Influence of lower sheet material strength on joint quality in self-piercing riveting

  • Hoang Nguyen School of Mechanical Engineering, Hanoi University of Science and Technology
  • Duy Thong Tran School of Mechanical Engineering, Hanoi University of Science and Technology
  • Quang Anh Pham School of Mechanical Engineering, Hanoi University of Science and Technology
  • Dinh Van Tran School of Mechanical Engineering, Hanoi University of Science and Technology
  • Quoc Tuan Pham School of Mechanical Engineering, Hanoi University of Science and Technology
  • Van Duy Dinh School of Mechanical Engineering, Hanoi University of Science and Technology
  • Dac Trung Nguyen School of Mechanical Engineering, Hanoi University of Science and Technology
Keywords: Self-piercing riveting; Finite element analysis; Joining capability; Sheet metals; Virtual material.

Abstract

Self-piercing riveting (SPR) has become a key joining technique for lightweight and high-strength joints, especially in the automotive and aerospace industries. This study investigates how the strength of the lower sheet affects the performance of SPR joints. While the upper sheet remains unchanged, the lower sheet varies using various alloys (AA7075-F, AA2019, BA0270, Mat A, and Mat B). A finite element model developed in Abaqus/Explicit was employed to simulate the SPR process and assess joint performance. Key joint evaluation criteria, such as interlock and remaining thickness, are also discussed. The results indicate that the strength of the lower sheet must reach a certain threshold to ensure proper joint formation. While increasing the lower sheet’s strength can enhance joint quality, excessive material strength may yield an insufficient interlock within the material or even generate a failure of the lower sheet.

điểm /   đánh giá
Published
2026-02-25
Issue
Vol. 109 (2026)
Section
Mechanics & Mechanical Engineering