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To better understand the factors that affect reciprocating compressor valve performance and life, GMRC, BP, and SwRI have initiated a program to systematically investigate the physical behavior of valve plates during compressor operation. A reciprocating compressor’s valve life is generally considered to be a function of the plate’s cyclic kinematics behavior and material properties. Thus, transient stresses of valve plates were measured in controlled single impact tests. By mounting a complete valve assembly in front of a burst-membrane shock-tube and instrumenting the valve with multiples optical probes, detailed 3-D motion and plate transient strain data for controlled single impact events of a valve plate were obtained. The transient strain data for these single impact tests, determined from three strain gauges strategically located on the valve plate, was correlated to the kinematics behavior of the plate. Results from these tests were then employed to calibrate and verify a dynamic finite element calculation of valve plate single impact events. The measured and the finite element model results were found to agree within the measurement uncertainty. Parametric finite element studies were performed to determine the effects of plate angle, impact velocity, and plate position on the transient stresses and to develop some generalized relationships for plate motion versus transient stresses. These relationships, in combination with plate material properties, can be employed to predict the plate life based on operating conditions and design.
Your Price $195.00
List Price $195.00