Topology optimization of embedded and co-cured damping composite structure

The purpose of this work is to reduce the weight of the structure and conclude the most appropriate topology configuration proper for the embedded and co-cured damping composite structure. A topological optimization model for the embedded co-cured damping composite structure is established. For maximizing modal loss factor under the constraint of total amount of experimental substance, the work investigates the damping performance of the fiber-reinforced layer and deduces the sensitivity of modal loss factor by Modal Strain Energy (MSE) method. The best distribution of viscoelastic materials is obtained via the evolution structural optimization (ESO) method. The deleted elements in the structure correspond to the lower sensitivity elements in the sensitivity cloud published in existing document. Considerable related studies have been presented to demonstrate the relationship of structural topological configuration accompanied by the changes of structural parameters. (paper)