EVs in close to accident situations and keeping noise pollution from tyres under control.
The PhD candidate will investigate links between tire parameters and psychoacoustic perception of tire-road noise by receivers with the objective to enhance the detectability and reducing the annoyance of tire noise at low speeds.
This research is inspired by the fact that tire-road noise is mainly present at higher speeds and as such cannot directly be used for warning vulnerable road users at low speeds when quiet vehicles are approaching.
By increasing the detectability at lower speeds, pedestrian safety can be enhanced.
The most innovative aspect of this project is making tires more acoustically detectable at low speeds without increasing undesirable noise annoyance.
This detectabilty is of paramount importance to keep general road users safety and vulnerable road used, like the blind, street navigation.
EU Eligibility criteria for candidates
How to apply