The stresses arising in a railway wheel due to an impact loaded are presented in this paper. The wheel is modelled using a string of conical shell finite elements. The response of the wheel to an impact loaded is analysed using the modal superposition technique. The stresses at various locations on the wheel are determined and compared with those arising due to a static load. © 1993.

T. C. Ramesh

Natrajan Ganesan

Degrees of freedom (mechanics)

finite element method

Rails

Shells (structures)

stresses

Structural analysis

Structural loads

IMPACT LOAD

MODAL SUPERPOSITION TECHNIQUE

RAILWAY WHEELS

THREE MODED CONICAL SHELL ELEMENTS

Vehicle wheels

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It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Stresses in a railway wheel due to an impact load

Computers and Structures

Composite materials have been finding increasing applications in the field of transportation. A U.S.A. patent suggesting the use of composite materials for railway wheels is the basis for this paper. In thispaper, the natural vibrations of railway wheels made of composite materials have been theoretically estimated by the finite element method and compared with those in wheels made of steel. A thick conical shell element with displacements in the axial, radial and circumferential directions has been used in the analysis. This element brings out the coupling between the different modes of vibration, and this aspect is important in the dynamic analysis of composite wheels. Three geometries of wheels and two materials (Kevlar-epoxy and graphite-epoxy) have been used in the study. For each of these materials, two fiber orientations (radial and circumferential) have been taken up and their natural frequencies determined. © 1992.

Journal of Sound and Vibration

Free vibration analysis of composite railway wheels

This paper explains the application of the Finite Element Method to the dynamic analysis of roller clutch sleeves which largely find their application in starter motors. The present approach is semi-analytic which reduces the three-dimensional problem to a two-dimensional one. The sleeve is taken as a rotationally symmetric solid. The cross section is divided into triangular elements. The first few natural frequencies and their associated eigenvectors are obtained using a simultaneous iteration scheme. The transient force function is expanded into Fourier series and the problem is solved independently for each Fourier index. The first few converged natural frequencies and the associated eigenvectors are used for finding the response of the sleeve using modal superposition technique. The displacements and stresses are computed for each harmonic and are combined to get final displacements and stresses for each time step. © 1989.

Dynamic stress analysis of roller clutch sleeve

The Shock and Vibration Digest

Book Reviews : COMPUTER AIDED DESIGN IN MECHANICAL EMGINEERING V. Ramamurti Tata Mc-Graw-HIII Publishing Co., Ltd. New Delhi, India 1987, 284 pp

Journal of Engineering for Industry

Measurement and Prediction of Impact Loads From Worn Railroad Wheel and Rail Surface Profiles

Journal	Computers and Structures
ISSN	00457949
Open Access	No