Abstract
The current study is conducted to analyze the influence of thickness configurations on the mechanical properties of the flat-clinching joint. Al1060-H12 sheets with four-type thickness configurations were employed in flat-clinching process. Pull-out and single-lap shear tests were implemented to obtain the static strengths and absorbed energies of the clinching joints. Their main geometrical parameters and failure modes were also discussed and studied. The clinching joint with a thick top sheet achieves smaller undercut and greater neck thickness than the joint using a thick bottom sheet. Compared with the clinching joint using a thick bottom sheet, the joint with a thick top sheet has larger absorbed energy and static strength in single-lap shear tests. In pull-out tests, absorbed energy and static strength of the joint using a thick bottom sheet are larger than the joint with a thick top sheet. Flat-clinching process can reliably join Al1060-H12 sheets with different thickness configurations.
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