Paper Title:
Research on Horizontal Cracks in Web Plates of Rail Girder under High Frequency Impulsive Loads
  Abstract

Nowadays, bridge cranes have a tendency to be designed for big lifting capacity, wide span with high operating speed. Several long horizontal cracks have been found in web plates of the rail girder, which is terrible threat to crane’s safety. Firstly, the local stress distribution of web plates is illustrated in a semicircle form based on the elastic-plastic contact theory. Then the cyclical variation of shear stress is analyzed due to high frequency and impulsive moving wheel loads. Finally, a fatigue crack propagation model is proposed according to the strain energy density law. It is found that the shear stress and welding residual stress give rise to the fatigue horizontal crack near welding seam.

  Info
Periodical
Chapter
Chapter 3: Vibration Control and Condition Monitoring
Edited by
Paul P. Lin and Chunliang Zhang
Pages
714-718
DOI
10.4028/www.scientific.net/AMM.105-107.714
Citation
D. S. Dong, X. Mei, L. Liu, "Research on Horizontal Cracks in Web Plates of Rail Girder under High Frequency Impulsive Loads", Applied Mechanics and Materials, Vols. 105-107, pp. 714-718, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Yun Li, F.X. Che, D.A. Liu
Abstract:Multi-crack problems are deeply involved in rock-like material and rock engineering. In order to study the influences of lateral stress and...
1523
Authors: Tomáš Denk, Vladislav Oliva, Aleš Materna
Abstract:A two-parameter constraint-based fracture mechanics approach is used to explain the effect of the constraint on the apparently anomalous...
307
Authors: Jun Ru Yang, Zhao Qian Li, Chuan Zhen Huang, Quan Wei Wang
Abstract:Basing on the theoretical study on the stress intensity factor (SIF) of the crack inclined across the interface of the cermet cladding part,...
213
Authors: Zhi Ping Yin, Jiong Zhang, Jin Guo, Qi Qing Huang
Abstract:The finite element software ANSYS was employed to create a finite element model of the cracked wing beam integrated structure, and the stress...
101
Authors: Jun Ru Yang, Gong Ling Chen, Li Li Zhang, Jing Sun
VI. Analytical and Numerical Methods for Materials Processing
Abstract:Based on the theoretical study on the tip stress intensity factor (SIF) of the crack normal to and dwelling on the interface, using the...
525