Topology optimization of anisotropic constrained damping structures based on ESO method
نویسنده
چکیده
The topology optimization design of structures with anisotropic constrained damping layers (ACDL) is investigated in present paper. The evolutionary structural optimization (ESO) method is employed to find the optimal layout of ACDL with aim to maximum the modal damping loss factor of the sandwich structure. Modal strain energy (MSE) method is used to calculate the damping loss factor of whole sandwich structure, and the sensitivity is analyzed. Optimization topology configuration of ACDL is obtained under the constraint of total amount of ACLD materials in terms of percentage added weight to the base structure. The merit of constrained damping treatment is evaluated quantitatively by damping efficiency formula introduced.
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