Impulse Mitigation via Inclined Sliding Plates
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Solution Overview
Problem
The detonation of buried explosives creates high-velocity soil plumes that can deform and fracture structures by transferring substantial momentum and applying significant pressure, which existing technologies have not adequately mitigated.
Innovation Solution
An impulse mitigation system is implemented, featuring a substrate that communicates with the structure and relocates upon receiving an impulse, utilizing inclined surfaces and shear thinning fluids to reduce friction and momentum transfer, with sliding plates or surfaces designed to absorb and redirect the impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the structure uses a flat surface to stop the soil plume, then the momentum transfer is maximized, but the structure suffers severe deformation and fracture
Solution Approach 1:
The patent employs a sliding plate that can dynamically move along the inclined surface in response to soil plume impact. This dynamic component allows the system to adapt to varying impact forces, enabling the plate to slide and redirect the plume while absorbing excess momentum, thereby protecting the underlying structure from severe deformation and fracture.
Solution Approach 2:
The patent introduces an inclined surface that adds a dimensional element to the impact interaction. By angling the surface rather than using a flat horizontal configuration, the soil plume is redirected along the incline, converting some of the vertical momentum into lateral motion. This dimensional change reduces the direct perpendicular impact force on the structure, thereby reducing deformation and fracture risks.
2Object-affected harmful factors
If the structure increases the distance of soil plume propagation, then the momentum and pressure are reduced, but the structure requires larger space
Solution Approach 1:
The patent employs a thin sliding plate mounted on an inclined surface, creating a flexible, space-efficient mitigation system. This thin-film approach provides effective impulse mitigation without requiring substantial volume, allowing the structure to protect against high-velocity soil plumes while maintaining a compact design that does not significantly increase the overall space requirements.
Solution Approach 2:
The sliding plate acts as an intermediary element between the soil plume and the underlying structure. This intermediate component absorbs and redistributes the impact forces, reducing the direct transmission of momentum and pressure to the main structure. The plate's ability to slide and deform provides a buffer zone that mitigates harmful effects without requiring large distances for plume propagation.
3Object-affected harmful factors
If the structure uses an inclined surface to reduce momentum transfer, then the soil slides along the surface, but friction increases the momentum transfer
Solution Approach 1:
The patent modifies the surface parameters by introducing a low-friction coating or material on the inclined surface. This parameter change reduces the coefficient of friction between the soil plume and the sliding plate, allowing the soil to slide more smoothly. By controlling the friction parameter, the system maximizes the momentum redirection benefit while minimizing the harmful frictional forces that would otherwise increase momentum transfer to the structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system effectively reduces the momentum and pressure transferred to structures by allowing soil to slide along inclined surfaces, thereby minimizing deformation and fracture risks, achieving a 25-30% reduction in impulse, which is a significant improvement over existing solutions.
Implementation Method 1
utilizing inclined surfaces and shear thinning fluids to reduce friction and momentum transfer
Implementation Method 2
utilizing inclined surfaces and shear thinning fluids to reduce friction and momentum transfer
Implementation Method 3
The momentum is a vector quantity with directionality identical to that of the soil velocity. The momentum transferred and pressure applied to the structure can also be reduced by inclining the impacted surface
Data Source
AI summary
An impulse mitigation system configured to mitigate blast impulse directed to a surface (or structure or target). The system includes a substrate in communication with the surface (or structure or target), wherein the substrate is configured to receive an impulse directed to the surface (or structure or target) and then relocate from the surface (or structure or target) in response to received impulse.