### Abstract

The report reviews the results on shear strength of press
joined connections manufactured and tested in the Finnish
research project Connection Technologies for Thin Walled
Steel Structures where the 'standard' round and
rectangular clinches in hot-dip galvanised light-gauge
steel were studied. The basic principles of the behaviour
of clinches in shear are discussed and the difference
between round and rectangular is demonstrated
highlighting the importance of the internal geometry.
Simple models based on the failure mode to estimate shear
strength are presented for a round clinch and for a
rectangular clinch with a load parallel or perpendicular
to it. The models were tested using the experimental data
available. A good correlation was achieved for
rectangular clinches with standard materials of equal
thickness. The model for the case where the force is
perpendicular to a rectangular clinch can be readily used
but for the parallel case the internal geometry of clinch
should be known. The model for round clinches cannot be
readily used in the practice because it requires
knowledge of the internal geometry and the material
strength after forming of clinch.
The tests showed that neither corrosion exposure nor low
cycle fatigue had no influence on shear strength. The
tests with multiple clinches in row indicated slight or
no decrease in strength compared to single clinches
depending on the clinch. The tests with very high
strength heavily cold- worked steel showed that it can be
clinched but the relative strength remains low compared
to standard materials.
The methods of quality control are discussed and the
accuracy of the common practice to measure two control
dimension is considered to be doubtful.
The deformation capacity of a clinch is considered to be
insufficient for load bearing connections because of the
brittle nature. A margin of extra safety is proposed in
the design of force transferring clinched connections.

Original language | English |
---|---|

Place of Publication | Espoo |

Publisher | VTT Technical Research Centre of Finland |

Number of pages | 54 |

ISBN (Print) | 951-38-5666-6 |

Publication status | Published - 2000 |

MoE publication type | Not Eligible |

### Publication series

Series | VTT Tiedotteita - Meddelanden - Research Notes |
---|---|

Number | 2029 |

ISSN | 1235-0605 |

### Keywords

- light gauge steel
- clinched connections
- shear strength
- press joined connections
- failure
- round clinches
- rectangular clinches
- tests

## Fingerprint Dive into the research topics of 'Shear strength of clinched connections in light gauge steel'. Together they form a unique fingerprint.

## Cite this

Helenius, A. (2000).

*Shear strength of clinched connections in light gauge steel*. VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 2029