About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
Effects of Disorder on Nonlinear Architected Materials for Wave Manipulation |
| Author(s) |
Caglar Tamur, Maya Brandy, Haning Xiu, Nicholas Boechler, H. Alicia Kim |
| On-Site Speaker (Planned) |
Caglar Tamur |
| Abstract Scope |
Nonlinear architected materials can offer unique capabilities for passive wave manipulation, but current efforts are mainly limited to quasi-static studies or to periodic structures. In this work, we explore the dynamic behavior of nonlinear architected materials with spatial disorder, with a focus on improving impact mitigation performance. We utilize the bilevel optimization framework developed in the previous work (MacNider et al., 2025), where the material system is idealized as a one-dimensional chain of mass-spring-dampers, with the nonlinear springs capturing the effective constitutive response of the material at the mesoscale. After identifying the ideal nonlinear constitutive relations with dynamics simulations, we design the mesostructures with the aid of topology optimization. We discover disordered configurations that significantly outperform homogenous or periodic counterparts in terms of reducing the kinetic energy transmission, as well as improving robustness with respect to input energy to the system and manufacturing uncertainties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Computational Materials Science & Engineering |