Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Khaled E. Zaazaa"'
Publikováno v:
Acta Mechanica. 223:1707-1721
In the finite segment method, the dynamics of a deformable body is described using a set of rigid bodies that are connected by elastic force elements. This approach can be used, as demonstrated in this investigation, in the simulation of some rail mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a6809f4788fd9c80a76b5a54869de6d
https://doi.org/10.1007/s00707-012-0630-3
https://doi.org/10.1007/s00707-012-0630-3
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics. 225:111-125
Spiral sections are used in the construction of railroad tracks in order to achieve a smooth change in the curvature. In order to satisfy the kinematic conditions at the position, velocity, and acceleration levels in railroad vehicle dynamics computa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1372f6639960577da16ab48f2566b9e
https://doi.org/10.1177/1464419311406626
https://doi.org/10.1177/1464419311406626
Publikováno v:
Journal of Mechanical Design. 128:1130-1140
The effect of the geometry of a wheel profile that allows only a single point of contact with the rail is investigated in this study. The local geometric properties of this profile are compared with the local geometric properties of a profile that al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa5f22e08700c06e8e54f1f0721d0a9b
https://doi.org/10.1115/1.2214739
https://doi.org/10.1115/1.2214739
Publikováno v:
Nonlinear Dynamics. 40:169-193
In this investigation, four nonlinear dynamic formulations that can be used in the analysis of the wheel/rail contact are presented, compared and their performance is evaluated. Two of these formulations employ nonlinear algebraic kinematic constrain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::641825d40009510fe8c0d043414afa14
https://doi.org/10.1007/s11071-005-5200-y
https://doi.org/10.1007/s11071-005-5200-y
Publikováno v:
Journal of Sound and Vibration. 269:295-325
In this investigation, a new formulation for the wheel/rail contact problem based on the elastic force approach is presented. Crucial to the success of any elastic force formulation for the wheel/rail contact problem is the accurate prediction of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18b44be4e0fc93bf4581f85ad4ba2f6d
https://doi.org/10.1016/s0022-460x(03)00074-9
https://doi.org/10.1016/s0022-460x(03)00074-9
Publikováno v:
2011 Joint Rail Conference.
In the finite segment method, the dynamics of a deformable body is described using a set of rigid bodies that are connected by elastic force elements. This approach can be used, as demonstrated in this investigation, in the simulation of some rail mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f285ba234ac2fd4624a40d61bd790776
https://doi.org/10.1115/jrc2011-56099
https://doi.org/10.1115/jrc2011-56099
Publikováno v:
Journal of Computational and Nonlinear Dynamics. 5
The objective of this study is to examine the geometric description of the spiral sections of railway track systems, in order to correctly define the relationship between the geometry of the right and left rails. The geometry of the space curves that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fa77a9939c5153ea04dc5d5f8cf16d9
https://doi.org/10.1115/1.4000254
https://doi.org/10.1115/1.4000254
Autor:
Ali Tajaddini, Magdy El-Sibaie, Khaled E. Zaazaa, Brian Marquis, Erik Curtis, Timothy P. Martin, Brian Whitten
Publikováno v:
2009 Joint Rail Conference.
The dynamic response of a railroad vehicle traveling at speed over track deviations can be predicted by using multibody simulation codes. In this case, the solution of nonlinear equations of motion and extensive calculations based on the suspension c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd3d3f3a66de4ed48d9bac71670e4b80
https://doi.org/10.1115/jrc2009-63046
https://doi.org/10.1115/jrc2009-63046
Autor:
Brian Marquis, Brian Whitten, Ali Tajaddini, Magdy El-Sibaie, Erik Curtis, Khaled E. Zaazaa, Ahmed A. Shabana
Publikováno v:
2009 Joint Rail Conference.
Accurate prediction of railroad vehicle performance requires detailed formulations of wheel-rail contact models. In the past, most dynamic simulation tools used an offline wheel-rail contact element based on look-up tables that are used by the main s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c503b38f24b96c68b3687034debf038
https://doi.org/10.1115/jrc2009-63045
https://doi.org/10.1115/jrc2009-63045
Autor:
Khaled E. Zaazaa, Arend L. Schwab
Publikováno v:
Volume 4: 7th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B and C.
During the past decades Kalker developed a number of wheel-rail contact theories that can be used to determine the tangential forces and spin moment between the wheel and the rail [Kalker, 1990]. These theories are: Linear Theory, Strip Theory, Empir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::295863aa39458ab3b2ee783d4d28913c
https://doi.org/10.1115/detc2009-87655
https://doi.org/10.1115/detc2009-87655