Single bolt subjected to bending..
Single bolt subjected to bending..
(OP)
hi.. I need to determine the tensile load carrying capacity for 10.9 grade M30 dia bolt.
Shear force is 75 kN
Tensile force is 12 kN
also I am applying some moments to the bolt that is 15 kN-m.
I have only one shear plane available
I just want to know how this moment is distributed in the bolt as I am applying this perpendicular to the shear plane of the bolt.
Please help me on this..
Thanks..
Shear force is 75 kN
Tensile force is 12 kN
also I am applying some moments to the bolt that is 15 kN-m.
I have only one shear plane available
I just want to know how this moment is distributed in the bolt as I am applying this perpendicular to the shear plane of the bolt.
Please help me on this..
Thanks..






RE: Single bolt subjected to bending..
Brian C Potter, PE
http://simplesupports.wordpress.com
RE: Single bolt subjected to bending..
I got confused while using bending equation M*y/I the stress developed is nothing but bending stress.. which is not tensile stress so how can I add/ subtract it.. also how to find the design bending strength for 10.9 bolt??
Thanks..
RE: Single bolt subjected to bending..
RE: Single bolt subjected to bending..
Brian C Potter, PE
http://simplesupports.wordpress.com
RE: Single bolt subjected to bending..
so I am trying to connect it with M30 10.9 grade bolt.
I tried with the bending equation but the stress ratio is more than the allowable ratio..
were the allowable tensile stress for 10.9 grade bolt is 700 N/mm2
As I am trying to fix 14 meter unsupported curtainwall with this one bolt both the ends .. I have provided pin joint but still due to some eccentricity in the structure this moment is created..
Please excuse me for not providing the enough information..
RE: Single bolt subjected to bending..
RE: Single bolt subjected to bending..
RE: Single bolt subjected to bending..
I do not recommend using hardened structural bolts (A325/A490) bolts in bending. Quenched and tempered material has very little ductility, related to moment/bending forces. These are intended for shear and tensile forces.
www.FerrellEngineering.com
Providing fabrication and erection efficient structural design of connections. Consulting services for structural welding and bolting.
RE: Single bolt subjected to bending..
Rb = bending stress/allowable stress (ftu or plastic bending?)
or applied moment/allowable moment
and Rt = tension stress/ftu or tesnion force/allowable tension
usually it's a bad idea to combine bolt bending with bolt tension. usually you provide enough preload so the joint doesn't gap and the moment isn't carried by the bolt.
Quando Omni Flunkus Moritati
RE: Single bolt subjected to bending..