Railway applications. Ride comfort for passengers. Measurement and evaluation

1999 ◽  
Keyword(s):  
Ride Comfort ◽  
Measurement And Evaluation

Review of Measurement and Evaluation of Health Education.

1989 ◽  
Vol 34 (4) ◽  
pp. 411-411
Author(s):  
No authorship indicated
Keyword(s):  
Health Education ◽  
Measurement And Evaluation

Review of Measurement and Evaluation of Musical Experiences.

1989 ◽  
Vol 34 (6) ◽  
pp. 611-611
Author(s):  
No authorship indicated
Keyword(s):  
Measurement And Evaluation

Measurement and evaluation of perceived stress among students: What supports in an university context?

2010 ◽  
Author(s):  
M. P. Tavolacci ◽  
S. Grigioni ◽  
H. Villet ◽  
P. Dechelotte ◽  
J. Ladner
Keyword(s):  
Perceived Stress ◽  
Measurement And Evaluation

Techniques for Determining the Parameters of a Two-Dimensional Tire Model for the Study of Ride Comfort

1997 ◽  
Vol 25 (3) ◽  
pp. 187-213 ◽  
Author(s):  
F. Mancosu ◽  
G. Matrascia ◽  
F. Cheli
Keyword(s):  
Physical Properties ◽  
Ride Comfort ◽  
Dynamic Test ◽  
Longitudinal Direction ◽  
Tire Model ◽  
Rigid Ring ◽  
Ring Model ◽  
Mass Moment ◽  
A New Technique ◽  
And Performance

Abstract A rigid ring model of the tire for the study of in-plane dynamics and a new technique for determining the parameters of the model are presented in this paper. This model can be used for studying the comfort of vehicles, problems of driving, and braking problems in the longitudinal direction. Comparison with finite element models shows that the rigid ring model of the tire is capable of describing the in-plane eigenmode shapes in the frequency range of 0–130 Hz. The well-known “brush model,” integrated into the tire model, is introduced to take into account the slide phenomena in the contact patch. The parameters of the model can be correlated with the physical properties of the tire so that designers can take advantage of such a correlation in the development of new tires in terms of time, cost, and performance. The technique used to determine the parameters of the model for some automobile tires include the direct measurements of some physical properties (mass, moment of inertia, stiffness) and a method of identification applied on the results from a dynamic test. The model is able to predict experimental data in terms of natural frequencies and relative dampings. Results from the application of this technique on two tires are reported.

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