Numerical method to assess the stress state and gradients induced by thermo-oxidation in adhesively bonded joints for aircraft engine applications

This paper presents a finite element numerical method to assess the stress state and gradients induced by thermo-oxidative ageing in Ti/epoxy/Ti adhesively bonded joints for aircraft engine applications. The is dealing with couplings between thermal, chemistry mechanics occurring during high-temperature of joint, taking into account post-curing stresses, under mechanical loading. Calculations are carried out on classical single lap joint configuration. An assessment thermo-oxidation at each step process out. It shown that within adhesive results from superposition several physical fields strongly affected gradients. Moreover, stresses cannot be neglected when compared yield stress. Numerical analyses paramount importance complex related multiphysics design.