Thermo Structural Design of Airframes

Ceramic randoms are critical components in aerospace applications, providing electromagnetic transparency while withstanding high thermal and mechanical loads. This study examines the structural integrity and thermal response of a ceramic redone bonded to a metallic bulkhead using high-temperature adhesive. The key challenge addressed is the mismatch in thermal expansion coefficients and stress concentrations at the adhesive interface under combined thermal and mechanical loading. Using Creo Parametric and Creo Simulate, a 3D model of the assembly was developed to perform both structural and thermal analyses. Simulations included axial and normal loading conditions representative of flight environments, along with steady-state thermal conditions up to 1000°C. Results showed that thermal gradients induced differential expansion between ceramic and metal, leading to significant interfacial stresses, especially at the bond edges. Structural analysis indicated that normal loads introduced higher localized shear stresses compared to axial loads, potentially leading to adhesive failure if not properly accounted for. The adhesive layer's performance was sensitive to thickness and uniformity, affecting overall stress distribution. In conclusion, the combination of ceramic, metal, and high-temperature adhesive performs adequately under defined conditions, but careful attention to bonding techniques and material compatibility is essential. Creo proved effective for integrated thermal structural analysis and serves as a reliable tool for design optimization in high temperature aerospace structures