Shear response of pyramidal lattice sandwich cores with tailored I-beam struts.

ABSTRACT: This research paper investigates the shear response of pyramidal lattice (PL) sandwich cores, where square-shaped strut cross-sections are geometrically modified into I-beam-like configurations. These PL sandwich cores are 3D printed via Digital Light Processing (DLP), and their shear performance is experimentally and numerically evaluated for various I-beam-like strut cross-sections. The measurements reveal that PL structures with I-beam struts outperform conventional square-beam structures in terms of shear modulus (+ 13%), shear strength (+ 11%) and gravimetric energy (+ 24%). These improvements are attributed to the larger bending stiffness of the I-beam struts, enhancing their capacity to resist shear loads. A numerical parametric study further examines how various architectural param

SUBMITTER: Uddin MA 

PROVIDER: S-EPMC12381169 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature