ANALYSIS OF A CREEP DEFLECTION OFA ZINC PRESSURE REGULATOR VALVE

PURPOSE: Evaluate the ability of a valve to maintain a seal under long term creep deflection

An FEA model was developed to stimulate a zinc valve under long term creep. Creep properties were obtained from

literature and converted to rational polynomial creep equations for ANSYS. Internal spring forces and uniform

working pressure loads were applied, and critical stresses were checked in the valve body. A long term creep

analysis was conducted under these loads to evaluate the displacements as a function of time, and thus the valves

ability to maintain a seal over time.

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