Elastomer Particle Bullet Trap for Dust and Ricochet Mitigation
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Solution Overview
Problem
Bullet traps filled with sand suffer from dust generation, lead contamination, formation of bullet nests leading to ricochets, high maintenance costs, and limited service life due to the abrasive nature of sand and lead deposition, as well as safety concerns with elastomer particles of small diameters posing a fire risk.
Innovation Solution
A bullet trap using energy-absorbing particles with diameters greater than 0 μm and less than 6 mm, specifically self-extinguishing elastomers like ethylene acrylate rubber with additives, which reduces dust, prevents deformation of projectiles, minimizes lead release, and eliminates bullet nests, ensuring safety and efficient energy absorption with high bulk density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If sand is used as energy-absorbing material, then kinetic energy can be absorbed, but dust is generated and lead is deposited causing wear and health hazards
Solution Approach 1:
The invention changes the material parameter from sand to elastomer particles, fundamentally altering the interaction mechanism between projectile and energy-absorbing material. This parameter change eliminates dust generation and lead deposition while maintaining kinetic energy absorption capability.
Solution Approach 2:
The invention uses composite elastomer particles that combine rubber base material with specific additives (such as carbon black, silica, or other fillers) to achieve optimal energy absorption, dust prevention, and lead containment properties.
2Loss of energy
If sand is used as energy-absorbing material, then kinetic energy can be absorbed, but bullet nests form leading to ricochets
Solution Approach 1:
The invention changes the material parameter from sand to elastomer particles, fundamentally altering the interaction mechanism between projectile and energy-absorbing material. This parameter change eliminates dust generation and lead deposition while maintaining kinetic energy absorption capability.
Solution Approach 2:
The invention uses composite elastomer particles that combine rubber base material with specific additives (such as carbon black, silica, or other fillers) to achieve optimal energy absorption, dust prevention, and lead containment properties.
3Loss of energy
If small diameter elastomer particles (0-300 μm) are used, then energy absorption is improved, but fire risk increases
Solution Approach 1:
The invention changes the particle diameter parameter from small (0-300 μm) to larger (300 μm to 6 mm), which reduces fire risk while maintaining effective energy absorption. The size parameter optimization balances safety and performance.
Solution Approach 2:
The invention uses composite elastomer particles that combine rubber base material with specific additives (such as carbon black, silica, or other fillers) to achieve optimal energy absorption, dust prevention, and lead containment properties.
4Loss of energy
If sand is used as energy-absorbing material, then kinetic energy can be absorbed, but high maintenance work and frequent sand replacement are required
Solution Approach 1:
The invention changes the material parameter from sand to elastomer particles, fundamentally altering the interaction mechanism between projectile and energy-absorbing material. This parameter change eliminates dust generation and lead deposition while maintaining kinetic energy absorption capability.
Solution Approach 2:
The invention uses composite elastomer particles that combine rubber base material with specific additives (such as carbon black, silica, or other fillers) to achieve optimal energy absorption, dust prevention, and lead containment properties.
5Loss of energy
If sand is used as energy-absorbing material, then kinetic energy can be absorbed, but the bullet trap container must be very long
Solution Approach 1:
The invention changes the material parameter from sand to elastomer particles, fundamentally altering the interaction mechanism between projectile and energy-absorbing material. This parameter change eliminates dust generation and lead deposition while maintaining kinetic energy absorption capability.
Solution Approach 2:
The invention uses composite elastomer particles that combine rubber base material with specific additives (such as carbon black, silica, or other fillers) to achieve optimal energy absorption, dust prevention, and lead containment properties.
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
The solution provides a safer, low-maintenance bullet trap with reduced noise pollution, extended service life, and cost-effective production by using self-extinguishing elastomers that absorb kinetic energy effectively without forming nests or causing ricochets, allowing for a smaller design while maintaining high energy absorption capacity.
Implementation Method 1
They are used to safely dissipate the kinetic energy of the impacting projectiles
Implementation Method 2
When catching the projectiles, grains of sand are crushed by the projectile
Implementation Method 3
absorb the kinetic energy of the projectiles in the energy-absorbing material is significantly reduced compared to sand
Implementation Method 4
Due to the elastic properties of the energy-absorbing material, the noise pollution when absorbing the kinetic energy of the projectiles in the energy-absorbing material is significantly reduced compared to sand
Implementation Method 5
the noise pollution when absorbing the kinetic energy of the projectiles in the energy-absorbing material is significantly reduced compared to sand
Implementation Method 6
the energy absorbing material is self-extinguishing. The term elastomer here refers to the elastomer mentioned in combination with the respective additive
Implementation Method 7
tests have shown that elastomer particles can pose an increased risk of fire
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a bullet trap comprising a container (2) with an entry end (10) and an energy-absorbing material (3). The container (2) is filled with the energy-absorbing material (3), which is an elastomer. The energy-absorbing material (3) consists of particles (13). The diameters (d1) of the particles (13) are greater than 0 µm and less than 6 mm.The energy-absorbing material (3) is ethylene acrylate rubber with acrylate as an additive, ethylene propylene rubber with melamines and/or salts as additives, butyl rubber with chlorine as an additive, chlorobutyl rubber with chlorine or bromobythol as an additive, bromobutyl rubber with chlorine or bromobythol as an additive, chlorosulfonated polyethylene rubber with chlorine as an additive, polyurethane rubber with salts as an additive, polyacrylate rubber with salts as an additive, fluororubber with fluorides as an additive, fluorosilicone rubber with fluorides as an additive, or chloroprene rubber with chlorine as an additive.