Numerical Analysis of Deflections of Multi-Layered Beams
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University of Zielona Gora, Institute of Building Engineering, Poland
Online publication date: 2015-03-01
Corresponding author
Tomasz Socha   

*University of Zielona Gora, Institute of Building Engineering, Szafrana st 1, 65-516 Zielona Gora, Poland, tel.+48683282271
Civil and Environmental Engineering Reports 2014;15(4):33–42
The paper concerns the rheological bending problem of wooden beams reinforced with embedded composite bars. A theoretical model of the behaviour of a multi-layered beam is presented. The component materials of this beam are described with equations for the linear viscoelastic five-parameter rheological model. Two numerical analysis methods for the long-term response of wood structures are presented. The first method has been developed with SCILAB software. The second one has been developed with the finite element calculation software ABAQUS and user subroutine UMAT. Laboratory investigations were conducted on sample beams of natural dimensions in order to validate the proposed theoretical model and verify numerical simulations. Good agreement between experimental measurements and numerical results is observed.
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