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

Dear colleagues,

We are happy to share a recent study on Multiscale Reduced-Order Modeling of a Titanium Skin Panel Subjected to Thermomechanical Loading, where we concurrently couple the response at a polycrystalline microstructure to that of a airplane panel structure, thorugh an eigenstrain-based reduced-order modeling technique. For more detials, see https://doi.org/10.2514/1.J060497, and an author's copy is aviable here: https://www.researchgate.net/publication/345654458_Multiscale_Reduced-Or....

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

Thank you for your interest.

Best,

Xiang