PARAMETER ANALYSIS OF DYNAMIC CHARACTERISTICS OF SANDWICH COMPOSITE PLATES

doi:10.19936/j.cnki.2096-8000.20210628.012

Abstract

Abstract: The dynamical equations of sandwich composite plates were established based on the Kirchhoff assumption and Hamilton′s principle. The example verification was used to prove the correctness of the formula. Next, the effect of material parameters on the dynamic properties, for instance the thickness ratio of sandwich structure and the ratio of shear modulus of sandwich layer, was studied. The inherent frequency and loss factor were ascent with the increase of the ratio of thickness of sandwich layer to total thickness; inherent frequency was almost constant with the increase of the ratio of shear modulus of sandwich layer, and loss factors are descent with the increase of the ratio of shear modulus of sandwich layer. The first three frequencies and loss factors gradually increase with the increasing of elastic modulus ratio.

Key words: sandwich composite plates; dynamic characteristics; Hamilton′s principle; parameter analysis

CLC Number:

TB332

MA Jia-xing, FAN Ya-ping. PARAMETER ANALYSIS OF DYNAMIC CHARACTERISTICS OF SANDWICH COMPOSITE PLATES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(6): 77-81.

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