Clinch joint

  • 15-Mar-2010 06:08 EDT

The clinch joint, developed by Band-It and the Edison Welding Institute, is a mechanical method that joins dissimilar metal tube using band clamps. The technology can replace welding in some areas of the automobile. The joint, consisting of aluminum and steel tubing, simulates structural interfaces found in a vehicle’s exterior frame, chassis, seat frame, and instrument panel. During development, models of the joint were created to correlate the pulling force of the band and the pressure applied to the nodal intersection; finite-element analyses were then conducted to calculate the pressure required to crimp the aluminum tube to different depths using bands of different widths. Based on the results, nodal geometry determined which design combination of crimp depth and band width provided the optimal mating condition. The joint provides a cost-effective alternative to welding and eliminates the amount of welding byproducts released into the environment.

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