Sandwiched Plate Vibration Analysis with Open and Closed Lattice Cell Core

This work attempts to replace the sandwich core's traditional shape and material with a cellular pattern, where cells have regular shape, distribution, size. The contribution of this paper is design two structures, one open-celled other closed, evaluate performance plates lattice cell core as it used for many industrial applications, particularly in automobile engineering. new theoretical formulations are constructed structures find free vibration characteristics. results compared shape. Derivation equations predict mechanical properties based on relative density chosen shapes, specific equation three-layer plate, substitution by using excel sheet. Results promising, effectiveness pattern analysis estimation. Limitations error rates come through empirical equations, their ratio values higher depending behavior material. Findings reveal, open decrease modulus elasticity (PLA: -90.4%) (TPU: -90.4%), increases natural frequency 44.5%) 46.4%), closed-cell decreases -66.9%) -64.4%), 36%) 37.7%). Converting solid substance or replacing foam form way better save weight selected absorbing energy wave.