Learning Forum

[Jacopo Bardiani]

Is there the possibility in ANSYS Mechanical to perform an Explicit Dynamic analysis in order to apply an air blast load (free-field) to a structure such as the picture attached? I don't want to do a CEL (coupled eulerian-lagrangian approach) analysis, but something similar to the CONWEP approach possible in ABAQUS CAE (the tool apply a time-varying pressure to the structure). in order to take into account an air blast load).

 

[Chris Quan]

The Air-Blast Load boundary condition is available in Autodyn Compoenent GUI or Autodyn Standalone system. It is not available in Explicit Dynamics system.

[Jacopo Bardiani]

Hi Chris, thank you for your reply!

Ok! But you mean a CEL analysis in Autodyn? Or I can create only the lagrangian part (structure) and then select the detonation point and the features of the charge?

[Chris Quan]

No, it is not Euler/Lagrange coupling. It is a pressure boundary condition, where pressure is calculated by charge weight (input) and its distance to the element center (automatically calculated by the solver).

[Syed Basit Raza Naqvi]

Hi All,

Can anyone help me to get pressure-time graph or pressure-distance graph in autodyn, I've performed simulation in which fragments moves away. i want to know the distance travelled by the fragments and internal energy of the fragments. And also tell me what is the characteristic length in below image?

[Erik Kostson]

Hi
As this is unrelated to the original post, and not the correct forum to post this, I would suggest posting your question as a new question under the explicit dynamics forum here: /forum/forums/forum/discuss-simulation/ls-dyna/
All the best
Erik