Multi-material topology optimization for maximizing structural stability under thermo-mechanical loading

Mechanical structures are often simultaneously subjected to thermal and mechanical loading, both of which can lead buckling failure. Developing efficient structural forms with better capacity for stability is important keep safe. This study aims optimize by using a density-based topology optimization scheme. Instead treating the loadings as single coupled part in linearized analysis, effects decoupled, allows separately analyze aspects induced or loading. Two models based on decoupled analysis developed respectively maximize critical load factor loading under specified Further, three-phase material model, multi-material scheme employed active made actuating materials prestressed containing components. The actuation mimicked material. sensitivities objective functions constraints derived through adjoint technique, method moving asymptotes (MMA) solve problems. Numerical examples adopted verify effectiveness proposed approach.