2009•Zhongguo tiedao kexueRequires access

Fatigue Life Prediction on the Side Frame of ZK2 Bogie of the Speed-Increased Freight Car

Qingqun Lan

Abstract

The dynamic model of C64K freight car nonlinear system was set up in this paper and based on this the simulation study was carried through on the operation process of the freight car on Shenyang-Dalian line.The time history curves of the dynamic load acted on the side frame of ZK2 bogie were obtained.By establishing the finite element model of the side frame of ZK2 bogie,the stress of each part under the unit load was calculated.Accordingly,the probability fatigue stress spectrum of the dangerous section of the bogie side frame on typical line was further obtained,which provided evidence for predicting the fatigue life of the side frame of ZK2 bogie.The results show that the shortest point of fatigue life is on the pedestal of side frame,the fatigue life under 95% reliability is 689×104 km and under 99% reliability is 490×104 km.

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Key concepts: Bogie, Structural engineering, Frame (networking), Engineering, Reliability (semiconductor), Finite element method, Automotive engineering, Mechanical engineering