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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Design for Mechanical Behavior of Architectured Materials via Topology Optimization
Presentation Title Deformation and Failure of Bioinspired Segmented Architectured Beams and Plates
Author(s) Ahmed Saleh Dalaq, Francois Barthelat
On-Site Speaker (Planned) Ahmed Saleh Dalaq
Abstract Scope Segmented architectures are prominent in nature, for example in spines, fingers, fish fins, the wings of rays or mineral tesserae in sharks. These structural elements are universally made of hard building blocks of well-defined geometry, repeated periodically and bonded by soft interfaces. Local mechanisms at the interfaces and collective motion of the blocks can provide controlled flexibility, barrier to crack propagation, or energy dissipation mechanisms. Here we study the deformation and failure mechanisms of bars and plates made of building blocks which interact through frictional contact. Analytical and finite element models validated with experiments on 3D printed architectures reveal how the number of blocks, their geometry and friction at the interfaces can be tuned to achieve the desired failure mode and to maximize strength and toughness. The study provides insights into the construction of natural segmented structures, as well as new guidelines for the design of modern architectured materials.
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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