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The investigation of rail vehicle running dynamics plays an important role in the more than 200 year development of railway vehicles and infrastructure. Currently, there are a number of new requirements for rail transport associated with the reduced environmental impact, energy consumption and wear, whilst increasing train speed and passenger comfort. Therefore, the running dynamics of rail vehicles is still a research topic that requires improved simulation tools and experimental procedures. The book focuses on the current research topics in railway vehicles running dynamics. Special attention is given to high-speed railway transport, acoustic and vibrational impact of railway transport to the surroundings, optimization of energy supply systems for railway transport, traction drives optimization and wear of wheels and rails.
Technology: general issues --- History of engineering & technology --- Environmental science, engineering & technology --- wear --- turnout --- rail --- stiffness --- high-speed --- dynamic characteristics --- traction drive system --- direct torque control --- electromechanical coupling modeling --- variable conditions --- rail vehicle --- rail infrastructure --- threshold effect --- dynamics --- numerical simulations --- testing --- optimal controller --- traction drive --- vector control system --- railway noise --- high-speed railways --- environmental impact --- energy saving --- control by forecast --- power limit of consumption --- railway transport infrastructure object --- simulation in the daily cycle --- n/a
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This Special Issue was launched to promote a subject that is deserving of more attention: the study of new metrics, indicators or evaluation methods for noise exposure, and the relationship of noise with annoyance or other health effects, thus not relying only on an average noise exposure measure. This Special Issue on the theme of the New Indicators for the Assessment and Prevention of Noise Nuisance has attracted the interest of authors from all over the world, with the publication of two reviews and two communications, as well as original research papers. Progress has been made in the investigated topic; however, it is still necessary to increase the awareness of the population, both in geographical terms and for workers in specific sectors, such as the marine industry. It emerged that it is essential to carry out future studies that distinguish better between different sound sources with respect to their sound quality in terms of frequency, time pattern (fluctuation, emergence), and psychoacoustic indices, because a differential human reaction to sound sources is increasingly evident. More longitudinal studies are required. However, cross-sectional studies employing a more detailed soundscape description (including background) by competing sound indices are also useful to further the required knowledge to understand the human response in terms of the broad spectrum of potential adverse effects on health and quality of life.
Technology: general issues --- History of engineering & technology --- sound emergence --- legislation --- annoyance --- measurement --- prediction --- uncertainty --- audibility --- signal-to-noise ratio --- sound pressure level --- field measurements --- spectrum analysis --- interior noise and vibration of vehicle --- COVID-19 --- noise --- soundscape --- metrics --- indicators --- descriptors --- sound --- lockdown --- Twitter --- geolocation --- noise classification --- seafarers --- acoustic pollution --- noise onboard ship --- health impact --- environmental pollution --- noise survey --- hypertension --- environmental noise --- railway noise --- recreational noise --- airport noise --- road traffic noise --- blood pressure --- noise annoyance --- diastolic blood pressure --- helicopter cabin --- noise levels --- noise reduction --- acoustic evaluation --- IAR Puma 330 --- ultrasound --- active noise control --- adjustable PAL --- quiet areas --- macro-temporal pattern --- noise indicator --- cognitive performance --- Stroop task --- listening experiment --- port noise --- noise sources --- noise mapping --- noise mitigations --- noise modeling --- ship noise --- sustainable management --- noise exposure prevention --- noise measurements --- research projects --- noise indicators --- noise metrics --- psychoacoustic --- nuisance --- sleep disturbance --- peak noise --- impulsive events --- health related quality of life --- health effects
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