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Free vibration analysis of laminated composite skew plates with cut-out

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Abstract

The present paper deals with free vibration analysis of laminated composite skew plates with and without cut-outs. The experimental investigation along with numerical simulation has been presented in this paper for complete understanding of the dynamic behaviour of laminated skew plates with cut-out. Glass fibre-reinforced laminated composite plates have been prepared by resin infusion process using vacuum bagging technique in the laboratory for experimental analysis. The experimental studies have been carried out on skew composite plates with varying size of cut-out placed at the centre. The numerical analysis has been carried out by developing a computer code in MATLAB. Special attention is drawn on the formulation of mass matrix by considering effect of rotary inertia. The results obtained by the finite element formulation using nine-noded isoparametric plate-bending elements are validated by comparing the results from relevant published literature. The numerical and experimental data are then compared for experimental verification of present investigation. The consistency of mode shapes between experimental and numerical investigations is checked by using modal assurance criteria.

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Authors and Affiliations

  1. Department of Civil Engineering, Narula Institute of Technology, Kolkata, 700109, India

    Arpita Mandal

  2. Department of Civil Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India

    Chaitali Ray

  3. Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India

    Salil Haldar

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  1. Arpita Mandal
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  2. Chaitali Ray
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  3. Salil Haldar
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Correspondence to Chaitali Ray.

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Mandal, A., Ray, C. & Haldar, S. Free vibration analysis of laminated composite skew plates with cut-out. Arch Appl Mech 87, 1511–1523 (2017). https://doi.org/10.1007/s00419-017-1267-4

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  • DOI: https://doi.org/10.1007/s00419-017-1267-4

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