Reduced-Order Model data for FLASh: Fast simulation tools for Lattice Structures

Pre-trained Reduced-Order Model (ROM) data for the FLASh Python library. The HDF5 files contain reduced bases and interpolation coefficients, obtained via randomized SVD and DEIM (Discrete Empirical Interpolation Method), for the parametric stiffness (K), mass (M), and boundary mass (bM) core matrices arising in 2D linear elasticity problems on lattice structures defined by triply periodic minimal surfaces (e.g., Schwarz Diamond, Schoen IWP). These ROM operators enable fast approximation of finite element matrices across a 4D parameter space controlling lattice geometry, avoiding expensive full-order assembly at each new parameter configuration.