Abstract
Use of laminated composite in the different weight-sensitive branches of engineering has gained immense popularity due to its high stiffness-to-weight ratio. In spite of this great advantage, this material is vulnerable to damage under impact loading due to its low transverse shear strength. A look through the literature on shell reveals that the impact response of civil engineering shell structures has not received proper attention. This article aims to carry out such a study of composite civil engineering shell considering skewed hypar as the geometric configuration. The modified Hertzian contact law which accounts for the permanent indentations is utilized to compute the contact force and the time-dependent equations are solved by Newmark’s time integration algorithm. Parametric studies are performed for the centrally impacted cross and angle ply skewed hypar shells modeled with eight noded isoparametric doubly curved shell elements. Simply supported boundary condition and different impact velocities are considered.
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