AS4100-1998-Mo_Moment_Calculator

Buckling Moment Calculator for Steel Structures - AS4100:1998

REPL - View Live CLI Output:

Refer to link below to run the code from Repl.it CLI https://replit.com/@daveh87/MoCalculator?embed=1#main.py

Introduction

I am a Structural Engineer from Sydney Australia, i've created a main.py python script to calculate the Alpha_s & Alpha_m values as well as the buckling moment for steel members in bending.

Setup

The first thing to do is to clone the repository:

$ git clone https://github.com/daveh07/AS4100-1998-Mo_Moment_Calculator.git

Py Version: Python 3.9

Create a virtual environment and run main.py

NOTE:

Please feel free to add any contributions! This is a basic calculation for most common cases of Alpha_S. Further code clauses to be added for alpha_m.

Example Calculation

Steel Section 460UB82.1 Portal Frame Column

Section Properties:

Effective Length (mm), Le = 6000

Moment of Inertia about y-axis - Iy (mm4), Le = 18600000

Warping Constant Iw (mm6)= 919000000000

Torsion Constant, J = 701000

Shear Modulus of Elasticity 80x10^3 (MPa), G = 80000

Youngs Modulus of Elasticity, E (MPa) = 200000

Reduction Factor PHI = 0.90

Section Capacity (kNm) = 551.1

Design Moments (kNm):

M*m = 270

M*2 = 230

M*3 = 175

M*4 = 155

Results:

Buckling Moment = 329.52kNm

Alpha_m = 1.4