Calculated disturbances for evaluation of dynamical properties of freight cars
DOI:
https://doi.org/10.15802/stp2013/16600Keywords:
cars, dynamic quality, disturbances from the road, track irregularity, track-test recordsAbstract
Purpose. To form realizations of the calculated disturbances for studying the dynamic properties of railway vehicles. Methodology. Records of the track-test car for one of the typical track sections of the Pridneprovsk railroad are the basic data for building the disturbance components. To derive the true geometric parameters of the railway gauge the records of the track-test car using a double-point metering circuit are transformed considering the transfer function of the measuring system. A model of the calculated disturbances is presented as the four components: a symmetric vertical irregularity determined as a semi-sum of vertical irregularities of the right and left rails; an oblique-symmetric vertical irregularity of the track determined as a semi-difference of vertical irregularities of the right and left rails; horizontal irregularities of the right and left rails. Acceptability criterion of the constructed disturbances is a relationship between the values of the dynamical properties factors of cars and the corresponding experimental data. Findings. The three techniques for the calculated disturbances forming are proposed. The first technique uses records of the track-test car for the track with a sufficiently high amount for given track conditions as components of the calculated disturbances. In so doing symmetrical vertical components of disturbances resulting from records of settling are corrected with the mass and stiffness parameters of the car under consideration. The second technique uses building and applying the theoretical realizations of irregularities corresponding to a real track according to a spectral analysis. The third technique ensures a polyharmonic model of disturbances, the parameters of which are the values of the basic frequencies and amplitudes that are typical for irregularities of a railway track. A possibility of practical applying of the constructed models of disturbances are presented using an example for defining the standardized factors of the dynamical properties of empty and loaded open cars. Comparison of the calculated factors and experimental data demonstrated its assurance. Originality. The three models of the calculated disturbances that can be used for calculating estimation of the maximal values of the standardized dynamical factors of freight vehicles are proposed. Practical value. The research results ensure an acceptable predicted evaluation of the dynamical properties factors for the designed or refitted vehicles of railway rolling stock, refinement of the values of the certain system parameters at the stage of prototypes, reduction of the expenses for performance trials, etc.
References
Boronakhin A.M., Oleynik L.N., Filipenya N.S. Malogabaritnaya integrirovannaya sistema diagnostiki relsovogo puti [Small-scale integrated system of diagnostics of railway track]. Giroskopiya i navigatsiya – Gyroscopy and Navigation, 2009, no. 1, pp. 63-74.
Boronakhin A. M., Bokhman E. D. Mobilnaya inertsialnaya sistema monitoringa relsovogo puti [The mobile inertial system of monitoring of a rail way]. Izvestiya SPbGETU "LETI" – Bulletin of SPSEU ”LETI”, 2011, no. 10, pp. 84-91.
Boronakhin A.M., Gupalov V.I., Filipenya N.S. K voprosu o sinteze puteizmeritelnykh kompleksov novogo pokoleniya [To the question of the track-test complexes synthesis of the new generation]. Zheleznye dorogi mira – Railways of the world, 2004, no. 8, pp. 68-72.
Bondarenko I.O., Kurhan D.M., Patlasov O.M., Savluk V.Y. Vykorystannia tsyfrovoi vymiriuvalnoi tekhniky dlia eksperymentalnykh doslidzhen vzaiemodii kolii i rukhomoho skladu [The use of digital measuring technology for experimental studies of track and rolling stock interaction]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011, issue 37, pp. 124-128.
Zakharov S.M., Romen Y.S. Matematicheskoye modelirovaniye vliyaniya parametrov puti i podvizhnogo sostava na protsessy iznashivaniya kolesa i relsa [Mathematical modeling of the influence of the track and rolling stock parameters on the processes of wheel and rail wear]. Vestnik VNIIZhTa – VNIIZhT Bulletin, 2010, no. 2, pp 26-30.
Umanov M.I., Tsyganenko V.V., Reydemeyster A.G., Khalipova N.V. K voprosu modelirovaniya puti pri issledovanii vzaimodeystviya puti i podvizhnogo sostava [To the question of track modeling at the cooperation research of the track and rolling stock]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2009, issue 30, pp. 239-242.
Lapina L.G., Mashchenko I.A. Amplitudno-chastotnyy analiz vertikalnykh nerovnostey zheleznodorozhnogo puti. [Amplitude and frequency analysis of the vertical irregularities of railway track]. Tekhnicheskaya mekhanika – Technical mechanics, 2012, no. 3, pp. 9-15.
Kharris U.D., Zakharov S.M., Landgren D., Turne K., Ebersen V. Obobshcheniye peredovogo opyta tyazhelovesnogo dvizheniya: voprosy vzaimodeystviya kolesa i relsa [Generalization of advanced experience of heavy vehicle motion: wheel and rail interworking]. Moscow, Intekst Publ., 2002. 408 p.
Tekhnichni vkazivky shchodo otsinky stanu reikovoi kolii za pokaznykamy koliievymiriuvalnykh vahoniv ta zabezpechennia bezpeky rukhu poizdiv pry vidstupakh vid norm utrymannia reikovoi kolii [Technical instructions in relation to estimation of the rail track state according to the parameters of the track-test cars and providing of train motion safety at the deviations from the norms of rail track maintenance]. Kyiv, 2005. 48 p.
Ushkalov V.F., Lapina L.G., Mashchenko I.A. Raschetnyye vozmushcheniya dlya issledovaniya dinamiki zheleznodorozhnykh vagonov [Computation disturbances for dynamics research of the railway cars]. Zaliznychnyi transport Ukrainy – Railway transport of Ukraine, 2012, no. 1. pp. 38-41.
Ushkalov V.F., Reznikov L.M., Redko S.F. Statisticheskaya dinamika relsovykh ekipazhey [Statistical dynamics of rail cars]. Kyiv, Nauk. Dumka Publ., 1982. 360 p.
Garg V.K., Dukkipati R.V. Dynamics of Railway Vehicle Systems. New York, Academic Press Publ., 1984. 407 p.
Il-Yoon Choi, Ju-Hwan Um, Jun S Lee, Hyun-Ho Choi. The influence of track irregularities on the running behavior of high-speed trains. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2013, vol. 227, issue 1, pp. 94-102.
Pombo J., Ambrósio J. An alternative method to include track irregularities in railway vehicle dynamic analyses. Nonlinear Dynamics, 2012, vol. 68, issue 1-2, pp. 161-176.
Downloads
Published
How to Cite
Issue
Section
License
Copyright and Licensing
This journal provides open access to all of its content.
As such, copyright for articles published in this journal is retained by the authors, under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0). The CC BY license permits commercial and non-commercial reuse. Such access is associated with increased readership and increased citation of an author's work. For more information on this approach, see the Public Knowledge Project, the Directory of Open Access Journals, or the Budapest Open Access Initiative.
The CC BY 4.0 license allows users to copy, distribute and adapt the work in any way, provided that they properly point to the author. Therefore, the editorial board of the journal does not prevent from placing published materials in third-party repositories. In order to protect manuscripts from misappropriation by unscrupulous authors, reference should be made to the original version of the work.
