Application of isogeometric analysis in the coupled thermo-mechanical field of functionally graded materials

Abstract Isogeometric analysis (IGA) has gained prominence in the investigation of FGMs applied to structural problems, owing to its ability to precisely represent complex geometries and significantly improve solution accuracy. This research employs NURBS-based isogeometric analysis to systematically investigate the stability response of FGM plates under combined thermomechanical loading. The proposed framework integrates FSDT with von Kármán’s nonlinear strain assumptions, enabling accurate characterization of large deflection behavior in FGM structures. Through numerical discussion, we verify the accuracy of the model for FGM plate prediction, providing an effective tool for analyzing its behavior in the thermo-mechanical coupling field.