Stresses in compressor valves of both the flexible reed as well as the rigid spring loaded ring plate type have been investigated in the past [1]. Primarily, efforts were directed toward the measurement and prediction of dynamic bending stresses that occur in the reeds or plates flexing under operating loads. An important stress in this context was found to be the so-called overshoot stress which occurs when the reed strikes a stop in its opening travel (Fig.1).
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