Gore–Gilet Acoustic Guitar Model — 1/2/3/4 DOF + Peak Labels

Model Complexity

Order

4‑DOF

Show peak labels Force target: Air (1DOF) • Top (2–4DOF)

The solver and visible controls adapt to the chosen order. Peaks are auto‑labeled by dominant subsystem.

Environmental

Ambient Air Temp (°C / °F)

20.0 °C

Altitude (m)

0 m (0 ft)

ρ ≈ 1.205 kg/m³ • c ≈ 340.0 m/s

Driving Force F (N)

0.40

Air (Helmholtz) Mode

Soundhole Area A_h (m²)

0.00550 m² (diameter 83.6 mm)

Moving Air Mass m_a (g)

0.50 g

Cavity Volume V (m³)

0.0141 m³ (14.1 L)

Air Damping R_a (N·s/m)

0.0050

Top Plate Mode

Top Plate Mass m_t (g)

43.0 g

Top Stiffness K_t (N/m)

42700 N/m

Top Damping R_t (N·s/m)

1.5

Radiating Area A_t (m²)

0.0390

Back Plate Mode

Back Plate Mass m_b (g)

94.0 g

Back Stiffness K_b (N/m)

130000 N/m

Back Damping R_b (N·s/m)

7.0

Back Area A_b (m²)

0.0400

Sides / Rim Mode

Sides Mass m_s (g)

800.0 g

Sides Stiffness K_s (N/m)

1400000 N/m

Sides Damping R_s (N·s/m)

10.0

Sides Area A_s (m²)

0.0250

Tip: the model is coupled. Peaks shift together as you change air volume, plate stiffness, or effective areas. Watch T(1,1) / A(0,1) interactions by nudging V, A_h, and K_t.

Fit My Guitar

Tell the solver what your guitar currently measures and it will nudge the baseline sliders to match.

All fields are optional. Provide whatever modal frequencies or structural values you know and the baseline sliders will be adjusted toward them.

Target T(1,1)₁ (Hz) Target T(1,1)₂ (Hz) Target T(1,1)₃ (Hz) Top Mass m_t (g) Top Stiffness K_t (N/m) Back Mass m_b (g) Back Stiffness K_b (N/m) Cavity Volume V (m³)