Surface Pressure

Surface pressure is an explicit force distribution per unit area, that is applied on every face of a cloth.

Because this force is explicit, it has to remain small so it does not destroy the stability of the simulation.

The direction of the resulting force is given by the face normal and the magnitude by the area times the pressure. The sign of the pressure associated with the winding order of the faces defines the direction of the pressure force.


  • Remember to start with a small Surface Pressure value and tune up to the maximum allowed by the explicit nature of this force. Sub-stepping can help increase the range of stable pressure values.