Lab 17: 6061-T6 Aluminum Beam FEA Stress & Deflection

Spatial Von Mises stress (σ) & vertical displacement (δ) under 3-point bending for equal-mass profiles (σy = 276 MPa, σu = 310 MPa)

Model A: 90° Square Tube

Kt,A = 1.65 · IA = 1.84 cm4

Elastic Safe
Peak Stress 249.6 MPa
Max Deflection 3.66 mm
Safety Factor 1.11

Model B: 109.5° Bio-Helical

Kt,B = 1.08 · IB = 3.82 cm4

Elastic Safe
Peak Stress 118.0 MPa
Max Deflection 1.76 mm
Safety Factor 2.34
Interactive Load & Geometry Controls
5,000 lbs
1.00 m
3.18 kg
Area A = 11.78 cm2 · Load F = 22.24 kN 6061-T6 Al: E = 68.9 GPa
Spatial Stress Distribution & Spanwise Deflection