Nonlinear equations of motion for a laminated composite plate under blast loading, based on the first-order shear deformation theory, are derived. The governing equations are solved by the finite-difference method in conjunction with the Newmark time integration scheme. The rules of material property degradation are modified to allow for strain rate effects. A progressive damage model is developed based on the modified rules of material property degradation and Hashin-type failure criteria to predict different failure modes. The validity of the method is demonstrated by quantitative and qualitative comparisons of present results with those available in the literature. Results for clamped glass/epoxy laminated composite plates with constant and strain-rate-dependent mechanical properties under a blast load are presented and compared for various ply stacking sequences, and pertinent conclusions are outlined.
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Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 50, No. 3, pp. 419-440 , May-June, 2014.
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Shokrieh, M.M., Karamnejad, A. Investigation of Strain Rate Effects on the Dynamic Response of a Glass/Epoxy Composite Plate Under Blast Loading by Using the Finite-Difference Method. Mech Compos Mater 50, 295–310 (2014). https://doi.org/10.1007/s11029-014-9415-1
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DOI: https://doi.org/10.1007/s11029-014-9415-1