I am using FSI with piezoelectric beam as structure. For less value of input velocity in fluid domain my analyses gets completed. But while increasing the input velocity my job gets aborted midway. What must the problem?. "NLGEOM" is kept on for beam.

2)Also, I am getting this warning "There is zero charge everywhere in the model based on the default criterion. Please check the value of average CHARGE during the current iteration to verify that the CHARGE is small enough to be treated as zero. If not, please use the solution controls to reset the criterion for zero CHARGE". Can this warning lead to error of my job?How to avoid warning of such kind?

Abaqus ​​​​​​​