How apply periodic boundary conditions ?

Pauline_78 · March 29

Hello,

I am a student in Master 2 in Biomedical Engineering at the University of Liège (ULiege Ansys customer number : 1047691) . Currently I’m doing my master thesis. For this, I have to perform some simulations in Ansys (2019 R1). My model is an unit cell, called orthogonal unit cell which I created in SpaceClaim and meshed afterwards.

I would like to impose periodic boundary conditions on it :

I did some research and I have the License of Ansys which allows me to use periodic boundary conditions. To create periodic boundaries I am trying to copy using the tool “Copy mesh. However, when I use “Copy mesh” I get the warning message: “Bodies cannot have more than one anchor face for a mesh copy”. But I didn’t impose more than one anchor face… So I don’t understand the error I am getting. Can you help me please ?

1shan · March 31

Hello @Pauline_78,

I am not sure what process you are following but I recommend using the cyclic Region object. When a cyclic objects exist in the symmetry folder, match face mesh controls will automatically be created internal to the mesher. Also mesh copy is used for transferring mesh from one body to another and not the same one. You can use match control instead.

Have a look at the following links - 1) https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v201/en/wb_sim/ds_cyclic_sym_considerations.html

2) Mesh Copy Control (ansys.com) 3) Cyclic Match Control (ansys.com) 4) tutorial video https://www.youtube.com/watch?v=EBa7_R6cVxc

Regards

Ishan.

https://forum.ansys.com/discussion/3978/how-to-access-the-ansys-online-he

How apply periodic boundary conditions ?

Answers