Experimental and Numerical Investigation on Compressive Behavior of Polymeric Cell Foam Structures
摘要
Cellular structures are widely used in compressive applications as an energy absorbing and impact shield materials. The compressive behavior of polymer foam structures, having different pore sizes 3 mm, 3.5 mm, and 4 mm is evaluated experimentally and numerically. Fused deposition modeling process was employed to manufacture the structures. The effect of pore size on the compression behavior of the polymeric sample was evaluated under low quasi-static loading rate. The results present the energy absorption capacity of the foam structure having (pore dia.= 4 mm) is higher than others. The energy absorption of structure (pore dia.=4 mm) (2.4 MJ/m3) is ~ 990.9% higher than solid (0.22 MJ/m3) having the same size, and 152.6% higher than structure having 3 mm pore diameter (0.95), and 50.9% higher than 3.5 mm pore diameter (1.59 MJ/m3) structure. The specific energy of foam (pore dia. = 4 mm) is also higher than others. The study reflects the effect of porosity to design foams structures for various energy absorbing applications.