Engineering Transactions, 66, 4, pp. 357–373, 2018
10.24423/EngTrans.898.20180809

### Analytical Modeling of I-beam as a Sandwich Structure

Krzysztof MAGNUCKI
Institute of Rail Vehicles TABOR
Poland

Jerzy LEWIŃSKI
Institute of Rail Vehicles TABOR
Poland

The paper is devoted to an analytical model of I-beam, with consideration of the shear effect. The model is based on the sandwich beam theory. The field displacements and strains are formulated with consideration of a nonlinear hypothesis of flat cross-section deformation of the beam. The governing differential equations for the I-beam are obtained based on the principle of stationary total potential energy. The shear effect of the beam is illustrated for the threepoint bending case. The analytical solution is compared to FEM numerical calculation. The results of the analysis are presented in Tables and Figures.
Keywords: I-beam; shear deformation; three-point bending; sandwich beam theory
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

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DOI: 10.24423/EngTrans.898.20180809