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2 Machine Dynamics Research

2 2012

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Identification of Motor-Car Movement Curvilinear Trajectory Using Computer Simulation Basing on Real Road Accidents Analysis

Kędziora K., Lewandowski A., Waluś K. J.

Machine Dynamics Research

2012

Vol. 36, No. 1

99-107

Tyres friction traces shapes constitute the basic input parameter for computer simulations of movement reconstruction before and after vehicle collision. Traces often include encoded, possible to readout, information concerning movement dynamics of a car that was marking them. This information may concern also both if the vehicle was intensively braked or not, and what trajectory it was moving before or after arriving the place of collision. In this paper there are presented two selected cases of reconstruction of real road accidents for which issuing of uncompromising opinion and ruling would not be possible without previous identification of tyres traces outlines on the roadway.

Comparative Analysis of Vehicle Trajectory Motion with the Curvilinear Contour of Track on the Road Surface

Waluś K. J., Lewandowski A., Kędziora K., Kurek J., Anioła M.

Machine Dynamics Research

2012

Vol. 36, No. 1

116-121

Kinematic features describing the curvilinear track of vehicle make significant problem in analysis of braking, accelerating and also arc driving processes. Recognized features of motion during measurement can be used in analysis of instantaneous values of accelerations, speeds and covered path. Research of the curvilinear track on road generating are oriented for come to know parameters for vehicle movement in given conditions and type of road. In testing grounds were used special measuring device making possible linkage of motion parameters of vehicle with geometrical features formed by track. The paper describes measuring device for three-dimensional canvassing and archiving of motion parameters of vehicle and also presents comparative analysis of the curvilinear contour of track from tyre with vehicle trajectory motion.