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Impact Response of the Tail Beam Jack Based on Bidirectional Fluid-Structure Coupling Simulation.
Yanpeng Zhu1, Qingliang Zeng1,2, Lirong Wan1
1College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
ACS Omega
|May 8, 2023
Summary
Impacts on mining jacks from coal rock collapse can cause failure. Analyzing pressure and velocity signals from both jack cavities, especially in motion, aids in identifying collapses and preventing jack damage.
Area of Science:
- Mining Engineering
- Mechanical Engineering
- Fluid Dynamics
Background:
- Coal rock collapse in top coal caving mining causes severe impacts on tail beam jacks.
- These impacts can lead to jack failure, disrupting mining operations.
Purpose of the Study:
- To investigate the impact response of tail beam jacks under coal rock collapse loads.
- To understand jack failure mechanisms and inform structural design and prevention strategies.
Main Methods:
- Developed a bidirectional fluid-structure coupling model using Fluent and Mechanical software.
- Analyzed dynamic flow velocity, hydraulic pressure, stress, and strain fields under impact loads.
Main Results:
- Rodless cavity experiences higher stress and strain, indicating greater damage risk.
- Hydraulic pressure exhibits vertical layering, and flow velocity streamlines show spiral patterns.
- Motion state impacts are more sensitive and stronger than stationary impacts.
Conclusions:
- Comprehensive analysis of rodless cavity pressure and rod cavity velocity signals is crucial for identifying coal rock collapse.
- Bidirectional fluid-structure coupling provides insights into jack behavior for intelligent mining technologies.
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