We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.

Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › FSI: Error 40746 (SOL+746) information › Reply To: FSI: Error 40746 (SOL+746) information

August 20, 2024 at 7:53 pm
arnau994
Subscriber

Hello Reno,

Thank you for your message, below I am replying each of your messages.

I am using LS-Dyna 11.2, double precision and in SMP configuration. In theory, I am only running the essential keywords for this model (I have followed the tutorial on the LS-Dyna examples webpage "Intermediate: FSI tutorial flap"), and have only changed the mesh input for both the Fluid and Structure, as well as adding the fixation constraints on the correspondent nodes. However, I have used a laminate material MAT58 for the whole structure. Tomorrow first thing in the morning will try to use a common Aluminum with MAT1 and check if I get the same error.

I also tried to separate the model, but I have only run the ICFD part. The ICFD simulates successfully both explicit and implicit. I will also try to run the structural part alone, but I am not sure how to do it as there are no loads applied to the model.

I will keep you updated regarding the material changes and the strucutre-only simulation. In the meantime, I will be very grateful to hear from the developer.

Thank you very much for your time Reno.
Arnau