Vehicle Hood Reinforcement Member Design
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Solution Overview
Problem
Existing vehicle hood structures lack effective reinforcement to prevent buckling, bending, and vibration, while also failing to provide adequate pedestrian safety and impact deceleration in the event of collisions.
Innovation Solution
A vehicle hood structure featuring a reinforcement member with a baseplate and tab, secured between the upper and lower panels, which includes a mastic patch for damping and a tab that extends to support the upper panel and decelerate it in impacts, thereby reducing vibrations and preventing hard contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing vehicle hood structures are used, then the hood can be manufactured and assembled, but the hood lacks structural integrity and is prone to buckling, bending, and vibration
Solution Approach 1:
The reinforcement member is divided into distinct functional segments: a baseplate portion that attaches to the lower panel and a tab portion that attaches to the upper panel. This segmentation allows each portion to be optimized for its specific function while maintaining overall structural integrity without excessive complexity
Solution Approach 2:
The reinforcement member combines different material properties and structural forms (baseplate and tab) to create a composite reinforcement system that provides both structural support and vibration damping capabilities, enhancing overall hood strength without simple material repetition
2Object-affected harmful factors
If existing vehicle hood structures are used, then the hood can operate, but it generates excessive vibration and noise from external forces
Solution Approach 1:
The reinforcement member is pre-installed between the upper and lower panels to provide vibration damping and noise reduction before external forces act on the hood. This prior cushioning prevents excessive vibration and noise generation during operation while maintaining structural rigidity
3Object-affected harmful factors
If existing vehicle hood structures are used, then the hood can be produced, but it lacks pedestrian safety features and impact deceleration capability
Solution Approach 1:
The reinforcement member acts as an intermediary element between the upper and lower panels, providing a structure that decelerates the upper panel during pedestrian impacts. This intermediary structure absorbs impact energy and reduces harmful effects to pedestrians while maintaining manufacturing simplicity through integrated baseplate and tab design
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 enhances structural integrity, reduces vibrations, and improves pedestrian safety by preventing buckling and bending, while ensuring smooth operation and reduced noise from external forces.
Implementation Method 1
which includes a mastic patch for damping
Data Source
AI summary
A vehicle includes a hood that is rotatably secured to a vehicle body. The hood has an upper panel, a lower panel, and a reinforcement member disposed therebetween. The reinforcement member has a baseplate and a tab. The baseplate is secured to an internal surface of the lower panel. The tab has a proximal end that is secured to the baseplate and a distal end that extends away from the baseplate and is secured to an internal surface of the upper panel.