2-DOF SYSTEM CALCULATOR

Design and analyze two-degree-of-freedom systems including tuned mass dampers (TMD) and vibration absorbers.

System Parameters
Define the 2-DOF system properties

Primary System

f₁ = 5.03 Hz
ζ₁ = 0.0158

Absorber (TMD)

0.10
m₂ = 1.000 kg
k₂ = 826.4 N/m
c₂ = 10.616 Ns/m
f₂ = 4.58 Hz
ζ₂ = 0.1846
Frequency Response Function
Comparison of SDOF (no absorber) vs 2-DOF (with absorber) response
11111222233344456678910111316192227323947566881100Frequency (Hz)0.000.000.010.101.0010.00100.00|X/F| × k₁f₁f₂
  • SDOF (no absorber)
  • 2-DOF Primary (m₁)
  • 2-DOF Absorber (m₂)
Phase Response
1111111222222233334444555667788910111213141617192124273033374146515764717988100Frequency (Hz)-180-90090180Phase (°)
  • Primary (m₁)
  • Absorber (m₂)