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The research is focused on analyses of vehicle delays caused by pedestrian crosswalks on one-way streets. The study encompassed three particular locations of unsignalized crosswalks: on the street section between intersections, in the zone of intersection impact, and in the zone of intersection itself. The study revealed that the major impact on traffic jams is observed at a distance of 50-100 m from...
The method for the choice of rational regimes of traffic light control is developed based on the minimization of the number of violations the requirements of traffic light signals by pedestrians depending on the volume-capacity ratio of traffic lanes and control of vehicular queue on the approach to the stop-line. Assessment of rationality is carried out considering the simultaneous impact of such...
In this paper, an efficient numerical approach is proposed to maximize the minimal damping of modes in a prescribed frequency range for general viscous tuned-mass systems. Methods of decomposition and numerical synthesis are considered on the basis of the adaptive schemes. The influence of dynamic vibration absorbers and basic design elastic and damping properties is under discussion. A technique...
Accomulated exhaustion is a fairly common problem for long-distance truck and bus drivers on international routes. In case of uncompensated exhaustion, the driver is unable to overcome the resulting attention violations with will effort, which increases the probability of errors and accidents. The last claim is confirmed by the increase in the number of incidents after 7 h and especially 10 h of work...
A vehicle is a complicated system under the influence of vibration caused by an inequality of the road surface, variable speed, unbalance of the rotating elements. The main factors influencing the relaxation of threaded connections (TC) are the amplitude, frequency and gradient of vibration. Although the frequencies of these oscillations are distributed over a wide range, the general effects of dynamic...
The theory of geodesic lines according to the authors is of interest from an applied point of view. Since the movement of many types of mechanical systems, as well as bodies or particles in gravitational or electromagnetic fields, in a continuous medium often occur along trajectories that can be considered as geodesic of certain spaces or surfaces. When two surfaces are conjugated, the line of their...
During a few last decades importance of research of mechanical properties of thin plates of micro- or nano-dimension is multiplied due to their application in mikro electromechanics systems (MEMS) and nano electromechanics systems (NEMS). It is known that a surface of solid is a region with the thickness of a few atomic diameters, which have its own atomic structure and property which differs from...
The main aim of this paper is improved dynamic vibration absorber (DVA) design with taking into account MEMS. The complex vibroexitated construction is considered. Methods of decomposition and the numerical schemes synthesis are considered on the basis of new methods of modal methods. Optimuzation of complicated DVA's in view of their interaction with MEMS is under discussion
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