Related Experiment Video
Updated: Aug 10, 2025
07:18
Generating Lap Joints Via Friction Stir Spot Welding on DP780 Steel
Published on: August 13, 2019
7.0K
Joining Strategies for Double-Sided Self-Pierce Riveting
Rafael M Afonso1, Luís M Alves1
1IDMEC, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
Materials (Basel, Switzerland)
|February 11, 2023
Summary
Double-sided self-pierce riveting (DSSPR) offers advantages for joining dissimilar materials. Flat-bottom holes in both sheets provide precise positioning and good performance, while pre-riveting offers a viable alternative with lower energy requirements.
Area of Science:
- Materials Science
- Mechanical Engineering
- Manufacturing Processes
Background:
- Double-sided self-pierce riveting (DSSPR) is an advanced joining technique offering advantages over traditional self-pierce riveting (SPR).
- DSSPR is suitable for joining materials with varying thicknesses and cross-sections, crucial for complex industrial applications.
Purpose of the Study:
- To compare different DSSPR strategies for producing mechanical joints.
- To evaluate the performance and feasibility of various DSSPR methods for industrial adoption.
Main Methods:
- Investigated DSSPR using flat-bottom holes in one or both sheets.
- Analyzed DSSPR with pre-riveting techniques, with and without flat-bottom holes.
- Conducted lap shear tests to assess destructive performance and joining integrity.
Main Results:
- Flat-bottom holes in both sheets ensure precise rivet positioning, tightening process tolerances and maintaining high destructive performance.
- Pre-riveting strategies yield suitable results, offering a balance between performance and reduced force/energy requirements.
- Both strategies demonstrate feasibility for industrial application, with distinct advantages based on specific needs.
Conclusions:
- The choice of DSSPR strategy depends on application-specific requirements for precision, performance, and resource utilization.
- Flat-bottom holes offer superior precision and performance, whereas pre-riveting provides a more energy-efficient option.
- This research provides essential guidance for selecting optimal DSSPR joining strategies in manufacturing.
Related Concept Videos
01:17Steel Fastening Techniques
200
Steel sections can be joined together through various fastening techniques including riveting, bolting, and welding, each suitable for different structural requirements and conditions.
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
Bolting is another...
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
Bolting is another...
200
01:16Self-Locking Screw
1.7K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
1.7K
01:18Wood Fasteners
125
In wood construction, fasteners are essential for securing components together, with the connection strength largely dependent on the direct bearing between members. Various types of fasteners are employed, each suited to specific applications and structural requirements.
Nails are the most common fasteners, consisting of sharp-pointed metal pins that are driven into wood using a hammer or a mechanical nail gun. They come in a variety of diameters, heads, and lengths. Nailing techniques include...
Nails are the most common fasteners, consisting of sharp-pointed metal pins that are driven into wood using a hammer or a mechanical nail gun. They come in a variety of diameters, heads, and lengths. Nailing techniques include...
125
01:15Thin-Walled Hollow Shafts
223
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
223
01:24Wedges
1.2K
A wedge is a simple machine that serves various purposes, such as adjusting the elevation of structural or mechanical parts, providing stability for heavy objects, and splitting a body into two parts. This versatile tool can amplify an applied force, making it easier to manipulate large or heavy objects.
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
1.2K
01:03Structural Joints: Fibrous Joints
2.1K
Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
2.1K