Researcher, NASA Glenn Research Center
DEStech Young Composites Researcher Award
Presidential Award for Early Career Scientists and Engineers
Virtual testing is important for the development of advanced materials and structures. Multiscale modeling enables physics-based simulation of materials and structures incorporating the relevant phenomena at the appropriate length scale. The NASA Multiscale Analysis Tool (NAMSAT) serves as a state-of-the-art, “plug and play,” massively multiscale analysis (MMA) platform for hierarchical materials and structures utilizing high performance computing (HPC). NASMAT supports multiscale analysis spanning an arbitrary number of length scales. Moreover, the micromechanics theory deployed at each scale is also arbitrary, allowing for variable fidelity within the multiscale hierarchy and resulting in computationally efficient simulations. NASMAT contains a library of constitutive laws and damage theories, enabling fully-integrated (homogenization and localization), non-linear analysis of materials and structures. Multiscale structural analysis is achieved through interoperability with 3rd party finite element software, and it has been demonstrated that NASMAT is capable of solving industrial-sized engineering problems (500K+ multiscale elements). In this presentation, an overview of multiscale modeling and the NASMAT software architecture is presented along with scaling performance on HPC. In addition, several examples are presented including validation of the micromechanics theories, failure predictions of 3D woven composites, prediction of the thermoelastic properties of thermoplastics polymers, non-linear modeling of dry fabrics, simulation of polycrystalline metals and simulation of a full-scale ceramic matrix composite turbine vane.