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Lat. Am. j. solids struct. vol.14 número11

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Figure 1 shows the LJ potential,  U(r) , and the interatomic force,  F(r) , as a function of the dis- dis-tance,  r ij
Figure 2: An atomic chain with 5 atoms and distinct relations between the equilibrium   distance  r eq  and the chosen cut-off radius of the LJ potentials, r c
Figure 4a shows a 5-node atomic finite element. The central node is denoted by (i) and it inter- inter-acts with the two nearest nodes, (i-1) and (i-2) to the left and (i+1) and (i+2) to the right
Figure 5: Atomic finite element with seven nodes.
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