Zero-shear lower wall in a translating and squeezing finite gap

The horizontal force on the lower wall vanishes when

U = 6 V \frac{⟨ x h ^{- 2} ⟩ - ⟨ h ^{- 2} ⟩ ⟨ x h ^{- 3} ⟩ / ⟨ h ^{- 3} ⟩}{4 ⟨ h ^{- 1} ⟩ - 3 ⟨ h ^{- 2} ⟩ ^{2} / ⟨ h ^{- 3} ⟩} .

 Ancestors (10)