PSI - Issue 26

Panagiotis N. Lymperopoulos et al. / Procedia Structural Integrity 26 (2020) 263–268

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Panagiotis N. Lymperopoulos, Efstathios E. Theotokoglou / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 6 Force at x-axis at the bottom of the pentamode for the steel material

Fig.7 Calculation of G c /G r for the steel material

From Figure (7), the optimum dimensions of the diameters (D, d) of pentamodes, which have similar behavior with isolators, are found between D = 1.32mm, d = 1.188mm and D = 1.32mm, d = 1.056mm. For a pentamode, as described above, with D = 1.32mm, d = 1.188mm with steel material, fully constrained the bottom nodes, constrained the z-axis displacement at the top nodes and applying an increasing displacement at x axis, the forces are given in Figures 8, 9.

Fig. 8 Force at x-axis