MSR/ressources/PCLD.md

10 lines
728 B
Markdown
Raw Permalink Normal View History

2024-10-15 08:56:10 +02:00
([[Context articles descriptions#Passive Constrained Layer Damping, SotA|source]])
2024-09-20 17:41:55 +02:00
2024-09-25 14:50:53 +02:00
*Passive Constrained Layer Damping*
2024-09-20 17:41:55 +02:00
2024-09-25 14:50:53 +02:00
[[Viscoelasticity|Viscoelastic materials (VEM)]] dissipate energy under a transient deformation. Used in a form of a layer that is either freely attached (UCLD ie *unconstrained layer damping*) or in a sandwich (CLD/PCLD ie *constrained layer damping/passive constrained layer damping*).
2024-09-20 17:41:55 +02:00
2024-09-25 14:50:53 +02:00
In most of the analyses, extensional/compressional strains of the viscoelastic layer are not taken into account since the damping comes mostly from the shear strain. However, with a thick layer, compressional damping cannot be neglected.
2024-09-20 17:41:55 +02:00
2024-09-25 14:50:53 +02:00
The mathematical models are either [[Finite element method|FE]] or analytical.