ADHESIVE BONDED JOINT MODULE INFORMATION

APPLICATION:

The Designer or Stress Engineer can use this module to ;

• Determine joint failure strength for existing joints. Helpful when trouble shooting.
• Conduct Parametric and Optimisation studies relating to joint geometry/rivet/strength variations.
• Calculation of joint width required to sustain specific loading.
• Rivet minimisation studies, ie Reduction of rivet count, eg, by changing joint adhesive-geometry.

OPTIONS:VB3:COMBINED RIVET AND ADHESIVE BONDED LAP JOINT STRENGTH.

This Module calculates the strength of the combined Rivet/bond lap joint and displays its probable failure mode.

Failure modes displayed include;

• Bearing Failure.
• Shear out Failure.
• Net tension failure.

The combined failure strength is determined using a mathematical approach that combines the ultimate failure strengths of the rivet joint with the Volkersen Elastic strength of the adhesive.

JOINT INPUT VARIABLES:

Virtually any variation of Joint/rivet/adhesive configuration may be quickly explored for strength and failure mode. The parameters that may be varied in the calculation include;

• Joint width.
• Joint thickness. Note, that unequal joint coupon thickness are accepted.
• Coupon Stacks of more than two can be used. ( See tutorial ).
• Joint overlap.
• Joint materials.Note, Top and bottom coupons may be of different materials.
a) Youngs Modulus. b) Material Strength.
• Rivet to joint edge distance.
• Rivet diameter.
• Number of rivets.
• Rivet material.
• Ductile adhesive strength.
• Adhesive shear modulus.
• Adhesive laid-down thickness.

OUTPUT:

Ultimate failure strength and mode of failure of combined rivet/bond joint.