Papers by Danut Ciubotaru
After the year 1990, the car park and also the number of drivers have almost tripled, being in a ... more After the year 1990, the car park and also the number of drivers have almost tripled, being in a complete contradiction with the slow development of the infrastructure, leading to an increase in the percent of material and human damages as a result of traffic accidents. As far as Romania is concerned at the level of the European Union, during 2001-2010 recorded a 25% increase of the number of deceased persons, which places our country on the last but one place in the European top.
Braking process of a vehicle is complex, giving possibility to the driver to reduce car’s speed o... more Braking process of a vehicle is complex, giving possibility to the driver to reduce car’s speed or to stop it at big speed in a short distance. Using the diagrams registered for the different working conditions, defined accordingly with the experimental plan, there have been analyzed the values of deceleration, variation of speed and the covered space for each specified moment of braking. As result of the experimental researches, we have reached the conclusion that a good behavior at cars braking is registered when the diagrams of deceleration variation in relation with braking time have a symmetric shape.
The authors present in this study the useful criteria in conceiving, building and exploiting vehi... more The authors present in this study the useful criteria in conceiving, building and exploiting vehicle tires in hydroplaning, that reduce the number of traffic accidents. The analytical expressions presented here enable us mathematical determination of tire reaction on a wet road.
Uploads
Papers by Danut Ciubotaru