 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12804 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4760 |
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| << Previous article | Volume 37, Issue 5 / 2002 | Next article >> |
| I. V. Novozhilov and V. N. Filippov, "To the evaluation of the conditions for rolling of the railroad wheel pair flange onto the rail head," Mech. Solids. 37 (5), 16-22 (2002) |
| Year |
2002 |
Volume |
37 |
Number |
5 |
Pages |
16-22 |
| Title |
To the evaluation of the conditions for rolling of the railroad wheel pair flange onto the rail head |
| Author(s) |
I. V. Novozhilov (Moscow)
V. N. Filippov (Moscow) |
| Abstract |
The flanges of a wheel pair restrict its lateral displacements
with respect to the track. The rolling of the flange onto
the rail head is an extremely dangerous regime of motion
which can lead to a crash.
The identification of conditions generating such a regime
is complicated by high order of the model
of the system, rather large difference between natural
frequencies, and essential nonlinearity. To analyze
the motion of carriages, both simplified
models (e.g., those of [1, 2]) and multibody models
(e.g., [3]) have been utilized.
Contact forces between the wheel and the rail
can be modeled by Coulomb friction. In this case, additional
conditions should be added to account for the possibility
of slip [1, 2]. If the contact forces in the multibody model
are accounted for by Carter's hypothesis, the analysis
is complicated by high order of the model and large
number of parameters [3]. Analysis of crash situations
indicates that derailment of carriages occurs mostly on curved
segments of the track [4].
In the present paper, we utilize the methods of separation
of motions to construct an approximate mathematical model
in which the number of degrees of freedom and parameters
is reasonably small to enable one to investigate
the appearance of emergency conditions by means of analytical
methods. |
| References |
| 1. | V. N. Danilov, V. D. Khusidov, and V. N. Filippov,
"Meandering motion of a vehicle subject to nonlinear force
and kinematic constraints,"
Vestnik VNIZhT, No. 3, pp. 20-24, 1971. |
| 2. | N. A. Radchenko, Curvilinear Motion
of Transportation Vehicles [in Russian],
Naukova Dumka, Kiev, 1988. |
| 3. | G. I. Petrov, "Computer technology based methods
to identify causes of train accidents and crashes,"
in Proceedings of the 2nd Scientific-practical Conference
on Train Operation Safety [in Russian], pp. 18-24,
MIIT, Moscow, 2000. |
| 4. | B. L. Nedorchuk, "An overall assessment of
the dangerous cargo transportation safety issue,"
in Proceedings of the Scientific-practical Conference
on Train Operation Safety [in Russian], p. 7,
MIIT, Moscow, 1999. |
| 5. | L. A. Shadur (Editor), Carriages: Theory and Design [in Russian],
Transport, Moscow, 1980. |
| 6. | I. V. Novozhilov, "Separation of motions of a railroad vehicle,"
Izv. AN SSSR. MTT [Mechanics of Solids], No. 1, pp. 55-59, 1980. |
| 7. | I. V. Novozhilov, Fractional Analysis [in Russian],
Izd-vo MGU, Moscow, 1991. |
| 8. | A. B. Vasil'eva and V. F. Butuzov, Asymptotic Methods
in the Theory of Singular Perturbations [in Russian],
Vysshaya Shkola, Moscow, 1990. |
|
| Received |
07 May 2001 |
| << Previous article | Volume 37, Issue 5 / 2002 | Next article >> |
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