Analysis of virtual fatigue life of welding structure of tracked vehicle based on load spectrum. Issue 1 (August 2021)

• Record Type: Journal Article
• Authors: Bao, Ke; Dai, Jin; Liu, Yue; Zhang, Qing
• Is Part Of: Journal of physics. Volume 1986:Issue 1(2021)
• Publication Date: 2021-08
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1986/1/012049
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Welding has become the main processing method of the supporting structures on tracked vehicles. The accurate evaluation of fatigue life of welding structures is of great significance significant to the reliability of tracked vehicle. The whole analysis process, based on strengthened load spectrum and structural stress method, is proposed in the study to predict the fatigue life of welding structures. Initially, the road-load spectrum of different conditions was obtained by vehicle tests. Then, the data which had been preprocessed were compressed based on pseudo-damage editing. Furthermore, the load spectrums were extrapolated and equivalent to program-loaded spectra according to the non-parametric rain-flow extrapolation method. On the other hand, the finite element model of the welding structure of the tracked vehicle was established to calculate the structural stress at the welding seam