Effective strain range-based prediction and analysis of the fatigue life of pipette shaft seal ring

The accuracy of nucleic acid extraction and diagnosis depends on the sealing performance pipetting device. rubber seal ring at front end pipette shaft is a critical component for ensuring In this study, an accurate prediction analysis were made fatigue life ring. ABAQUS was used to simulate assembly process disposable tip, dangerous cross-section segments rings preliminarily identified according stress nephogram. Based continuum damage mechanics theory, model built where effective strain taken as parameter, calculated. By observing failed in actual use, it found that worn positions same sites shortest-lived node segments, thus verifying analysis.