AUTHOR=Cao Lianmin , Yan Ping , Xi Wenxian , Zhang Xiaowei , Jin Xin , Yang Hongjuan 
  
TITLE=Study on the bearing characteristics of overrun hydraulic support under impact loading
  
JOURNAL=Frontiers in Earth Science
  
VOLUME=Volume 11 - 2023
  
YEAR=2023
  
URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2023.1180389
  
DOI=10.3389/feart.2023.1180389
  
ISSN=2296-6463
  
ABSTRACT=In order to study the changing law of stress under the impact load of overrun hydraulic stent, the rigid-flexible coupling numerical model of the stent was established by using multi-body dynamics simulation software ADAMS. Through Hypermesh module, the stent is flexibilized, and the impact load is applied to different positions above the front roof beam of the stent, and the dynamic response characteristics of the column and articulation point at different positions and different strengths are obtained. The results show that when the impact load is applied to different positions of the front roof beam, the steady state response force of the column shows an "M" distribution, and the maximum steady state response force of the column is 547kN at point (1, 6); when the impact load is applied to both sides of the front roof beam, the articulation point has a larger response, with the maximum simple harmonic response coefficient of 0.75 and the maximum excitation response coefficient of 0.28. The maximum response coefficient of 0.28 is the maximum simple harmonic response coefficient of 0.75. excitation response coefficient is 0.28; when the impact loads of different strengths act on the whole front roof beam, the force acting on the column as well as the pin shaft at the articulation will produce a larger impact, which reduces the adaptability, so it can be considered to change the roof stress conditions through high-pressure water injection and other ways to control the gradual and slow release of the roof stress.