LS Dyna

LS Dyna

Topics relate to LS-DYNA, Autodyn, Explicit STR and more

Need assistance on how to apply line load on beam


    • mmia1


      I have modeled three straight pipes. Each pipes were modeled with 2 beam elements. Now I want to apply the calculated water load as line load over these elements. I inititally thought to apply this as *LOAD_SEGMENT_SET where *SET_SEGMENT were defined for the beam elements. In LSDYna manual it is said "For two-dimensional geometries, a segment is a line defined by two nodes". So, what should I put in N3 and N4. If I put zero then model puts warning message and not run. Then I tried to define like below. Also, the water load needs to be applied in global X-  direction. Do you think *LOAD_NODE_POINT will be good idea but in that case, I have to apply nodal loads carefully as different nodes will be having different loads (corner one will have F*0.5 and center one will ahve F*1). Thanks.

      $#     sid       da1       da2       da3       da4    solver      
               1       0.0       0.0       0.0       0.0MECH
      $#      n1        n2        n3        n4        a1        a2        a3        a4
               1         2         1         2       0.0       0.0       0.0       0.0
               2         3         2         3       0.0       0.0       0.0       0.0
              15        16        15        16       0.0       0.0       0.0       0.0
              16        17        16        17       0.0       0.0       0.0       0.0

    • Imtiaz Gandikota
      Ansys Employee

      *LOAD_SEGMENT is to apply pressure load over a triangular or quad segments. Maybe check *LOAD_BEAM. 

Viewing 1 reply thread
  • You must be logged in to reply to this topic.