An efficient method for design of lattice core sandwich structures with superior buckling strength under compression

Buckling failure is a major concern in lightweight lattice core sandwich structures (LCSSs). This study proposes an efficient method for designing LCSSs with superior buckling strength under uniaxial compression. In this approach, the buckling-resistant non-uniform shapes of single struts different slenderness and inclination are first identified, then they directly used to replace uniform LCSSs. can save considerable design time compared conventional methods, which require conducting optimizations on entire Numerical results demonstrate that four designed representative gain over 15% improvement their counterpart even comparable solutions from Two 3D printed, test validate at least 10% compressive strength. Based proposed method, various could be loadings.