Crimping Piece With Release Bead For Composite Support
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Solution Overview
Problem
Existing crimping technologies generate radial stresses on supports, particularly composite materials, which can lead to deformation, delamination, or cracking due to these stresses, and existing solutions do not effectively mitigate these issues.
Innovation Solution
A crimping part design featuring a crimping section that deforms into a crimping bead to secure the part on the support and a release bead to limit radial stresses, comprising a first hollow section adjacent to the support head and a second section that deforms outside into a crimping bead, with a specific geometry to control deformation and reduce radial forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional crimping part is used to secure the part on the support, then the part is firmly attached to the support, but radial stresses are generated on the support causing deformation, delamination or cracking
Solution Approach 1:
The crimping section is divided into two distinct sections: a inner section that deforms inside the hollow to create a release bead, and an outer section that deforms outside to create a crimping bead. This segmentation allows the inner section to absorb deformation energy and prevent radial stress transmission to the support, while the outer section maintains secure attachment.
Solution Approach 2:
The inner section acts as an intermediary element between the crimping force and the support. It deforms first to create a release bead that absorbs radial stresses, thereby protecting the support from damage while still enabling secure attachment through the outer section's crimping bead.
2Ease of manufacture
If the wall thickness is reduced to facilitate deformation, then the crimping operation becomes easier, but the radial stresses on the support increase
Solution Approach 1:
The hollow structure is segmented into an inner section and an outer section with different functional requirements. The inner section is designed to deform first and absorb stress, while the outer section maintains sufficient thickness to control deformation and minimize radial stress transmission to the support.
Solution Approach 2:
The wall thickness parameters are optimized differently for the inner and outer sections. The inner section has reduced thickness to facilitate easy deformation and release bead formation, while the outer section maintains appropriate thickness to control crimping behavior and reduce radial stresses on the support.
3Ease of manufacture
If a simple cylindrical barrel is used, then the manufacturing is simpler, but the deformation control during crimping is insufficient
Solution Approach 1:
The barrel is segmented into distinct functional zones: a support head for bearing, an inner hollow section for release bead formation, and an outer section for crimping bead formation. This segmentation provides clear deformation control while maintaining manufacturing simplicity through a one-piece construction.
Solution Approach 2:
Different sections of the barrel have different geometric properties optimized for their specific functions. The inner section has geometry optimized for internal deformation and release bead creation, while the outer section has geometry optimized for external crimping and secure attachment, achieving precise deformation control throughout the structure.
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 design effectively limits radial stresses on the support during crimping, making it suitable for composite and fragile materials by ensuring that only axial stresses are applied, thus preventing untimely deformation and stress-related damage.
Implementation Method 1
a crimping section (9) adjacent to said support head (4) and intended to be deformed during a crimping operation of the part (1) on the support (2)
Implementation Method 2
the first section (11) is configured to deform inside the hollow (13) of the barrel (5) into a release bead (14) to limit the forces on the support (2) during the part (1) crimping operation
Data Source
Figure 1
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AI summary
A part to be crimped onto a support, comprising a support head (4) and a barrel (5) having a crimping section (9) intended to be deformed during a crimping operation of the part, the crimping section (9) comprising a first hollow section (11) adjacent to the support head (4) and a second section (12) adjacent to the first section (11), the second section (12) being configured to deform outside the part into a crimping bead to crimp the part onto the support, and the first section (11) is configured to deform inside the hollow (13) of the barrel (5) into a clearance bead to limit the forces on the support during the crimping operation of the part.