About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Additive Manufacturing and Cellular/Lattice Structures: Designs, Realization and Applications
|
Presentation Title |
AM-Fabricated Plate Lattice Structures for Impact Applications |
Author(s) |
Joseph Berthel, Nicholas Jones, Brandon McWilliams, Jian Yu, Rahul Panat, Jack Beuth |
On-Site Speaker (Planned) |
Joseph Berthel |
Abstract Scope |
Additive manufacturing has the capabilities to fabricate complex lattice geometries that cannot be produced using other manufacturing processes. Plate lattices are a type of lattice structure composed of intersecting plates and are of interest in impact applications because of their potential for having high energy absorption at low relative weights. Mechanical properties of lattices including strength and relative density can be tailored for an application by selecting specific unit cell topologies and dimensions. Here, we study different plate lattice topologies and their mechanical performance in impact applications. Explicit dynamic finite element simulations are developed in ANSYS simulation software, and plate thickness and unit cell size are varied to predict optimal lattice geometries. From these simulations, candidate lattice samples are fabricated using laser powder bed fusion. Compression and ballistic tests are conducted on samples to validate simulation models and determine lattice strengths. |