General Mechanical

General Mechanical

Arnab Chakraborty

    • cnac

      Dear All

      I am trying simplified micro-model for a masonry wall in ANSYS Workbench. I am using Frictional Contact between the Masonry element with following properties:

      E = 9250 N/mm2

      Coeff of Friction = 0.6

      Normal Stiffness, FKN = 1.0

      therefore programme is calculating Normal Stiffness = 9250 N/mm2

      However the programme also assigning the Tangential Stiffness, FKT = 1.0

      hence the tangential considered for the analysis = 9250 N/mm2

      How do I change the FKT = 0.5? in Workbench.

      Any help will be very much appreciated.


      Kind regards 

    • Aniket
      Ansys Employee

      Please check if the following thread helps.

      basically you need to use rmodif command in a command snippet under your contact

      more info at


      How to access Ansys Online Help Document

      How to show full resolution image

      Guidelines on the Student Community

      How to use Google to search within Ansys Student Community



    • cnac

      Thank you, I have managed to model with RMODIF.

      I want to model this separation using ANSYS contact

      Actual scenario


      However, I am getting a convergence problem and can only get 

      Partial Output


      i.e., no separation is obtained, only sliding is occurring.


      Any help will be greatly appreciated.


      Kind regards


    • ajaygawde

      My project on coupled filled structural analysis of hot box of pressure vessel. i have error in structural analysis about stress plots in ANSYS APDL. Error message is " the requested data s is not available, the plnsol commanad is ignored. Can anyone help me.

    • Aniket
      Ansys Employee
    • cnac

      Hello Aniket


      you mean this one

    • Wenlong
      Ansys Employee

      Hi cnac,

      I agree with Aniket that cohesive contact debonding should be able to model such behavior. You can assign bonded contact between the mansory and the contact behavior is controlled by traction-separation law. And the contact will be deactivated to allow cracking when the failure criterion is met in the cohesive law. (More info can be found here:

      I've done similar research by applying cohesive elements to every element boundary to model concrete cracking, and below are some images.




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