|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||A Comparison of Energy Absorption Behavior of Additively Manufactured AlSi10Mg Honeycomb, Lattice and TPMS Cellular Structures under Quasistatic Compression
||Mandar Shinde, Irving Ramirez-Chavez, Daniel Anderson, Jason Fait, Mark J Jarrett, Dhruv Bhate
|On-Site Speaker (Planned)
Metallic honeycombs and foams have been used for energy absorption due to their ability to reduce transmitted stresses while enabling high specific energy absorption. Additive manufacturing has enabled the evaluation of a wide range of cellular materials in an attempt to further improve performance. In this work, AlSi10Mg honeycombs, auxetic and stochastic lattices, and diamond, gyroid and Schwarz-P Triply TPMS structures were manufactured using the laser powder bed fusion process, and subjected to quasistatic compression. The responses and energy absorption characteristics of the different shapes across three relative densities was compared, with specific emphasis laid on the shape of the load-displacement response. Explicit FEA simulation was validated against, and combined with, experimentally observed deformation patterns in order to relate structure to a range of energy absorption properties. Failure modes were also characterized and found to be a function of cell shape and relative density.
||Additive Manufacturing, Mechanical Properties, Modeling and Simulation