Topology Optimisation of Passive Constrained Layer Damping - A Comprehensive Review

Solomon Raj Kumar S, P. Nallasamy

Abstract: The developments made in the passive constrained layer damping (PCLD) treatment which is intended to control structural vibration are discussed in this paper. The paper begins with a brief review of the literature on passive damping methods employing viscoelastic materials on PCLD. Viscoelastic material is sandwiched in the CLD, which is located between the upper constraining layer and base layer. Cutting the constrained and constraining layer known to be partialization can improve the outcomes of the CLD's damping efficiency. Complete coverage of the constrained damping layer will add extra mass, causing wastage of materials, and would not be able to significantly enhance the damping performance of the composite structure. In order to get the best distribution of the constrained damping layer, topology optimization strategies are suggested in this article. Various optimisation methods proposed by many researchers to improve the damping efficiency in PCLD are presented.

Keywords: layer damping, optimization, partialization, optimal solution