In this paper a design method based on bending strength and continuum damage evaluation is developed for composite sandwich structures with graded corrugated truss core. Three types of sandwich panels with different graded corrugated truss core (the width of the core and inclination angle described by linear and exponential functions) are designed and analyzed by the continuum damage evolution model. The influences of the geometric parameters on the load capacity and damage distribution of the graded sandwich structures with graded corrugated truss core are studied. The numerical results show that the analyzed structure with the graded core width designed in a lower convex function arrangement will get a higher buckling load under three-point bending load, and the inclination angle parameter may influence the bending strength of the graded sandwich structure slightly.
Composite Structures – Elsevier
Published: Feb 1, 2018
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