Mechanical Response of 3D Printed Bending-Dominated Ligament-Based Triply Periodic Cellular Polymeric Solids

摘要: Lightweight materials with complex structures such as cellular solids (or foams) have proven to possess desirable properties, specifically in terms of its stiffness, strength, and thermal conductivity, among other mechanical performance aspects while the density is reduced. The fabrication attractive yet has become possible due witnessed advancements techniques. However, a major challenge adapting design choosing appropriate lattice design. Therefore, this paper focuses on studying compressive behavior four different types topologies based mathematically known triply periodic minimal surfaces (TPMS); namely, Diamond (D), I-WP (IWP), Gyroid (G), Fisher-Koch C(Y) (CY). These are 3D printed using powder bed fusion selective laser sintering technique out Nylon thermoplastic polymer at various relative densities. effects number unit cells, type ligament-based TPMS architecture, yield ultimate toughness thoroughly investigated. results indicated that effect architecture stronger when decreased. Also, analyses showed all tested architectures were bending dominated implying it could be best applied shock absorbing vibration mitigation applications.