#description

# optimization of carbon-epoxy plates with a viscoelastic layer
*2020*
[online ref](https://www.tandfonline.com/doi/abs/10.1080/15376494.2021.1882626)
[[Article_Taylor_and_Francis_vfinal.pdf|local ref]]

**basis of the work**

*both experimental and numerical analyse*

This papers explore the use of [[PCLD]], its goal is to optimise the damping (of the dynamic response) from the [[Viscoelasticity|viscoelastic]] layer while keeping some stiffness (at least half of the undamped plate), by studying the size and placement of the bridges between the two external layers of carbon-epoxy.

The bridges are made by puncturing the viscoelastic layer with holes so that some of the epoxy matrix fills them.

The simulations where made using the [[Finite element method]], with 2D elements for the carbon-epoxy layers and 3D elements with a [[Neo Hookean Behavior Law|neo-hookean visco-hyper-elastic behavior law]] for the inserted layer. The simulations are accurate with the experiments.

The paper also points out an issue with the manufacturing of the bridges : the epoxy does not fill the holes fully, so there are bubbles or gaps, diminishing the properties of the material.