Ryan Alberdi

TL;DR: In this paper, the energy-absorption performance of lattice metamaterials with a heterogeneous spatial layout of different unit cell architectures was studied, and a rational design approach was developed to explore the design space of these lattices, inspiring a nonintuitive design which was evaluated alongside designs based on mixture rules.

TL;DR: In this article, an isogeometric approach is presented for the formulation of finite elements for arbitrary spatially curved 3-D beams, which employ the same Non-Uniform Rational B-Spline interpolations as used in the CAD representations to interpolate both geometry and unknown fields in the finite element analysis, leading to a seamless transition between complex CAD models utilized by architects and the analysis models used by engineers.

TL;DR: In this paper, the authors investigate sandwich panels with different types of metallic lattice topologies and compare their performance under prescribed blast loads using nonlinear finite element simulations, and evaluate performance indicators including: energy dissipated through plastic deformation, maximum force transferred, and plate deflections.

TL;DR: It is shown that the algorithms that exhibit robustness are those that incorporate intensification and diversification in ways that can effectively navigate the large variable spaces present in steel frame design optimization problems.