Fastened Joint Stiffness Calculator

Calculates effective shear and tension fastener stiffness for a single or double lap joint.

• Translational components calculated
• Rotational components estimated
• All six degrees of freedom for input in finite element model
• Input multiple joint configurations at once
• Huth method currently available

Joint Properties

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Units: English / Metric (ie: in² or mm²)

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Method (one or more):

Huth, Schwarmann (Airbus)
Swift (Douglas)
Tate & Rosenfeld
Boeing
Vought
Delft University

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DS - double shear when checked

Type:
bm - bolted metallic
rm - riveted metallic
bg - bolted graphite/epoxy

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Joint Properties Input

n	d ()	Ef ()	t1 ()	t2 ()	E1 ()	E2 ()	DS	Type
1								bm rm bg

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References

1. Huth H, Influence on Fastener Flexibility on the Prediction of Load Transfer and Fatigue Life for Multiple-Row Joints, ASTM STP 927 (1986).
2. Huth H, Zum Einfluβ der Nietnachgiebigkeit mehrreihiger Nietverbindungen auf die Lastübertragungs und Lebensddauervorhersage, Bericht Nr. FB-172 (1984).
3. Tate. M. B. and Rosenfeld. S. J., Preliminary Investigation on Loads Carried by Individual Bolts in Bolted Joints, NACA TN-I051. National Advisory Committee for Aeronautics, Washington, DC. 1946.
4. Unpublished reports of the Boeing Co., Renton. WA.
5. Swift, T., Development of the Fail-Safe Design Features of the DC-10 in Damage Tolerance in Aircraft Structures ASTM STP 486, American Society for Testing and Materials, Philadelphia, 1971. pp. 164-214.

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DISCLAIMER: The methods and calculation on aNOWysis.com are provided as means to educate the reader. There is no warranty, expessed or implied, as to the relevance or accuracy of the methods or calculations. All calculations should be checked by a qualified analyst for appropriateness and accuracy. We will not be held liable for any damages, injuries or deaths caused by using methods or calculations from this site.