617 Bio-inspired Solids, Structures and Metamaterials

Ranajay Ghosh, University of Central Florida
Pablo Zavattieri, Purdue University
Nima Rahbar, Worcester Polytechnic Institute
Ashkan Vaziri, Northeastern University
Franck Vernerey, University of Colorado, Boulder
Francois Barthelat, McGill University
Bio-inspired materials and structures have come a long way from direct adoption and material substitution to mechanics and physics based conceptual understanding and design. Biological structures which are highly constrained in parent material choices have responded to evolutionary pressures by using spatial organization (topology) of matter at multiple scales to improve performance. This leads to not only mechanical properties enhancement but also multifunctional behavior due to intricacies in microstructure of the resulting material. This topological route to leverage properties is also the fundamental basis of the emerging frontier of meta-materials, which are materials with extreme and non-traditional mechanical and functional response such as negative poisson’s ratio, regime differentiated nonlinear mechanical behavior, band-gaps and non-traditional multiscale fracture behavior.
The utilization of complexity rather than simplicity in these systems makes traditional design tools and linear extrapolation strategies obsolete, thereby requiring sophisticated computational models with intense simulation workloads. These include nonlinear finite element models, multi-scale and multi-physics simulations using atomistic calculations and their combinations. Therefore, a computer driven discovery and design is essential for both deepening our understanding of the behavior of these systems as well as prevent expensive trial and error experimental approaches for design. This later because fabrication is not straightforward, often depending on advanced manufacturing methods such as additive manufacturing, specialized micro and nano-fabrication or tedious manual assembly for more intricate multi-material systems.
This area of research, which has grown manifolds due to advances in both computational capacity and advanced digital manufacturing since the last decade is therefore interdisciplinary and modern while still investigating some of the most ancient living systems. It is ideally suitable for computational mechanics based and computer augmented investigations. The aim of this mini-symposium is to convene researchers from across the globe to share and disseminate their recent research in this area across various sub-disciplines of computational mechanics, materials and structures across engineering and sciences. As a result of the series of talks in this mini-symposia, we hope to achieve both scrutiny and cross-fertilization of ideas, critical to advancing of this frontier of research.
The target participants of this mini-symposia would be scientists and engineers working in mechanics, materials, and structures who use computational methods and tools in modeling, design, experimental validation and visualization of biologically inspired solids, structures and meta-materials under various loading conditions.