TY  - JOUR
AU  - Šalinić, Slaviša
AU  - Obradović, Aleksandar
AU  - Dunjić, Momčilo
AU  - Sekulić, Dragan
AU  - Lazarević, Željko
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2838
AB  - Free vibration of an Euler-Bernoulli beam with rigid bodies connected to the beam ends by both revolute joints and torsional springs is considered. The mass centers of rigid bodies have both the transverse and the axial eccentricity relative to the neutral axis of the undeformed beam. The coupling of the partial differential equations of axial and bending vibrations of the beam due to boundary conditions is considered. The frequency equation and the mode shape orthogonality condition of the system are derived. In order to illustrate the effect of the transverse and the axial eccentricity on the vibration behavior of the beam, a numerical example is provided.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Zamm-Zeitschrift Fur Angewandte Mathematik Und Mechanik
T1  - Contribution to the free vibration problem of a free-free beam with large end masses
EP  - 847
IS  - 5
SP  - 840
VL  - 98
DO  - 10.1002/zamm.201600300
ER  - 

@article{
author = "Šalinić, Slaviša and Obradović, Aleksandar and Dunjić, Momčilo and Sekulić, Dragan and Lazarević, Željko",
year = "2018",
abstract = "Free vibration of an Euler-Bernoulli beam with rigid bodies connected to the beam ends by both revolute joints and torsional springs is considered. The mass centers of rigid bodies have both the transverse and the axial eccentricity relative to the neutral axis of the undeformed beam. The coupling of the partial differential equations of axial and bending vibrations of the beam due to boundary conditions is considered. The frequency equation and the mode shape orthogonality condition of the system are derived. In order to illustrate the effect of the transverse and the axial eccentricity on the vibration behavior of the beam, a numerical example is provided.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Zamm-Zeitschrift Fur Angewandte Mathematik Und Mechanik",
title = "Contribution to the free vibration problem of a free-free beam with large end masses",
pages = "847-840",
number = "5",
volume = "98",
doi = "10.1002/zamm.201600300"
}

Šalinić, S., Obradović, A., Dunjić, M., Sekulić, D.,& Lazarević, Ž.. (2018). Contribution to the free vibration problem of a free-free beam with large end masses. in Zamm-Zeitschrift Fur Angewandte Mathematik Und Mechanik
Wiley-V C H Verlag Gmbh, Weinheim., 98(5), 840-847.
https://doi.org/10.1002/zamm.201600300

Šalinić S, Obradović A, Dunjić M, Sekulić D, Lazarević Ž. Contribution to the free vibration problem of a free-free beam with large end masses. in Zamm-Zeitschrift Fur Angewandte Mathematik Und Mechanik. 2018;98(5):840-847.
doi:10.1002/zamm.201600300 .

Šalinić, Slaviša, Obradović, Aleksandar, Dunjić, Momčilo, Sekulić, Dragan, Lazarević, Željko, "Contribution to the free vibration problem of a free-free beam with large end masses" in Zamm-Zeitschrift Fur Angewandte Mathematik Und Mechanik, 98, no. 5 (2018):840-847,
https://doi.org/10.1002/zamm.201600300 . .

TY  - JOUR
AU  - Sekulić, Dragan
AU  - Dedović, Vlastimir
AU  - Rusov, Srđan
AU  - Obradović, Aleksandar
AU  - Šalinić, Slaviša
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2408
AB  - The paper defines "equal oscillatory comfort zones" as a novel concept in the sphere of the bus vertical dynamics. Oscillatory zones are determined using the original and validated oscillatory model of the intercity bus and comfort criteria according to the international ISO 2631/1997 standard requirements. The bus spatial oscillatory model with 65 degrees of freedom (DOF) was built in the ADAMS/View module of the multibody software package MSC.ADAMS. The model was excited by two different real road surfaces: poor asphalt-concrete and good asphalt-concrete pavements, registered at the speed of 64 km/h and 90 km/h respectively. It was found by simulation that oscillatory zones with different comfort assessments exist in the bus. The most comfortable oscillatory zone is in the middle part of the bus (between the front and the rear axle), whereas the least comfortable oscillatory zone is on the rear bus overhang. For the purpose of the ride comfort harmonization, using Design of Experiments (DOE) analysis, new oscillatory parameters are proposed for passenger seats which do not ensure satisfactory oscillatory comfort level. It is concluded that harmonization of oscillatory comfort for all bus passengers could be achieved for good asphalt-concrete excitation. For the poor road excitation it is possible to achieve significant improvement of comfort, especially for the assistant driver and passengers in the bus rear overhang. On a poor asphalt-concrete pavement, by using the proposed seat oscillatory parameters, the allowed exposure time for vertical whole body vibration would be considerably extended. Relevance to industry: Oscillatory comfort has a particular importance for users of intercity buses traveling longer distances. Comfort assessment of each bus user and mapping of comfort zones can indicate the individual seat and group of the seats on which the oscillatory comfort is reduced. Proper selection of seat oscillatory parameters can improve users comfort. Results of such an analysis can significantly help bus designers and manufacturers in order to improve and harmonize oscillatory comfort on the whole vehicle platform.
PB  - Elsevier Science Bv, Amsterdam
T2  - International Journal of Industrial Ergonomics
T1  - Definition and determination of the bus oscillatory comfort zones
EP  - 339
SP  - 328
VL  - 53
DO  - 10.1016/j.ergon.2016.04.003
ER  - 

@article{
author = "Sekulić, Dragan and Dedović, Vlastimir and Rusov, Srđan and Obradović, Aleksandar and Šalinić, Slaviša",
year = "2016",
abstract = "The paper defines "equal oscillatory comfort zones" as a novel concept in the sphere of the bus vertical dynamics. Oscillatory zones are determined using the original and validated oscillatory model of the intercity bus and comfort criteria according to the international ISO 2631/1997 standard requirements. The bus spatial oscillatory model with 65 degrees of freedom (DOF) was built in the ADAMS/View module of the multibody software package MSC.ADAMS. The model was excited by two different real road surfaces: poor asphalt-concrete and good asphalt-concrete pavements, registered at the speed of 64 km/h and 90 km/h respectively. It was found by simulation that oscillatory zones with different comfort assessments exist in the bus. The most comfortable oscillatory zone is in the middle part of the bus (between the front and the rear axle), whereas the least comfortable oscillatory zone is on the rear bus overhang. For the purpose of the ride comfort harmonization, using Design of Experiments (DOE) analysis, new oscillatory parameters are proposed for passenger seats which do not ensure satisfactory oscillatory comfort level. It is concluded that harmonization of oscillatory comfort for all bus passengers could be achieved for good asphalt-concrete excitation. For the poor road excitation it is possible to achieve significant improvement of comfort, especially for the assistant driver and passengers in the bus rear overhang. On a poor asphalt-concrete pavement, by using the proposed seat oscillatory parameters, the allowed exposure time for vertical whole body vibration would be considerably extended. Relevance to industry: Oscillatory comfort has a particular importance for users of intercity buses traveling longer distances. Comfort assessment of each bus user and mapping of comfort zones can indicate the individual seat and group of the seats on which the oscillatory comfort is reduced. Proper selection of seat oscillatory parameters can improve users comfort. Results of such an analysis can significantly help bus designers and manufacturers in order to improve and harmonize oscillatory comfort on the whole vehicle platform.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "International Journal of Industrial Ergonomics",
title = "Definition and determination of the bus oscillatory comfort zones",
pages = "339-328",
volume = "53",
doi = "10.1016/j.ergon.2016.04.003"
}

Sekulić, D., Dedović, V., Rusov, S., Obradović, A.,& Šalinić, S.. (2016). Definition and determination of the bus oscillatory comfort zones. in International Journal of Industrial Ergonomics
Elsevier Science Bv, Amsterdam., 53, 328-339.
https://doi.org/10.1016/j.ergon.2016.04.003

Sekulić D, Dedović V, Rusov S, Obradović A, Šalinić S. Definition and determination of the bus oscillatory comfort zones. in International Journal of Industrial Ergonomics. 2016;53:328-339.
doi:10.1016/j.ergon.2016.04.003 .

Sekulić, Dragan, Dedović, Vlastimir, Rusov, Srđan, Obradović, Aleksandar, Šalinić, Slaviša, "Definition and determination of the bus oscillatory comfort zones" in International Journal of Industrial Ergonomics, 53 (2016):328-339,
https://doi.org/10.1016/j.ergon.2016.04.003 . .