ealsticity

Hello

I am using ANSYS for structural ANALYSIS, I want to add PML or absorbing boundary condition in my simulation:

I have a look at help of ansys, there is absorbing boundary for Electermagnetic domain , Structural fluid ,...

I am not able to find the absorbing boundary condition only for structural domain .

Please can sb help me to know that I can add absorbing boundary condition for structural domain in ANSYS?

the second question:when I want to add complex value as an input how it will be possible in ANSYS,