Find efficiency of Bolted joint ( ηJoint ).
Input of lap joints data:
The nominal size of bolts : mm.
Diameter of bolt hole : mm.
Yield strength of bolt, fyb : mm.
Ultimate strength of bolt, fub : mm.
Fe-410(E 250) plates:
Ultimate stress, fu : MPa.
yield stress, fu : MPa.
Partial safety factor, γml : MPa.
Edge distance, e : mm.
Pitch distance, p : mm.
Strength of plates in joint:
Thickness of the plate, t mm.
Width of the plate, b mm.
Number of holes in the weakest section mm.
Net area at weakest section mm2.
Design strength of plates in the joint kN.
Strength of bolts:
Total number of bolts mm.
Total number of shear planes at thread, nn mm.
Total number of shear planes at shank, ns mm.
Nominal shear strength, Vnsb kN.
Design shear strength, Vdsb kN.
Design strength in bearing:
Least value of Kb:
e/(3*do) mm.
P/(3*do)-0.25 mm.
fub/fu mm.
1.0 kN.
Least value of Kb:
Nominal strength in bearing , Vnpb: kN
Design strength in bearing, Vnpb: kN
Bolt value, V : kN
Efficiency of joints:
Area of solid plate, Dplate : mm2
Design strength of solid plate, Dplate : kN
Efficiency of the joint, ηjoint : %
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