d "0.1 [mm]" "Strut diameter" L "10 [mm]" "Cell side length" V L^3 "Cell volume" rhob "2700 [kg/m^3]" "Density of bulk material" Eb 70[GPa] "Young's modulus of bulk material" nub 0.3 "Poisson's ratio of bulk material" para 4 "Parameter" m 3 "Array parameter in x-direction" n 3 "Array parameter in y-direction" p 10 "Array parameter in z-direction"