I am modeling Bubble array acting as impact reduction liners, where bubble contains fluid in it. So, I am using hydrostatic element inside the bubble. What should be the element type I should use to mesh the bubbles?
If you are using abaqus, I suggest using for 3D analysis C3D8 and for 2D analysys CPS4. You also can use C3D8R and CPS4R with reasonable accuracy and less computational demand.