Ansys- two layers adhered to each other

[rajrishi_kgp]

Hello,
I am new to ansys. I am trying to model two layers adhered to each other and a force being applied to the first kayer. How do I pput in the boundary conditions for the two layers "adhered" to each other.
Thanks.
Raj

 

[minger]

Really depends on exactly what you're trying to measure. There are three methods I can think of listed here in increasing difficulty and accuracy

1. Make sure that each layer is it's own volume or area. Mesh each one separately but make sure that they share lines or areas at the split.
2. If the layers are small and you are looking for good bending results. Then consider the use of one of the solid element types which allows for multiple layers to be defined.
3. Lastly, you can go back to the first method, but make sure that they do not share lines and areas. Then connect the two region with contact elements. This allows you to define the adhesion between the two surfaces.

 

[rajrishi_kgp]

Thank you very much minger. Actually, I was wondering how to model the boundary conditions. "contact" option requires frictional coefficients to be defined but here the two layers are "rigidly" adhered to each other and I don't have any the frictional coeffs between the two surfaces. I know that there is "no slip" (perfect adhesion) under the applied force. Is there some specific boundary condition that can be used for this. How will that be done? Thanks again. I really appreciate your help.

 

[minger]

You only need frictional coefficients for frictional contact. You can also use rigid contacts (see coupling commands in the help manual).

 

[alphy]

Hello Raj,

Thank you for reaching out with your question about modeling two layers adhered to each other in Ansys. This is a common scenario in many engineering applications, and fortunately, Ansys has several tools and techniques that can be used to accurately represent this type of behavior.

To begin, you will need to define the interface between the two layers. This can be done by using the "Contact" feature in Ansys, which allows you to specify how the two layers interact with each other. You will need to choose the appropriate contact type based on the materials and geometry of your layers. Some common options include bonded, frictional, and rough contact.

Once the contact has been defined, you can then apply the appropriate boundary conditions to the first layer. This could include a force, displacement, or any other relevant loading condition. When defining the boundary conditions, make sure to select the appropriate contact region to ensure that the force is applied to the correct area.

It is also important to ensure that the mesh is properly refined at the interface between the two layers to accurately capture the behavior of the adhesive bond. This can be achieved by using the "Mesh Control" feature in Ansys and specifying a smaller element size at the contact region.

I hope this helps to answer your question and get you started with modeling two layers adhered to each other in Ansys. If you have any further questions or need additional assistance, please don't hesitate to reach out. Best of luck with your simulations!

Sincerely,