This work establishes a robust concurrent multiscale optimization framework which facilitates the precise functional-grading of mechanical properties within structures, over two scales.
The novelty lies in the concurrent nature of the response surface which connects the small-scale
geometry to the large-scale domain. A concurrent implementation enables an efficient application of computational resources, such that a large number of design variables can be used
without a significant computational penalty. This framework also takes advantage of the process flexibility and precision of additive manufacturing techniques to ensure that all optimized
structures are manufacturable and suitable for an aerospace based application. A compliance
minimization case is compared against a standard topology optimization algorithm, resulting
in superior functional values and demonstrates the efficacy of the presented approach. A further application of this framework is highlighted through a target deformation case, where a
complex deformation field is obtained through simple loading conditions. Results from both of
the example problems indicate that this framework has potential within the field of adaptive
structures, to inspire a new generation of multifunctional designs.