Viscous annular damper, impact (shock) response
Stopping stroke, peak piston force and peak hydrostatic pressure of an annular viscous damper (outer radius R₀, inner radius R₁, gap h₀) when a mass enters at a given impact velocity, including a relative-eccentricity correction.
No dedicated diagram exists in the legacy archive for response_3.htm — reuses the annular-damper photo from viscous-damper-annular-gap (damping.htm), since both calculators share the identical geometry (outer radius R₀, inner radius R₁, gap h₀), confirmed by damping.htm's own description explicitly covering "when shock loaded".
Method & references
- Impact response of an annular viscous damper: stroke, peak force and peak pressure for a mass entering at a given velocity, with an eccentricity correction to the damping coefficient.
The computation is a literal port of the original client-side JavaScript from /calculators/response_3.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.