Related Experiment Video
Updated: Feb 25, 2026

A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System
Published on: June 12, 2019
Fatigue Behavior of a Box-Type Welded Structure of Hydraulic Support Used in Coal Mine
Xiaohui Zhao1,2, Fuyong Li2, Yu Liu3
1Key Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun 130025, China. lfyzmj@gmail.com.
Abstract:
Hydraulic support is the main supporting equipment of the coal mining systems, and they are usually subjected to fatigue failure under the high dynamic load. The fracture positions are generally at welded joints where there is a serious stress concentration. In order to investigate and further improve the fatigue strength of hydraulic support, the present work first located the possible position where fatigue failure occurs through finite element analysis, and then fatigue tests were carried out on the different forms of welded joints for the dangerous parts. Finally, Fatigue strength-life (S-N) curves and fracture mechanism were studied. This research will provide a theoretical reference for the fatigue design of welded structures for hydraulic support.
Related Concept Videos
Fatigue Strength of Concrete
Fatigue
Frames: Problem Solving II
Machines: Problem Solving II
Frames: Problem Solving I
Behavior of Concrete Under Compressive Load
As the concrete specimen fractures under...

