Experimental and numerical study of dissimilar sheet metal clinching
- Resource Type
- Authors
- Szabolcs Jónás; Dávid Felhős; Péter Zoltán Kovács; Miklós Tisza
- Source
- PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019
- Subject
- 010302 applied physics
0209 industrial biotechnology
Materials science
Rotational symmetry
chemistry.chemical_element
02 engineering and technology
01 natural sciences
020901 industrial engineering & automation
chemistry
Aluminium
visual_art
0103 physical sciences
visual_art.visual_art_medium
Aluminium alloy
Composite material
Severe plastic deformation
Sheet metal
Interlock
Joint (geology)
Spot welding
- Language
- ISSN
- 0094-243X
Clinching is a joining technique for similar or dissimilar sheet (metallic or non-metallic) parts that is realized with a mechanical interlock due to local severe plastic deformation. Nowadays it has an ever-growing popularity due to its simplicity and speed. Clinching is suitable to connect dissimilar materials providing a freedom to designers. Lightweight materials such as aluminium can be joined with advanced high strength steels (AHSS) effectively. Costly joints like bolted connections or spot welds can be replaced, with increasing efficiency and reducing production time. Joining dissimilar materials shows a number of challenges (e.g. differences in chemical and mechanical properties, different thicknesses, etc.). This paper deals with the clinch joining of dual phase (DP) steel sheets with aluminium alloy sheets. The aim of the investigation was to determine the strength of the clinched joint. In this article numerical studies were set up to find out the ideal manufacturing process and to identify the main influencers of the joints. 2D axisymmetric FE simulations were performed both in ANSYS and in DEFORM to study the joining process and experimental investigations were performed to show the static strength of the joints. The measured static strength values were compared to determine the better assembly sequence (whether the upper or the lower sheet should be steel). The FE results were compared to each other and to the experimentally clinched sections.