Smart tailoring of hybrid composite laminates with improved dynamic response

Hirotoshi Okazaki; Vijayan Baburaj; Tatsuzo Koga

doi:10.1117/12.305608

16 April 1998 Smart tailoring of hybrid composite laminates with improved dynamic response

Hirotoshi Okazaki, Vijayan Baburaj, Tatsuzo Koga

Proceedings Volume 3321, 1996 Symposium on Smart Materials, Structures, and MEMS; (1998) https://doi.org/10.1117/12.305608
Event: Smart Materials, Structures and MEMS, 1996, Bangalore, India

Abstract

Dynamic damping analysis study of hybrid composite laminated plate structures and their tailoring aspects to enhance dynamic behavior have been discussed in this paper. The present analytical formulation is based on an integrated approach in which the lamina level micromechanics based theory is combined with a higher-order transverse shear deformable plate theory to predict the equivalent material specific damping capacity (SDC) of a general hybrid composite laminated plate structure. The micromechanical equations based on a self-consistent stress method are used for the calculation of elastic stiffness and SDC at the lamina level. As a typical example, the solution procedures of a steady state dynamic characteristics including the modal SDC of a rectangular laminated plate simply-supported on all the four edges have also been discussed. Specifically, our aim is to evaluate the effects of fiber orientation and the volume fraction of the hybridizing fiber on the dynamic behavior such as, flexural vibration frequencies and the modal SDC of the laminated plate. In order to get a basic understanding about the various tailoring aspects, a parametric optimization was done to get the appropriate fiber volume fractions of hybrid composite to achieve a balanced dynamic performance involving both resonance frequency and modal SDC. Numerical results are furnished for a typical Carbon/E-Glass fiber hybrid composite laminated plate to understand the above mentioned effects. It has been observed that the fiber orientation has a strong influence in controlling the SDC of laminated plate similar to those of the natural frequencies of the plate. The modal SDC of the first three modes indicates that the trend of the SDC variation with respect to laminate fiber angle is in a reversed manner as those of the natural frequencies.

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Hirotoshi Okazaki, Vijayan Baburaj, and Tatsuzo Koga "Smart tailoring of hybrid composite laminates with improved dynamic response", Proc. SPIE 3321, 1996 Symposium on Smart Materials, Structures, and MEMS, (16 April 1998); https://doi.org/10.1117/12.305608

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KEYWORDS

Composites

Cerium

Analytical research

Smart materials

Fermium

Mechanics

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