Absorbing mechanical shocks and vibration energy is crucial in industrial, domestic and medical applications.
Very often, systems (such as hydraulic cylinders) or structures (such as helmets) are used to achieve energy
absorption or protection from impacts or periodic vibrations. In this respect, mechanical metamaterials
have received much attention in recent years due to their extraordinary mechanical properties, including
outstanding specific stiffness and strength, and energy absorption. Here, we design a stretching-dominated
mechanical metamaterial that can absorb very large energies while retaining a low density. In this study, a few
examples of metamaterials are considered and we show that a new class of shell lattice (SL) metamaterials has
the best mechanical properties for shock absorption they are ultra stiff, ultrastrong, and possess high specific
energy absorption at low relative density.
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I am a professor of engineering, physics and projects at universides. I am a scientist and researcher in the field of vibratory engineering [login to view URL]