Refined nonlinear micromechanical models using artificial neural networks for multiscale analysis of laminated composites subject to low-velocity impact

Experimental and numerical study of low-velocity impact damage in sandwich panel with UHMWPE composite facings

“…Strain localization (i.e., a high strain gradient near the impacted area) may occur in a composite material during material softening after the damage initiation (Eqns. [1][2][3][4][5]. The strain energy (Eqn.…”

“…Sandwich composite panels (SCPs) have been extensively used in aerospace, marine, wind energy, and civil engineering applications due to their high specific strength and stiffness, excellent energy-absorbing properties, as well as corrosion and fatigue resistance [1]. A typical SCP consists of two multi-layered, thin and stiff face sheets (or facings) and a relatively thick, low-density core [2].…”