Armored Door Deformable Buffer Impact Energy
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Solution Overview
Problem
Armored doors in passenger compartments are vulnerable to deformation and destruction from improvised explosive devices, leading to potential projection of door parts into the compartment due to the discontinuity in protection and the failure of hinges and fixing devices.
Innovation Solution
Incorporation of deformable intermediate means, such as metal foam blocks, between the armor plate and the compartment wall to absorb energy and prevent direct impact, creating a free space for deformation without damaging the structural components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an armored door is installed in an armored wall, then the protection of the passenger compartment is improved, but the door structure becomes vulnerable to deformation and destruction under explosive impact
Solution Approach 1:
A deformable intermediate element is introduced between the armor plate and the door structure to act as a mediator. This element absorbs impact energy through deformation, preventing direct transmission of explosive forces to the door structure, hinges, and locks, thereby resolving the contradiction between maintaining protection continuity and withstanding explosive impacts.
Solution Approach 2:
The deformable intermediate element is pre-installed between the armor plate and door structure to provide cushioning before impact occurs. This prior cushioning arrangement allows the system to absorb explosive energy through controlled deformation of the intermediate element, protecting the door structure from destruction while maintaining overall protection integrity.
2Strength
If rigid armor plate is fixed directly to door structure, then structural strength is improved, but the door becomes vulnerable to hinge and lock destruction under impact
Solution Approach 1:
The deformable intermediate element serves as an intermediary between the rigid armor plate and door structure. It decouples the rigid connection, allowing the armor plate to maintain structural strength while the intermediate element absorbs impact forces, thereby protecting hinges and locks from destruction during explosive events.
3Object-affected harmful factors
If armor plate is securely fixed to door structure, then protection capability is improved, but door parts may be projected into compartment during explosion
Solution Approach 1:
The deformable intermediate element acts as a buffer between the armor plate and door structure. During explosion, it absorbs energy through deformation, preventing the armor plate from being violently displaced and projected into the passenger compartment, while maintaining the protection capability against intrusion under normal conditions.
Solution Approach 2:
The intermediate element converts the harmful explosive energy into beneficial controlled deformation. By allowing the intermediate element to deform under impact, the system transforms the destructive force of explosion into a controlled energy absorption mechanism, preventing door part projection while maintaining protection integrity.
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
Enhances the resistance of the door structure, reducing the risk of interior projection and maintaining protection continuity by absorbing impact energy through deformation of the intermediate means, thus preventing destruction of hinges and locks.
Implementation Method 1
deformable intermediate means, such as metal foam blocks, between the armor plate and the compartment wall to absorb energy and prevent direct impact
Implementation Method 2
absorb energy and prevent direct impact, creating a free space for deformation without damaging the structural components
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to an armored door (5) for a passenger compartment, the door intended for closing up an opening (10) of the passenger compartment and comprising a structure (7) outside of which at least one armored plate (12) is attached. Said door is characterized in that the armored plate (12) is attached remotely from the structure and separated from the latter by first intermediate deformable means (14) capable of absorbing part of the energy of an impact, the armored plate (12) further being greater in size than the structure (7), and by second intermediate deformable means (15) interposed between the edge (R) of the armored plate (12) and a wall (8) of the passenger compartment surrounding the opening (10).