Mechanical clinching process using preforming of lower sheet for improvement of joinability

Abe, Yohei; Ishihata, Shinnosuke; Maeda, Takato; Mori, Ken-ichiro

doi:10.1016/j.promfg.2018.07.347

Cited by 19 publications

(11 citation statements)

References 12 publications

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“…Y. Abe et al [20] presented research on clinching possibility of ultra-high strength steels. These steels have low ductility which results in high thinning of the upper sheet (necking).…”

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

“…Sheet necking results in fracture or reduced loading capability for this type of joint. In this work [20], the preforming operation is utilized to shape lower sheet first, then upper sheet is placed over, and the joint is made by clinching tool. It was stated [20] that today most automotive panels are made from high strength steel, and they are connected by means of spot welding.…”

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

“…In this work [20], the preforming operation is utilized to shape lower sheet first, then upper sheet is placed over, and the joint is made by clinching tool. It was stated [20] that today most automotive panels are made from high strength steel, and they are connected by means of spot welding. Such welds have higher tensile load, but lower fatigue strength due to the initiation and propagation of cracks in the joint.…”

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

“…Such welds have higher tensile load, but lower fatigue strength due to the initiation and propagation of cracks in the joint. On the other hand, when using clinching tools, it is necessary to use twice or more clinched joints to obtain tensile strength, but those joints are less prone to fatigue [20].…”

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

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FEM Numerical Simulations of the Mechanical Clinching Process of HC260Y Steel

et al. 2019

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This paper presents the results of FEM numerical simulations, of the HC260Y steelsheet mechanical clinching process. The starting tool parameters were chosen for the central composite design of experiments, in order to find out which tool parameters have the largest contribution to the sheet joint interlock. Assessment of the mathematical model, and analysis of variance (ANOVA) were performed within the design of experiments. This numerical analysis was done to find the most suitable tool geometry and tool work stresses, so that the tool sets for further experiments could be manufactured and results compared with numerical results.

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“…Y. Abe et al [20] presented research on clinching possibility of ultra-high strength steels. These steels have low ductility which results in high thinning of the upper sheet (necking).…”

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

Section: Figure 1 Tool Geometrymentioning

confidence: 99%

See 2 more Smart Citations

FEM Numerical Simulations of the Mechanical Clinching Process of HC260Y Steel

et al. 2019

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“…Although the material flow of the high strength steel and aluminium alloy sheets in clinching is improved by the optimised die shape, the improvement may be not enough to join the sheets for the large flow stress difference such as an aluminium and an ultra-high strength steel sheets. The mechanical clinching process with preforming of the lower sheet is developed for joining two ultra-high strength steel sheets 8) . In this process, the material flow was improved by controlling contact between the sheets.…”

Section: Introductionmentioning

confidence: 99%