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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Design for Mechanical Behavior of Architectured Materials via Topology Optimization
Presentation Title Optimized Microlattices for High Strength and Impact Attenuation
Author(s) Eric C Clough, Christopher S Roper, Zak C Eckel, Jacob M Hundley, Morgan A Stilke, Tobias A Schaedler
On-Site Speaker (Planned) Eric C Clough
Abstract Scope Using HRL’s rapid and scalable self-propagating photopolymer waveguide process, microlattices that achieve the significant performance gains of geometrically complex, topologically optimized structures can be fabricated without incurring the cost or rate limitations of conventional additive manufacturing approaches. We present the design and fabrication of optimal microlattice architectures for varying applications, including nanocrystalline metallic sandwich cores with optimized strength anisotropy for use in ultra-lightweight aerospace structures and viscoelastic impact attenuators with optimized post buckling behavior for use in head protection systems. We consider spatially and temporally varying boundary conditions in addition to fabrication constraints to develop optimal architectures with extreme performance that remain amenable to scalable manufacturing. Further, the open cellular structure of our microlattice architectures are designed to achieve desirable fluid flow characteristics for multiple uses, including thermal management, wash-out tooling for rapid sandwich panel fabrication, and improved comfort or energy absorption for head protection applications.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Level Set Based Topology Optimization Framework to Design Extreme Thermos-elastic Microstructure: Influence of Graded Interfaces and Multi-materials
A Panel Discussion for the Design of Materials via Topology Optimization
Deformation and Failure of Bioinspired Segmented Architectured Beams and Plates
Dense Architectured Materials in Engineering and in Nature
Design for Discovery: Integrated Computational Design & Additive Manufacturing of Mechanical Metastructures with a Parametric Level-set Based Approach
Design of Functionally Graded Microstructures with Manufacturability
Design of Honeycomb TWIP Steels for Maximum Energy Absorption
Designing Metamaterials for Enhanced Noise and Vibration Properties
Discrete-element Modeling of Nacre-like Materials: Random Microstructures, Nonlinear Deformations and Fracture
Efficient Microstructural Design: A Topological Sensitivity Approach
Extreme Design: An Adrenalin Rush with Topology Optimization, Metamaterials and Additive Manufacturing
Incorporating Material Heterogeneity in Automated Design Tools
Inverse Homogenization Design of Micro-truss Architected Materials Using Geometric Primitives
Mechanical Properties of Work Hardened Steel Multilayers with Bimodal Grain Size
Multiscale Design with Architected Material Connectivity for Multiphysics Problems
Optimal Design of Architected Materials with Extreme Energy Dissipation
Optimized Microlattices for High Strength and Impact Attenuation
Realizing Optimized Mesoscale 3D Architected Material Designs via Nanoparticle Assembly by Pointwise Spatial Printing
Tailoring the Dynamic Properties of 3D Woven Metallic Lattices through Topology Optimization
Topology Optimization for Sliding Abrasive Wear of Bi-material Composites
Topology Optimization of Architected Materials with Application-specific Tailored Properties
Topology Optimization of Cellular Materials with Tailored Band Gaps
Topology Optimization of Multi-material Truss Lattice Structures via Geometry Projection
Topology Optimization with RVE Lattice Structures Subject to Additive Manufacturing and Stress Design Constraints

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