From Aqwa to Dynamic analysis

- July 5, 2024 at 1:01 pm
  
  issacdktn
  Subscriber
  
  Hello everyone,
  I've carried out hydrodynamic analyses in Aqwa and would like to use the "time domaine pressure output" I've calculated on the structure to determine the stresses on the structure. As the load varies with time, I would logically like to carry out a dynamic analysis. I don't know which module to use or how to set up the solution.
  Could you please help me?
- July 31, 2024 at 8:28 am
  
  Mike Pettit
  Ansys Employee
  
  Hello,
  The Hydrodynamic Pressure add-on in Ansys Mechanical is designed exactly for this. The add-on reads the pressures which have been calculated by Aqwa over the hydrodynamic mesh, and maps them on to the selected surfaces of the structural model. We can also map connection loads (cable tensions, joint reactions and tether loads) as well as Morison element loads (new in Release 2024 R2) from a time domain Hydrodynamic Response analysis.
  It is only possible to transfer pressures from Aqwa to a Static Structural analysis; we do not support Transient Structural yet, though this may be introduced in the future. The time steps of the hydrodynamic analysis are considered as independent load steps in the structural analysis.
  Now that the online help is publically available, I can point you to the relevant section of the Aqwa User Manual, which explains how to set up the workflow: 8.1.3. Setting up your Workflow in Workbench (ansys.com)
  I hope this helps!
  Mike