Vehicle Front Structure Load Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle body front structures face issues with load concentration and local deformation during collisions, as they tend to concentrate loads on the bumper reinforcement, leading to potential deformation and increased injury risk.
Innovation Solution
A vehicle body front structure design featuring a front side member, a strut tower, a fender apron, a reinforcement member with a flat plate portion, and a second member connecting the reinforcement member to the fender apron, which disperses impact loads and maintains the reinforcement member's attitude, preventing local deformation by distributing the load over a wider surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reinforcement members are disposed between the bumper reinforcement and side rails to prevent breakage, then the bumper reinforcement can be prevented from breaking inward during offset collision, but load concentration occurs on the upper and lower portions of the bumper reinforcement causing local deformation of the collision body
Solution Approach 1:
The bumper reinforcement is designed with a curved configuration in the vehicle width direction, transitioning from a straight line to a curved path. This dimensional change allows the reinforcement to span across a wider area, distributing loads more evenly across the collision body rather than concentrating them at specific upper and lower portions, thereby preventing local deformation while maintaining breakage prevention capabilities
Solution Approach 2:
The bumper reinforcement is divided into multiple portions along its length, with each portion capable of independently deforming and absorbing energy. This segmentation allows different sections to handle loads differently, preventing stress concentration at any single location while maintaining overall structural integrity and preventing breakage
Data Source
AI summary
Provided is a vehicle body front structure capable of suppressing load concentration in a collision body and preventing local deformation of the collision body. A vehicle body front structure according to one embodiment of the present invention is a vehicle body front structure including a front side member extending in the longitudinal direction on the side of a power unit mounting room located at the front of a vehicle, the vehicle body front structure further including: a strut tower that is disposed on the outer side in the vehicle width direction of the front side member, and to which a suspension is fixed; a fender apron disposed on the front side of the strut tower and on the outer side in the vehicle width direction of the front side member; a first member fixed to the front end of the front side member and extending in the vertical direction; a reinforcement member fixed to the outer side in the vehicle width direction of the lower end of the first member, the reinforcement member having a flat plate portion facing the front of the vehicle over a predetermined length in the vertical direction; and a second member connecting the reinforcement member and the fender apron.