Guofu Yin

Abstract Excessive vibration in reciprocating compressor systems can threaten equipment reliability, operational safety, and production continuity. In this study, the root cause and reduction of excessive vibration in a compressor suction system were investigated through vibration testing, modal analysis, transient flow-field analysis, and buckling analysis. Vibration measurements and modal analysis demonstrated that the excessive vibration was not caused by mechanical resonance.

This is an early access version, the complete PDF, HTML, and XML versions will be available soon. Open AccessArticle by 1, 1,2,*, 3, 2 and 2 1 School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China 2 School of Mechanical Engineering, Guilin University of Aerospace Technology, Guilin 541004, China 3 School of Mechanical Engineering, Sichuan University, Chengdu 610065, China * Author to whom correspondence should be addressed.

Abstract : Notch characteristics significantly affect the fatigue performance of engineered components, for which the stress gradient effect is worth careful consideration. The traditional stress gradient analysis method based on the Coffin–Manson equation does not take into account the stress gradient influence range regarding the definition of the stress gradient correction factor, nor the high-stress gradient region, which has a greater influence on fatigue life.