A novel viscoelastic damping treatment for honeycomb sandwich structures

摘要: Abstract Constrained layer dampers (CLD) are in widespread use for passive vibration damping, applications including aerospace structures which often lightweight. The location and dimensions of CLD devices on has been the target several optimisation studies using a variety techniques such as genetic algorithms, cellular automata, gradient techniques. recently developed double shear lap-joint (DSLJ) damper is an alternative method can be placed internally within structures. performance DSLJ compared parametric study with that beam plate under both cantilever simply supported boundary conditions, finite element analysis. objective was to determine configuration produced highest modal loss factor amplitude reduction least added mass, would important lightweight applications. tend more mass efficient terms cantilevered structure, competitive works well because it potential magnify global flexural deformation into viscoelastic effectively than traditional dampers.