How do you calculate shear capacity bearing capacity of a bolt?
Bearing strength at bolt holes. At edges, Lc = 1.25 – hole diameter/2 = 1.25 – (3/4 + 1/16)/2 = 0.844 in. At other holes, s = 2.5 in, Lc = 2.5 – (3/4 +1/16) = 1.688 in. At edges, Lc = 1.25 – hole diameter/2 = 1.25 – (3/4 + 1/16)/2 = 0.844 in.
What is polar moment of inertia in simple words?
Simply put, the polar moment of inertia is a shaft or beam’s resistance to being distorted by torsion, as a function of its shape. The greater the magnitude of the polar moment of inertia, the greater the torsional resistance of the object.
What is the minimum pitch distance?
Explanation: Pitch shall not be more than 16t or 200mm, whichever is less in tension member where t is thickness of thinner plate. Pitch shall not be more than 12t or 200mm, whichever is less in compression member, where t is thickness of thinner plate.
How do you calculate bolt stress?
For this reason, the tensile stress area is calculated through an empirical formula involving the nominal diameter of the fastener and the thread pitch. P = 120,000 psi x 0.3340 sq. in P = 40,080 lbs. As the fastener approaches the maximum strength of the threaded portion, it will permanently deform.
How do you calculate the shear strength of a pin?
Offline Form submit failed
- Shear Stress Equation Single Shear. Shear Stress Average = Applied Force / Area. or. Shear Stress ave.= F/( π r 2)
- Bearing Area Stress Equation for Plate and Bolt or Pin. Bt= F / (t d) Where:
- Factor of Safety. Factor of Safety = F.S = ultimate stress / allowable stress. Therefore:
What is the strength of 20mm diameter bolt in double shear?
Strength of bolt in shear = Anbfub/(√3 x 1.25) = 156.83x400x10-3/1.25x√3 = 28.97kN. 5. What is the value of kb in nominal bearing strength for a bolt of 20mm diameter of grade 4.6? kb = minimum of (e/3d0 , p/3d0 -0.25, fub /fb, 1) = 0.5.
How do you calculate bearing stress?
To calculate bearing stress, divide the force over the contact area between the fastener and hole. Theoretically, it is often the simple area of the bearing surface.
What is polar moment of inertia used for?
Simply put, the polar moment of inertia is a shaft or beam’s resistance to being distorted by torsion, as a function of its shape. The rigidity comes from the object’s cross-sectional area only, and does not depend on its material composition or shear modulus.
How is the polar moment of inertia calculated?
When you calculate polar moment of inertia for a bolt group or a screw group, the “area” of each bolt or screw is considered to be 1.0, with NO UNITS. That is why polar moment of inertia is in 2.
How are moments of inertia of a bolt pattern related to?
It should be noted that this calculation is directly analogous to the calculation of the centroid of a cross section . The moments of inertia of a bolt pattern indicate the ability of the pattern to resist bending moments.
How is the shear force of a bolt calculated?
Shear Forces. The shear force on a bolt due to moment about the Z-axis is calculated as: where is the centroidal moment about the Z-axis and is the pattern’s polar moment of inertia. The value is the shortest distance between the bolt and the centroid and is calculated as . The shear force is then resolved into X-…
What is the stress group for boltgrp calculator?
‘BOLTGRP’ Program Bolt Group/Stress Analysis per AISC 9th Ed. (ASD) Bolt Data Bolt Stress Bolt Group(<=75) Bolt Group(<=25)