How do you find the moment of inertia of a bolt group?

Where: cx = the horizontal distance of the bolt from the center of gravity. cy = the vertical distance of the bolt from the center of gravity. Ip = the polar moment of inertia of the bolt group = Ix + I.

How do you calculate a bolt circle?

To calculate the location of the center of bolt holes:

  1. Enter the number of holes, n .
  2. Fill in the radius of bolt circle, R .
  3. Insert the angle of the first hole, A .
  4. Enter the x coordinate for center of the bolt circle, xc .
  5. Enter the y coordinate for center of the bolt circle, yc .

How do you find the axial load of a bolt?

Axial Force Ff, by using Equation(1) Ff=0.7× y×As 0.7×112×20.1 1576[kgf] A bolt is tightened by torque, torque inclination, rotating angle, stretch measurement and other methods. The torque method is widely used due to its simplicity and convenience.

How do you calculate tension torque on a bolt?

The Torque/Tension Equation is a method used to estimate the torque/tension relationship in an assembly. T = (K D P)/12 can be used to developt a torque value that will achieve a certain tension or clamp load.

What is bearing capacity of bolt?

Bearing strength at bolt holes. Bearing strength at bolt holes in connected part (5 x ½ in. plate) At edges, Lc = 1.25 – hole diameter/2 = 1.25 – (3/4 + 1/16)/2 = 0.844 in. Rn = 0.75 x (1.2 Lc t Fu) = 0.75 x (1.2 x 0.844 x 0.5 x 58) = 22.0 3 2 kips.

What is the difference between PCD and BCD?

Chainrings are sold by number of bolts and PCD or BCD, which is the same thing and stands for Pitch Circle Diameter or Bolt Circle Diameter. Easier than diameter to measure is the centre-to-centre distance between two adjacent bolts.

How do you find the moment of inertia of a rod?

Moment of inertia of a rod whose axis goes through the centre of the rod, having mass (M) and length (L) is generally expressed as; I = (1/12) ML 2 The moment of inertia can also be expressed using another formula when the axis of the rod goes through the end of the rod. In this case, we use;

What is the bolt group moment of inertia?

RE: Bolt Group Moment of Inertia. For a bolt group, the Ip is the sum of all individual Ip of each bolt that makes up a group. The force due to moment that acts on each bolt then becomes: RE: Bolt Group Moment of Inertia. I believe what you are showing is for a torsional moment (or an eccentric shear) on a bolt group.

How to find the center of gravity of a bolt group?

I believe the solution provided by asixth applies if the moment is about an axis parallel to the axis of a bolt If your bending moments are about an axis perpendicular to the axis of the bolt, find the center of gravity of the bolt group in each direction. Then I=ΣAd² in each direction.

How does moment of inertia affect acceleration?

The greater an object’s moment of inertia, the less rotational acceleration it has when acted upon by a torque (i.e. a force causing rotation).