Motor Vehicle Front End Column With Reinforcing Ribs
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Solution Overview
Problem
Current motor vehicle front end structures lack effective energy absorption during front impacts, leading to inadequate deformation and potential damage.
Innovation Solution
The structure incorporates columns with parallel and inclined reinforcing ribs, a metal or composite reinforcing insert, and a hollow portion filled with absorbent material to enhance axial deformation and energy absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the front end structure is made rigid to maintain structural integrity, then strength is improved, but energy absorption during collision deteriorates
Solution Approach 1:
The column is segmented into multiple functional zones: an upper rigid portion for structural integrity, a middle deformation zone with reinforcing ribs for controlled deformation and energy absorption, and a lower portion for connection. This segmentation allows different parts to serve different functions during collision.
Solution Approach 2:
The reinforcing ribs change the deformation parameters of the column by providing controlled deformation paths. The ribs are designed with specific geometry and distribution to control how the column deforms under compression, enabling predictable energy absorption while maintaining overall structural strength.
2Loss of energy
If the column deforms during collision to absorb energy, then energy absorption is improved, but structural stability deteriorates
Solution Approach 1:
The reinforcing ribs are pre-configured in specific patterns and orientations before collision occurs. This preliminary structural arrangement ensures that when deformation is initiated, it follows predetermined paths that maintain structural stability while absorbing energy, preventing uncontrolled collapse.
Solution Approach 2:
The column combines different material properties and structural configurations - the rigid upper portion, the deformation zone with reinforcing ribs, and potential hollow sections - creating a composite structure that simultaneously achieves energy absorption and structural stability.
3Loss of energy
If reinforcing ribs are added to the column to improve deformation control, then energy absorption is improved, but device complexity increases
Solution Approach 1:
Reinforcing ribs are added only in specific locations where they are most effective for energy absorption, rather than uniformly throughout the entire column. The ribs are concentrated in the deformation zone, leaving other areas simpler in design, thus balancing energy absorption performance with manufacturing complexity.
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 improved structure achieves increased deformation force and energy absorption during collisions, providing better protection by stabilizing deformation forces over a greater displacement range.
Implementation Method 1
the structure according to the present invention is configured so that at least one of the columns deforms axially in a compression mode of the structure (longitudinal axis of the vehicle), which provides improved energy absorption in the event of a collision suffered by the motor vehicle
Implementation Method 2
the structure comprises an absorbent material in the hollow portion
Data Source
AI summary
The invention concerns a structure for a motor vehicle front end, comprising a crossmember and at least one column (4) rigidly connected to the crossmember, the crossmember extending longitudinally in a so-called main direction, characterised in that said at least one column (4) comprises a first set (10) of reinforcing ribs (11) on at least a portion (12) of an outer surface of said at least one column (4), each reinforcing rib (11) extending in a direction (D) parallel to the main direction of the crossmember.