Details

Autor(en) / Beteiligte

• CHU, Deying

Titel

THEORY AND EXPERIMENT ON THE VISCOUS HEATING OF FLUID DAMPER UNDER SHOCK ENVIRONMENT

Ist Teil von

• Chinese journal of mechanical engineering, 2008-06, Vol.21 (3), p.66-71

Ort / Verlag

State Key Laboratory of Vibration, Shock and Noise, Shanghai Jiaotong University,Shanghai 200240, China%Chinese Navy Warship Research Center,Beijing 100037, China

Erscheinungsjahr

2008

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• A specially designed fluid damper used as negative shock pulse generator in the shock resistance test system to dissipate the shock input energy in transient time duration is presented. The theoretical modeling based on the three-dimensional equation of heat transfer through a fluid element is created to predict the viscous heating in the fluid damper under shock conditions. A comprehensive experimental program that investigates the problem of viscous heating in the fluid damper under different shock conditions is conducted on the shock test machine to validate the analytical expression. Temperature histories for the fluid within the damper at two locations, the annular-oriflce and the-end-of stroke of the damper, are recorded. The experimental results show that the theoretical model can offer a very dependable prediction for the temperature histories in the damper for increasing input velocity. The theoretical model and experimental data both clearly indicate that the viscous heating in the damper is directly related to the maximum shock velocity input and the pressure between the two sides of the piston head.