Numerical calculation of design shear and bearing strength of bolted connection.

Example:1 Two plates 200mm × 8mm are to be connected by 16mm diameter bolts in a lap joint. Calculate the strengths for the black type (Bearing type bolts). Take 4.6 grade of bolts. Take ultimate tensile strength of plate = 410 N/mm2.

Shearing Strength of a Lap Joint Bolt
The shearing strength of a bolt in a lap joint refers to the maximum shear force the bolt can endure before it fails. Shearing occurs when the applied force causes the bolt to be sliced along the plane of the joint. Factors influencing the shearing strength include the bolt material's shear strength and the cross-sectional area of the bolt. The design must ensure that the applied forces do not exceed the bolt's shearing capacity, which could lead to a failure of the joint.

Bearing Strength of a Bolt
Bearing strength concerns the material around the bolt hole in the plates being joined. It represents the maximum load the plates can support without significant deformation or failure around the bolt holes. Bearing strength is influenced by the diameter of the bolt, the thickness of the plates, and the bearing capacity of the plate material. Proper design must ensure that the bearing stress does not exceed the material's bearing capacity, preventing elongation or tearing of the bolt holes.