Abstract
The objective of this study is to compare the strength of riveted joints fabricated by traditional riveting (with pre-drilled holes) and self-piercing riveting (SPR) for different types of joints. Riveted joints were produced using steel and aluminum alloy rivets and two types of sheet material: 235JR steel sheet and EN AW 6060 aluminum alloy sheet with the following dimensions: length l = 100 ± 1 mm, width b = 50 ± 1 mm and thickness g = 2 mm. For all tested types of riveted joints (pre-drilled and SPR), 5 sets of joints were fabricated, each set containing 6 samples. The sets of joints differed with respect to the number of rivets (1, 2, 3, 4 and 6 rivets), joint type (single-, three- and four-riveted joints) and lap length. For all tested joints, the highest load capacity was obtained for self-pierced riveted joints, while the lowest - for pre-drilled joints with aluminum alloy rivets. In addition, it was found that the shear strength of self-pierced riveted joints is higher than that of aluminum and steel blind rivets.
Highlights
IntroductionIn assembly joints individual structural components are assembled and can support loads
Joints are an inherent part of human life and activity
Compared to 3-rivet joints, the shear strength of 6-rivet joints is lower by 33% for predrilled riveted joints and by 38% for self-piercing riveting (SPR) joints, which results from a change of the lap surface;
Summary
In assembly joints individual structural components are assembled and can support loads. Depending on whether structural components are joined by a special fastener or not, it is possible to distinguish indirect and direct joints. Rivets or screws can be used as joining elements. No fasteners are used [1,2,3]. Riveting consists in joining shapes with thin sheet metals and brackets. This technique is widely used to join leather and rubber with metal elements, e.g. in saddlery. This type of joints is based on the use of rivets as fasteners. Depending on the rivet shank shape, we can distinguish solid rivets, hollow rivets, tubular rivets, rivet nuts, blind rivets [4]
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