Abstract
In this article, a 3-D finite element modeling procedure is implemented, in order to predict the static loading and unloading response of thin circular simply supported GLARE plates, subjected to lateral indentation by a hemispherical indentor. ANSYS software is used and a non-linear analysis is employed with geometric and material non-linearities. The modeling procedure is applied to GLARE 2-2/1-0.3 and GLARE 3-3/2-0.3 simply supported plates with 40mm radius, and to a GLARE 2-2/1-0.3 simply supported plate with 50mm radius. The load–deflection curve during loading and unloading, and the permanent plate deflections of the GLARE plates are calculated for different maximum loading indentation levels. It is found that the permanent dent depth of the GLARE plates is increased as the maximum loading indentation increases. It is revealed that for the same maximum loading indentation, when the GLARE plate radius is increased, the permanent dent depth is reduced. It is also found that the unloading load–deflection curves, corresponding to different maximum loading indentation levels of each GLARE plate, are approximately parallel. Based on this finding, an approximate graphical method to obtain unloading curves is proposed. The role of the metal volume fraction to the loading–unloading response of the fiber–metal laminates is also investigated.
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