Multiscale Reduced-Order Modeling of a Titanium Skin Panel Subjected to Thermomechanical Loading

This paper presents the formulation, implementation, calibration, and application of a multiscale reduced-order model to simulate titanium panel structure subjected thermomechanical loading associated with high-speed flight. The formulation is based on eigenstrain-based homogenization further considers thermal strain as well temperature-dependent material properties evolution laws. microstructure (i.e., at scale polycrystalline representative volume element) underlying microstructural mechanisms are directly incorporated fully coupled structural analysis, concurrently probing response microscale. proposed approach was calibrated using series uniaxial tension tests Ti-6242S wide range temperatures two different rates. then adopted study generic aircraft skin analysis focuses demonstrating capability predict not only response, but also simultaneously microscale it studies effects temperature texture response.