General Mechanical

General Mechanical

How to simulate contact stress using ANSYS APDL?

    • Nuno koh
      Subscriber

      Hello~


      I'm beginner of ANSYS APDL.


      I'm interested in contact stress.


      I have been trying for it with the text "ENGINEERING ANALYSIS with ANSYS SOFTWARE (Author: Y. Nakasone and S. Yoshimoto)".


      The Contact stress problem is described in 120page ~138page in the text.


      I have followed the text, But I can't get the solution.


      What is wrong ?


      I have added the capture image for the contact stress problem from the text.


      Plz, refer to the link below for details.


      https://drive.google.com/file/d/16KlDF9rfwiavOuHUf8gOBvPjTIbJ4Nb6/view?usp=sharing


      Thanks.

    • peteroznewman
      Subscriber

      Nuno koh,


      Below I put an image of the textbook problem you had in your link for ease of viewing by the community.



      Please reply with the full APDL code you used. Click the Blockquote button before you paste to keep the length to a minimum. Note that there is a 3000 character limit to each post.


      I hope you get a reply from someone who uses APDL code, because I use Workbench and Mechanical to solve Static Structural models.


       

    • Nuno koh
      Subscriber
    • Nuno koh
      Subscriber

      /PREP7 


      BLC4,0,0,500,-500  


      CYL4,0,500,500,-90,500,0


      SAVE


      SAVE


      FLST,2,2,5,ORDE,2  


      FITEM,2,1  


      FITEM,2,-2 


      AGLUE,P51X 


      !* 


      MPTEMP,,,,,,,, 


      MPTEMP,1,0 


      MPDATA,EX,1,,2.1E5 


      MPDATA,PRXY,1,,0.3 


      !* 


      ET,1,PLANE183  


      !* 


      KEYOPT,1,1,0


      KEYOPT,1,3,2


      KEYOPT,1,6,0


      !* 


      ET,2,TARGE169  


      !* 


      ET,3,CONTA172  


      !* 


      FLST,5,2,4,ORDE,2  


      FITEM,5,2  


      FITEM,5,-3 


      CM,_Y,LINE 


      LSEL, , , ,P51X


      CM,_Y1,LINE


      CMSEL,,_Y  


      !* 


      LESIZE,_Y1, , ,60,1/10, , , ,1 


      !* 


      FLST,5,2,4,ORDE,2  


      FITEM,5,1  


      FITEM,5,4  


      CM,_Y,LINE 


      LSEL, , , ,P51X


      CM,_Y1,LINE


      CMSEL,,_Y  


      !* 


      LESIZE,_Y1, , ,60,10, , , ,1


      !* 


      FLST,5,2,4,ORDE,2  


      FITEM,5,8  


      FITEM,5,-9 


      CM,_Y,LINE 


      LSEL, , , ,P51X


      CM,_Y1,LINE


      CMSEL,,_Y  


      !* 


      LESIZE,_Y1, , ,40,10, , , ,1


      !* 


      FLST,5,1,4,ORDE,1  


      FITEM,5,6  


      CM,_Y,LINE 


      LSEL, , , ,P51X


      CM,_Y1,LINE


      CMSEL,,_Y  


      !* 


      LESIZE,_Y1, , ,40,1/10, , , ,1 


      !* 


      MSHKEY,0


      FLST,5,2,5,ORDE,2  


      FITEM,5,1  


      FITEM,5,3  


      CM,_Y,AREA 


      ASEL, , , ,P51X


      CM,_Y1,AREA


      CHKMSH,'AREA'  


      CMSEL,S,_Y 


      !* 


      AMESH,_Y1  


      !* 


      CMDELE,_Y  


      CMDELE,_Y1 


      CMDELE,_Y2


      !* 


       


      !!!!!!!!!!  Cylinder btm surface line selection/!!!!!!!!!!


      LSEL,S, , ,       8


      !!!!!!!!!!  /Cylinder btm surface line selection!!!!!!!!!!


      !!!!!!!!!!  Cylinder btm surface node selection/!!!!!!!!!!


      NSLL,R,1


      !!!!!!!!!!  / Cylinder btm surface node selection!!!!!!!!!!


       


       


      !!!!!!!!!!  Cylinder Btm surface contact point near area selection/!!!!!!!!!!


      FLST,5,14,1,ORDE,3 


      FITEM,5,242


      FITEM,5,11043  


      FITEM,5,-11055 


      NSEL,R, , ,P51X


      !!!!!!!!!!  /Cylinder Btm surface contact point  near area selection/!!!!!!!!!!


       


      !!!!!!!!!!  Contact element define of cylinder btm surface /!!!!!!!!!!!!!


      TYPE,   3  


      MAT,       1


      REAL,  


      ESYS,       0  


      SECNUM,


      TSHAP,LINE 


      !* 


      !!!!!!!!!!  /Contact element define of cylinder btm surface !!!!!!!!!!!!!


      save


      !!!!!!!!!!  Contact element attach on cylinder btm surface /!!!!!!!!!!!!!


      FLST,5,14,1,ORDE,3 


      FITEM,5,242


      FITEM,5,11043  


      FITEM,5,-11055 


      CM,_Y,NODE 


      NSEL, , , ,P51X


      CM,_Y1,NODE


      CMSEL,S,_Y 


      !* 


      CMSEL,,_Y1 


      ESURF, ,BOT,


      CMSEL,,_Y  


      CMDELE,_Y  


      CMDELE,_Y1 


      !!!!!!!!!!  /Contact element attach on cylinder btm surface !!!!!!!!!!!!!


      save


      ALLSEL,ALL


       


      !!!!!!!!!!  Flat plate Top surface line selection/!!!!!!!!!!


      LSEL,S, , ,       3


      !!!!!!!!!!  /Flat plate Top surface line selection!!!!!!!!!!


      !!!!!!!!!!  Flat plate Top surface node selection/!!!!!!!!!!


      NSLL,R,1


      !!!!!!!!!!  /Flat plate Top surface node selection!!!!!!!!!!


       


      !!!!!!!!!!  Flat plate Top surface contact point  near area selection/!!!!!!!!!!


      FLST,5,23,1,ORDE,3 


      FITEM,5,242


      FITEM,5,340


      FITEM,5,-361


      NSEL,R, , ,P51X


      !!!!!!!!!!  /Flat plate Top surface contact point  near area selection!!!!!!!!!!


      !!!!!!!!!!  Target element define on Flat plate Top surface/!!!!!!!!!!!!!


      TYPE,   2  


      MAT,       1


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