Affiliations: State Key Laboratory of Digital Manufacturing
Equipment and Technology, Huazhong University of Science and Technology, Wuhan, China | State Key Lab of Vehicle NVH and Safety Technology,
Chongqing, China | Changan Automobile Engineering Institute, Chongqing, China
Note: [] Corresponding author: Qibai Huang, School of Mechanical Science
and Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China. Tel.: +86 27 87557664; Fax: +86 27 87544175; E-mail:
qbhuang@mail.hust.edu.cn
Abstract: The potential of using topology optimization as a tool to optimize
the passive constrained layer damping (PCLD) layouts with partial coverage on
flat plates is investigated. The objective function is defined as a combination
of several modal loss factors solved by finite element-modal strain energy
(FE-MSE) method. An interface finite element is introduced to modeling the
viscoelastic core of PCLD patch to save the computational space and time in the
optimization procedure. Solid isotropic material with penalization (SIMP)
method is used as the material interpolation scheme and the parameters are well
selected to avoid local pseudo modes. Then, the method of moving asymptote
(MMA) is employed as an optimizer to search the optimal topologies of PCLD
patch on plates. Applications of two flat plates with different shapes have
been applied to demonstrate the validation of the proposed approach. The
results show that the objective function is in a steady convergence process and
the damping effect of the plates can be enhanced by the optimized PCLD layouts.
Keywords: Topology optimization, passive constrained layer damping, modal loss factor
