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An impact-resistant structure is a structural system designed to withstand, absorb, and dissipate large, rapidly applied dynamic loads—such as those arising from collision, projectile impact, blast, or crash—without suffering catastrophic failure ^[1]. Such structures rely on material and geometric arrangements that undergo controlled, energy-dissipating deformation, employing members and materials whose plastic collapse, progressive folding, or crushing spread the kinetic energy of impact over a deforming volume and decelerate the impacting mass rather than transmitting the load elastically to the rest of the structure ^[2]. Impact-resistant structures are distinguished from ordinary static-load structures by their design for impulsive loading rates, under which material strength and energy absorption depend on strain rate, inertia effects become significant, and the distinction between elastic and inelastic response determines survivability ^[1]. The defining principle is the controlled dissipation of impact energy through designed inelastic deformation, so that the structure manages the rapid delivery of kinetic energy by deforming in a predictable manner that protects the load-bearing function, rather than by rigidly resisting the load ^[2]. Its defining characteristic is energy absorption under high-rate loading ^[3].