Mechanics & Industry
Volume 24, 2023
|Number of page(s)||12|
|Published online||05 April 2023|
Simulation of dieless clinching process considering the limit of blank holder
College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
2 College of Mechatronics Engineering, Binzhou University, Binzhou 256600, China
* e-mail: email@example.com
Accepted: 22 February 2023
The low strength and large protrusion of the traditional dieless clinched joint hindered its application. To improve the mechanical properties of the dieless clinched joint, a novel dieless clinching process considering the limitation of the blank holder was proposed. The finite element model of the dieless clinching process was established by DEFORM-2D, the influences of the blank holder spring stiffness, the blank holder limit height, and the punch diameter on the mechanical interlock of the joint were analyzed, and the influence laws of blank holder spring stiffness and blank holder limit height on material flow and mechanical interlock were obtained. Then, the influence of these three die parameters and their interaction on the joint interlock were analyzed using the response surface method. The results show that the blank holder displacement plays a key role in the formation of mechanical interlock in the dieless clinching process. Reasonable limit height and spring stiffness of the blank holder can control the flow direction of materials, so as to improve the mechanical interlock and the strength of dieless clinched joints. It provides a new idea for improving the dieless clinching process.
Key words: Dieless clinching / DEFORM-2D / mechanical interlock / blank holder limitation / response surface method
© Z. Wang et al., Published by EDP Sciences 2023
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