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LS Dyna

LS Dyna

Topics related to LS-DYNA, Autodyn, Explicit STR and more.

DATABASE_FSI results issue. FSI analysis, S-ALE model

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    • s281303
      Subscriber

      Goodmorning,

      I'm analysing the impact of a BEAM element with MAT_ELASTIC on the water. 

      I need the local pression in different points of the body. I've definied with DATABASE_FSI several different points but importing the .dbfsi results file in post processing I get the same plot for all the points. 

      The odd points I've defined don't plot any results, just a straight line at 0. 

      What I'm doing wrong? Is there another keyword to define?

    • ErKo
      Ansys Employee

      Hi

      You said:

      '

      Goodmorning,

      I'm analysing the impact of a BEAM element with MAT_ELASTIC on the water'

      Can you explain more (e.g., are you trying to see the influence of the water on the vibration of a beam?)

      All the best

      Erko

    • s281303
      Subscriber

      I want to evaluate the local stresses on the hull for the thickness sizing.

      I used the 2D model with S-ALE formulation, the bottom of the hull is definied as MAT_ELASTIC and the other two beams with a MAT_RIGID, same properties.

      I need to get the local pressure on the bottom of the hull with different angles and velocities.

      Water and air are definied with EOS_LINEAR_POLYNOMIAL and MAT_NULL.

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