Structural Part Web With Through-Window Energy Dissipation
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Solution Overview
Problem
Current local energy-dissipation systems in structural parts, especially those with open sections and flat surfaces, face challenges in controlling degradation and maximizing energy dissipation during crashes, with complex designs and limited energy-dissipation capacity.
Innovation Solution
A structural part with a web featuring a through-window divided into two portions, equipped with an energy-dissipation device containing cutting means and alignment mechanisms, allowing controlled degradation by cutting the web into strips under compressive force, thereby enhancing energy dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If additional energy-dissipation systems are assembled onto structural parts, then energy dissipation capacity is improved, but device complexity increases
Solution Approach 1:
The patent merges the energy-dissipation function directly into the structural part by integrating cutting means and clearing means onto the web itself. The cutting means are formed as protrusions on the web, and the clearing means are formed as recesses, eliminating the need for separate additional systems and reducing overall device complexity while maintaining energy dissipation capacity.
Solution Approach 2:
The web of the structural part serves multiple functions: it provides structural support and simultaneously incorporates energy-dissipation capabilities through integrated cutting and clearing mechanisms. This multi-functionality eliminates the need for separate dedicated energy-dissipation components, simplifying the overall design.
2Loss of energy
If additional energy-dissipation systems are assembled onto structural parts, then energy dissipation capacity is improved, but the system dimensions are limited
Solution Approach 1:
By integrating the energy-dissipation mechanisms directly into the web structure, the patent eliminates the need for separate additional systems that would increase overall dimensions. The cutting means and clearing means are formed as integral features of the web itself, maximizing energy dissipation within the existing structural footprint.
3Ease of manufacture
If structural parts with open sections and flat surfaces are used, then manufacturing ease is improved, but stability deteriorates
Solution Approach 1:
The patent incorporates cutting means and clearing means into the web structure before the crash event occurs. These pre-integrated features ensure that when compression is applied, the web will undergo controlled degradation along predetermined paths, enhancing stability and predictability during the crash event while maintaining manufacturing simplicity.
4Loss of energy
If controlled degradation is implemented to maximize energy dissipation, then energy dissipation capacity is improved, but device complexity increases
Solution Approach 1:
The cutting means and clearing means are integrated directly onto the web structure, eliminating the need for separate control mechanisms. The controlled degradation is achieved through the geometric configuration of the web itself, which guides the failure path without requiring additional active control systems.
Solution Approach 2:
The web structure is designed to automatically guide its own degradation path through the integrated cutting and clearing features. When compressed, the web naturally follows the predetermined failure paths defined by its geometry, eliminating the need for external control mechanisms and reducing system 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 solution enables controlled and significant energy dissipation, suitable for various structural parts, including those with open sections and flat surfaces, with a simple design and high energy-dissipation capacity, ensuring effective energy absorption during impacts.
Implementation Method 1
a device, referred to as an energy-dissipation device, comprising cutting means arranged within the window and able to cut at least one of the portions of the web into strips as a result of a compressive force exerted on the part along the Z axis
Implementation Method 2
capable of dissipating energy delivered during an impact compressing it along an axis Z
Data Source
AI summary
A structural part dissipates energy delivered during an impact that compresses the part along an axis Z, including a web having two opposite surfaces. The part includes: a through-window extending between the opposite surfaces of the web, dividing the web into a first portion and a second portion respectively, arranged in series along the Z axis; and an energy-dissipation device, including a cutting element arranged within the window and able to cut at least one of the portions of the web into strips as a result of a compressive force exerted on the part along the Z axis, and an element for clearing away the strips thus formed.