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Thin-Walled Cylindrical Shell Storage Tank under Blast Impacts: Finite Element Analysis.
Ahmad Mahamad Al-Yacouby1, Lo Jia Hao1, M S Liew1
1Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia.
Materials (Basel, Switzerland)
|November 27, 2021
Summary
This study numerically simulated thin-walled cylindrical storage tanks under blast loads. Results show blast intensity, wall thickness, and internal fill level significantly impact structural behavior, crucial for safety design.
Area of Science:
- Structural Engineering
- Mechanical Engineering
- Risk Assessment
Background:
- Thin-walled cylindrical shell storage tanks are critical pressure vessels in industries like oil and petrochemicals.
- These structures are susceptible to catastrophic failure from fire and explosion events.
- Understanding their response to blast loads is essential for enhancing safety and preventing accidents.
Purpose of the Study:
- To conduct a parametric study on the structural behavior of large-scale cylindrical storage tanks subjected to blast loads.
- To investigate the influence of key parameters including internal liquid level, wall thickness, material yield strength, constraint conditions, and blast intensity.
- To compare numerical simulation results with analytical predictions for validation.
Main Methods:
- Utilized the finite element analysis (FEA) method for numerical simulations.
- Employed LS-DYNA software for conducting blast simulations.
- Varied tank wall thickness (10-40 mm) and internal fluid fill levels (25-100%) for parametric analysis.
- Investigated tanks with a diameter of 100 m and height of 22.5 m under various blast conditions.
Main Results:
- The study analyzed the effects of blast intensity, standoff distance, wall thickness, and internal fluid fill level on tank structural response.
- Numerical results were systematically compared against analytical solutions to ensure accuracy.
- Key findings highlight the significant impact of these parameters on the overall structural integrity and deformation patterns of the tanks.
Conclusions:
- The finite element analysis provides valuable insights into the blast response of thin-walled cylindrical storage tanks.
- Optimizing wall thickness and managing internal fill levels are critical strategies for mitigating blast-induced damage.
- The findings support improved design guidelines and safety protocols for industrial storage facilities facing explosion risks.
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