The authors study experimentally the impact on rigid surfaces of soft porous solids saturated with liquid (hydrogel balls and liquid-saturated foam balls) where three dissipative mechanisms are involved: capillary adhesion, viscous dissipation in the liquid film between the ball and the substrate, and poroelastic dissipation due to porous flow inside the ball.
- Benjamin Gorin
- Neil M. Ribe
- Hamid Kellay