Topology Optimization of Passive Constrained Layer Damping with Partial Coverage on Plate
TLDR
In this article, the authors used topology optimization as a tool to optimize the passive constrained layer damping (PCLD) layouts with partial coverage on flat plates, where the objective function is defined as a combination of several modal loss factors solved by finite element-modal strain energy (FE-MSE) method.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.read more
Citations
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Multi-scale structural topology optimization of free-layer damping structures with damping composite materials
TL;DR: In this article, a concurrent topology optimization method for the design of the multi-scale free-layer damping structures with damping composite materials is adopted to find the optimal layout on both macro and micro scales.
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A novel viscoelastic damping treatment for honeycomb sandwich structures
TL;DR: The double shear lap-joint (DSLJ) damper is an alternative method for vibration damping, and can be placed internally within structures as discussed by the authors, and it has the potential to magnify global flexural deformation into shear deformation more effectively than traditional constrained layer dampers.
Journal ArticleDOI
Multiobjective optimization for vibration reduction in composite plate structures using constrained layer damping
José Firmino Aguilar Madeira,José Firmino Aguilar Madeira,Aurélio L. Araújo,C. M. Mota Soares,C. A. Mota Soares +4 more
TL;DR: In this article, a multiobjective optimization approach to minimize weight and maximize modal damping in laminated composite panels with Constrained Layer Damping (CLD) treatments is presented.
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Multiobjective Optimization of Constrained Layer Damping Treatments in Composite Plate Structures
TL;DR: In this article, the optimal design of laminated composite panels with constrained layer damping (CLD) treatments is addressed, where the objectives are simultaneously to minimize weight and maximize modal damping.
Journal ArticleDOI
Topology optimization of frequency dependent viscoelastic structures via a level-set method
G. Delgado,Mohamed Hamdaoui +1 more
TL;DR: This work is devoted to the application of the level-set method for topology optimization of viscoelastic structures to maximize the structure capacity to dissipate energy measured here by the modal loss factor of the first vibration mode.
References
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