| Geological Publishing House, Institute of Exploration Technology, Chinese Academy of Geological Sciences | Host |
| Citation: |
YANG Dong-dong, LI Guo-lin, JI Tian-kun, SUN Qiang, PENG Jian-ming. Research on Disc Spring Buffering the Backward Impact of Piston of Liquid-Jet Hydraulic Hammer Based on LS-DYNA[J]. DRILLING ENGINEERING, 2016, (5): 37-40. doi: 10.3969/j.issn.1672-7428.2016.05.008
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Research on Disc Spring Buffering the Backward Impact of Piston of Liquid-Jet Hydraulic Hammer Based on LS-DYNA
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Abstract
In order to reduce the damage to fluidic element caused by stress waves from impacting cylinder in a return-stroke of the fluidic hydraulic hammer piston to prolong the life of the fluidic element, a disc spring buffer structure in the cylinder was proposed to absorb the striking energy of hammer stroke.The simulation analysis was carried out on the piston return-stroke by the means of LS-DYNA display dynamic analysis to study the effect of the disc spring buffer on the stress state of bi-stable fluidic amplifier.The results show the feasiblility of disc spring buffer structure in the actual work of hy-draulic hammer, the maximum stress can be decreased by 40%~57%in bi-stable fluidic amplifier and the stress state of fluidic element is effectively improved.-
Keywords:
- liquid-jet hammer /
- bi-stable fluidic amplifier /
- disc spring buffering /
- LS-DYNA /
- stress state
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Citation
YANG Dong-dong, LI Guo-lin, JI Tian-kun, SUN Qiang, PENG Jian-ming. Research on Disc Spring Buffering the Backward Impact of Piston of Liquid-Jet Hydraulic Hammer Based on LS-DYNA[J]. DRILLING ENGINEERING, 2016, (5): 37-40. doi: 10.3969/j.issn.1672-7428.2016.05.008
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