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Research and Development of High-performance Explosives

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Published on: February 20, 2016

Anti-explosion performance analysis of marine interdiction system based on ALE method.

Zeping Liu¹, Hong Li¹, Li Li²

¹College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China.

|March 27, 2023

Summary

Marine interdiction systems protect ports from explosions. Simulations show safe distances for 500kg (4.62m) and 1500kg (6.37kg) TNT blasts, confirming system safety under near-water explosion conditions.

Keywords:

ALE method Fluid-solid interaction Marine interdiction system Near-water explosion Proportional burst distance Shock wave overpressure

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Area of Science:

Naval Engineering
Explosion Dynamics
Computational Fluid Dynamics

Background:

Marine interdiction systems are crucial for port security, preventing collisions and explosions.
Assessing anti-explosion performance is vital for system optimization and safety.

Purpose of the Study:

To simulate near-water explosions impacting marine interdiction systems.
To evaluate the system's dynamic response and anti-explosion capabilities.
To validate the proportional burst distance as a damage criterion.

Main Methods:

Utilized the Arbitrary Lagrangian Euler (ALE) method in ANSYS LS/DYNA for blast simulation.
Extracted and fitted shock wave overpressure data.
Analyzed the dynamic reaction of the interdiction system under various conditions.

Main Results:

Simulated shock wave overpressure closely matched empirical formulas.
Determined safe distances: 4.62m for 500kg TNT and 6.37m for 1500kg TNT.
At a proportional burst distance of 0.5, some components reached breaking tension, but the system remained safe.

Conclusions:

The proportional burst distance is a valid criterion for near-water explosion damage assessment.
The marine interdiction system demonstrates robust anti-explosion performance.
Findings support the optimization and development of marine interdiction systems.