shear fatigue in bolts

[dgkhan]

Any body has any informayion if bolt shear increase and decreas due to repeat load ( no reversal)what is the allowable stress reduction due to fatigue. Thanks.

 

[Ron]

Fatigue in shear is rare. Not sure you'll find much on that. Any dissenters?

 

[ishvaaag]

Just company to the subject...

http://www.speautomotive.com/SPEA_CD/SPEA2004/pdf/c/c3.pdf

by the way my car had once one of these failures on chasis support (over transmission? no mechanical here).

This second seems a very good study

http://www.civil.ualberta.ca/structures/reports/SER227Josi,Grondin,andKulak.pdf

http://www.aisc.org/assets/0/544/550/668/bc18df06-44b2-456a-bb71-13d65088cf14.pdf

http://www.kxinc.com/content/Kx Brochures/Bolted_Joint_Tech_Brief.pdf

http://www.dot.ca.gov/hq/esc/techpubs/manual/bridgemanuals/ca-to-aashto-lrfd-bds/page/v3/sec_6.pdf