Contents - Index


Circular Section

 

 

This procedure  returns properties of a circular section.

 

Inputs

d = diameter [m, ft]

 

Outputs

A = area [m^2, ft^2]

I = moment of inertia about centroid [m^4, ft^4]

Z = section modulus [m^3, ft^3]

J =  polar moment of inertia about centroid  [m^4, ft^4]

rho = radius of gyration about centroid [m, ft]

 

 

Example:   

$UnitSystem SI K Pa 

$VarInfo A units=m^2

$VarInfo I  units=m^4

$VarInfo J units=m^4

$VarInfo rho units=m

$VarInfo Z units=m^3

d=0.12 [m]

Call moi_circle(d: A,  I,  Z, J,  rho)

 

{Solution:

A=0.01131 [m^2]

I=0.00001018 [m^4]

J=0.00002036 [m^4]

rho=0.03 [m]

Z=0.0001696 [m^3]

}

 

Reference:  Juvinall and Marshek, 5th edition, Fundamentals of Machine Component Design, Appendix B-1a

 

Moment of Inertia Index