Optimization of damping in the passive automotive suspension system with using two quarter-car models
Zbigniew Lozia , Piotr Zdanowicz
AbstractThe paper presents the optimization of damping in the passive suspension system of a motor vehicle moving rectilinearly with a constant speed on a road with rough surface of random irregularities, described according to the ISO classification. Two quarter-car 2DoF models, linear and non-linear, were used; in the latter, nonlinearities of spring characteristics of the suspension system and pneumatic tyres, sliding friction in the suspension system, and wheel lift-off were taken into account. The smoothing properties of vehicle tyres were represented in both models. The calculations were carried out for three roads of different quality, with simulating four vehicle speeds. Statistical measures of vertical vehicle body vibrations and of changes in the vertical tyre/road contact force were used as the criteria of system optimization and model comparison. The design suspension displacement limit was also taken into account. The optimum suspension damping coefficient was determined and the impact of undesirable sliding friction in the suspension system on the calculation results was estimated. The results obtained make it possible to evaluate the impact of the structure and complexity of the model used on the results of the optimization.
|Journal series||IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X|
|Publication size in sheets||0.5|
|Conference||Międzynarodowa Konferencja Motoryzacyjna KONMOT 2016, 22-09-2016 - 23-09-2016, Kraków, Polska|
|License||Journal (articles only); published final; ; after publication|
|Score|| = 15.0, 28-11-2017, ArticleFromJournalAndMatConf|
= 15.0, 28-11-2017, ArticleFromJournalAndMatConf
|Citation count*||5 (2018-06-16)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.