Nonlinear Solid Model for FSI

[Arumd86]

Hi

I am using blastfoam for numericaly simulate shocktube experiments that are conducted as part of my PhD. The structure is a deformable plate and it is subjected to blastwave conducted through shock tube experiments.

I was able to create models based on flap problem and perform simulation and following are the issues and observation on my simulations using blast foam. Any technical guidance is highly appreciated

1. There is huge deformation between the numerical simulation and experiments. In experiment, the maximum deformation in blastFoam is less compared to the experimental deformation.

2. Right now, using LinearTotalDisplacement and linearJohnsonCookPlastic for the solid models. Would like to know if nonlinear material models are available for the large deformation fsi problems. Any suggestion on suitable models for large deformation fsi problems. Following are the observations for different models
   solidModel nonLinearUpdatedLagrangian; - No deformation occuring with this model
   solidModel unsNonLinearGeometryLagrangian; - No deformation occuring with this model
   solidModel explicitUnsLinear; running but termination in very few time steps
   solidModel nonLinearTotalLagrangianTotalDisplacement; //running but termination in very few time steps
   solidModel nonLinearTotalLagrangian; //simulation running but no deformation

3. For the analysis, the pressure vs time curve is provided as inlet boundary condition. So for the AMR, a separate fluid zone is created near the solid model with meshrefinement. Mesh refinement is not occuring in any region of the model.

4. The simulation is working only with the following "dynamicFvMesh dynamicMotionSolverFvMesh;". With the dynamicFvMesh movingAdaptiveFvMesh;, refiner is undefined error occurs.

1.Experiment_FSI_Baffle_SmallDomain.zip

Thanks
Arumugam