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Topology Optimization of Hard-Coating Thin Plate for Maximizing Modal Loss Factors by Luo, Haitao (author);Chen, Rong (author);Guo, Siwei (author);Fu, Jia (author) is a Engineering article available to read on EtoBox.

What is Topology Optimization of Hard-Coating Thin Plate for Maximizing Modal Loss Factors about?

At present, hard coating structures are widely studied as a new passive damping method. Generally, the hard coating material is completely covered on the surface of the thin-walled structure, but the local coverage cannot only achieve better vibration reduction effect, but also save the material and processing costs. In this paper, a topology optimization method for hard coated composite plates is proposed to maximize the modal loss factors. The finite element dynamic model of hard coating composite plate is established. The topology optimization model is established with the energy ratio of hard coating layer to base layer as the objective function and the amount of damping material as the constraint condition. The sensitivity expression of the objective function to the design variables is derived, and the iteration of the design variables is realized by the Method of Moving Asymptote (MMA). Several numerical examples are provided to demonstrate that this method can obtain the optimal layout of damping materials for hard coating composite plates. The results show that the damping materials are mainly distributed in the area where the stored modal strain energy is large, which is c

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Author

Luo, Haitao (author);Chen, Rong (author);Guo, Siwei (author);Fu, Jia (author)

Publisher

MDPI AG

Published

2021

Language

EN

Field

Engineering (Physical Sciences)