Vehicle Front Skeleton Reinforcement for Small Overlap Collision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle front part skeleton structures do not maximize energy absorption during small overlap collisions, leading to incomplete deceleration of the vehicle as the bumper reinforcement collapses without fully engaging the crash box and side members.
Innovation Solution
A skeleton structure comprising a pair of side skeleton members, a bumper reinforcement with a hollow closed cross-section, and a reinforcement member with higher rigidity, where the reinforcement member is housed within the bumper reinforcement to suppress collapse deformation and hook the barrier, thereby enhancing energy absorption and preventing vehicle passage through the barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the bumper reinforcement is designed to collapse-deform during collision, then collision energy is absorbed, but the vehicle may pass through the barrier without maximum deceleration
Solution Approach 1:
The bumper reinforcement is divided into multiple regions with different deformation characteristics: a first region that collapse-deforms to absorb energy, and a second region with increased rigidity that prevents excessive deformation and ensures proper energy transfer to the crash box and side members, resolving the contradiction between energy absorption and deceleration effectiveness
Solution Approach 2:
Different portions of the bumper reinforcement are given different mechanical properties - the first region has lower rigidity for collapse deformation while the second region has higher rigidity to maintain structural integrity and prevent vehicle passage through the barrier, achieving both energy absorption and reliable deceleration
2Loss of energy
If the bumper reinforcement collapses completely, then more energy is absorbed, but the crash box and side members are not fully engaged
Solution Approach 1:
The bumper reinforcement is pre-designed with a controlled collapse pattern where the first region is intended to deform first, which preliminarily absorbs energy while simultaneously preparing the load path for subsequent engagement of the crash box and side members through the second region, ensuring proper structural coordination
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 proposed structure effectively absorbs collision energy by suppressing collapse deformation of the bumper reinforcement and engaging the crash box, resulting in improved deceleration and reduced vehicle passage through the barrier during small overlap collisions.
Implementation Method 1
The reinforcement member has a higher rigidity than the bumper reinforcement, and is housed in an end, in the width direction of the vehicle, of the bumper reinforcement
Implementation Method 2
the bumper R/F 100...absorbs energy of the collision by collapse-deforming from the front side during the front collision
Data Source
AI summary
A skeleton structure of a front part of a vehicle has a reinforcement member that has a higher rigidity than a bumper reinforcement and that is housed in an end, in a width direction of the vehicle, of the bumper reinforcement. With this structure, passing-through of the vehicle from a barrier during a small overlap collision is suppressed, and an amount of absorption of collision energy by the skeleton member can be increased.