Vehicle Skeleton Reinforcement Welding Deformation Control
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Solution Overview
Problem
Existing vehicle body skeleton structures face challenges in easily setting different deformation modes and achieving high versatility, particularly due to complex welding processes and limited adjustability of reinforcement steel plates after press forming.
Innovation Solution
A vehicle body skeleton structure where a skeleton member is bent into a predetermined shape and a reinforcement member is welded along multiple weld lines to the skeleton member, allowing for different deformation modes by controlling the placement and direction of weld lines, eliminating the need for intricate combinations of reinforcement plates and simplifying the press forming process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcement steel plate is joined to an outer panel of a center pillar with different cross-sectional shapes, then deformation modes can be controlled to protect occupants and absorb impact energy, but the welding work becomes complex and difficult to perform smoothly
Solution Approach 1:
The invention changes the geometric parameters of the reinforcement member by providing protrusions that extend in the vehicle width direction. This allows the reinforcement member to be joined to the outer panel while maintaining different cross-sectional shapes, enabling deformation mode control for occupant protection without complicating the welding process.
2Reliability
If multiple reinforcement steel plates are intricately combined to achieve different deformation modes, then deformation characteristics can be controlled, but the number of setup processes increases and versatility decreases
Solution Approach 1:
The invention segments the reinforcement function by providing protrusions on a single reinforcement member that extend in the vehicle width direction. This segmentation allows different regions of the same member to control different deformation modes, eliminating the need for multiple intricately combined reinforcement plates and reducing setup processes.
Solution Approach 2:
The reinforcement member with protrusions serves multiple functions simultaneously: it reinforces the outer panel, controls deformation modes in different regions, and absorbs impact energy. This multi-functionality eliminates the need for multiple separate reinforcement plates, reducing device complexity and increasing versatility.
3Reliability
If the cross-sectional shape of the reinforcement steel plate differs from the outer panel, then deformation modes can be controlled, but it becomes difficult to bring the welding gun to the portion to be welded
Solution Approach 1:
The invention changes the geometric parameters by providing protrusions on the reinforcement member that extend in the vehicle width direction. This configuration allows the reinforcement member to maintain a simpler cross-sectional shape that matches the outer panel, improving welding gun accessibility while still enabling deformation mode control through the protrusion geometry.
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
This approach enables easy setting of deformation modes, increases versatility, and optimizes impact energy absorption and occupant protection by allowing adjustable deformation characteristics without the need for intricate reinforcement plate arrangements, simplifying the forming process and die design.
Implementation Method 1
a reinforcement member welded to the skeleton member along a plurality of weld lines to be joined to a surface of the skeleton member
Implementation Method 2
a skeleton member bent to have a predetermined shape; Upon application of external force from the side, the lower vertical wall is so deformed and crushed as to be inclined toward a vehicle interior to absorb impact energy
Implementation Method 3
the lower vertical wall is so deformed and crushed as to be inclined toward a vehicle interior to absorb impact energy
Data Source
AI summary
A vehicle body skeleton structure includes: a skeleton member bent to have a predetermined shape; and at least one reinforcement member welded to the skeleton member along a plurality of weld lines to be joined to a surface of the skeleton member, and bent along the surface.