How accurate is it to model an adhesive as a standard CAD component with adhesive material properties?

Adrien Simon

Hi community,

I would like to simulate adhesive connections between several shell components to benchmark different attachement geometries.

As a first approximation, I was thinking of modelling the adhesive as a thin shell component with adhesive material properties in a linear static simulation, instead of using HyperMesh adhesive connectors.

How accurate would such a simulation be? Can it give a good first approximation?

Thanks!

Thomas Quenaon_21507

Hi Adrien,

Are you aware that OptiStruct is now able to simulate cohesive elements ? Here is a link for this in the OptiStruct help:

file:///C:/Program%20Files/Altair/2020/help/hwsolvers/os/topics/solvers/os/cohesive_zone_model_intro_c.htm?zoom_highlightsub=cohesive

BR-

Thomas

Adrien Simon

Thomas Quenaon_21507 said:

Hi Adrien,

Are you aware that OptiStruct is now able to simulate cohesive elements ? Here is a link for this in the OptiStruct help:

file:///C:/Program%20Files/Altair/2020/help/hwsolvers/os/topics/solvers/os/cohesive_zone_model_intro_c.htm?zoom_highlightsub=cohesive

BR-

Thomas

Hi @Thomas Quenaon,

Are these better than adhesive connectors?

Is it also available in HyperMesh 2017? This is the version I have…

Thomas Quenaon_21507

Adrien Simon said:

Hi @Thomas Quenaon,

Are these better than adhesive connectors?

Is it also available in HyperMesh 2017? This is the version I have…

Adhesive connectors are HyperMesh entity to create 3d elements connecting several component together. It create basics 3d elements of connection.

This is used for example if you want to model a glue seal between sheet panels. But no dammage can occur in thos elements

In the other hand, cohesive elements are used to model Adhesive and bonded interfaces and corresponding crack initiation and propagation.

Cohesive elements are only available in 2020 release.