Volume 10 Issue 3 - May 2018

  • 1. Free vibration analysis of composite beams using finite elements and shear deformation theory

    Authors : K. Rangarajan, Dr. S. Vimala

    Pages : 179-185

    DOI : http://dx.doi.org/10.21172/1.103.31

    Keywords : ANSYS 14.5, composite beams, free vibration, mode shapes, natural frequencies, shear deformation theory, various boundary conditions.

    Abstract :

    Composite materials have interesting properties such as high strength to weight ratio, ease of fabrication, good electrical and thermal properties compared to metals. A laminated composite material consists of several layers of a composite mixture consisting of matrix and fibers. Each layer may have similar or dissimilar material properties with different fiber orientations under varying stacking sequence. There are many open issues relating to design of these laminated composites. The finite element software ANSYS v14.5 is used to simulate the free vibrations. The parameters investigated include the effect of fiber orientation, thickness of beam, length of beam and support conditions. The composite beam consists of four layers of composite beam which has a total thickness of 5mm, 300 mm length and 25 mm width. The natural frequencies of analytical results and theoretical values are presented for various ply orientation angle and for various boundary conditions of different composite material, and the mode shapes are also determined using ANSYS 14.5. Then the comparisons of shear deformation and ANSYS results have obtained a good agreement.

    Citing this Journal Article :

    K. Rangarajan, Dr. S. Vimala, "Free vibration analysis of composite beams using finite elements and shear deformation theory ", https://www.ijltet.org/journal_details.php?id=932&j_id=4621, Volume 10 Issue 3 - May 2018, 179-185, #ijltetorg