About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Multi-Principal Element Alloys III: Mechanical Behavior
|
Presentation Title |
Effects of Node Modification on Mechanical Properties of Periodic Micro-architectured Lattices |
Author(s) |
Mayowa Dada |
On-Site Speaker (Planned) |
Mayowa Dada |
Abstract Scope |
Micro-architectured lattices are innovative structural systems that optimize weight and cost without compromising on safety, performance and resilience. The effects of node modification (bracing) on their uniaxial & shear modulus and yield strength, and Poisson’s ratio were investigated. Finite Element models of braced Hexagonal and Triangular lattices under uniaxial compression and shear were developed in ABAQUS/CAE® using linear-elastic and nonlinear-elastic steps. 2D and 3D elements were used in separate models for validation and comparison with analytical derivation. Critical relative density and bracing length for enhancement and knock-down in the mechanical properties of the braced lattices were obtained. The results show a synergy of strain reduction in the shielded (braced) zone and strain increase in the unshielded zone. Properties of bending-dominated lattices were enhanced through bracing. This work informs decision on achieving compliant and resilient cellular structures through modification of the nodes without compromising on weight and cost. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Computational Materials Science & Engineering, Other |