Middle-ear models (13 of 49)

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1.1 Electrical-mechanical-acoustical analogies

1.1 Electrical-mechanical-acoustical analogies (cont'd)

1.2 Middle-ear circuit models

1.2 Middle-ear circuit models (cont'd)

1.2 Middle-ear circuit models (cont'd)

1.3 Problems with lumped models

2. Finite-element method

2. Finite-element method (cont'd)

2. Finite-element method (cont'd)

3.1 Model parameters

3.1 Model parameters (cont'd)

3.2 Low-frequency simulation results

13 of 49

3.2 Low-frequency simulation results (cont'd)

3.2 Low-frequency simulation results (cont'd)

3.3 Higher-frequency simulation results

3.3 Higher-frequency simulation results (cont'd)

3.3 Higher-frequency simulation results (cont'd)

3.3 Higher-frequency simulation results (cont'd)

3.4.1 Effects of parameter variations

3.4.1 Effects of parameter variations (cont'd)

3.4.1 Effects of parameter variations (cont'd)

3.4.1 Effects of parameter variations (cont'd)

3.4.1 Effects of parameter variations (cont'd)

3.4.2 Effects of asymmetry

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.3 Wave propagation

3.4.3 Wave propagation (cont'd)

3.4.3 Wave propagation (cont'd)

4. Modelling of ossicles and ligaments

4.1 Bending of manubrium

4.2 Incus/stapes coupling

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

5. Non-linear viscoelasticity

5. Non-linear viscoelasticity (cont'd)

5. Non-linear viscoelasticity (cont'd)

5. Non-linear viscoelasticity (cont'd)

5. Non-linear viscoelasticity (cont'd)

6. Simulation-based inference

6. Simulation-based inference (cont'd)

3.2 Low-frequency simulation results (cont'd)

Convergence

Results will converge monotonically if

the element formulation is ‘compatible’, or ‘conforming’
(e.g., Bathe K-J (1982): Finite element procedures in engineering analysis, Prentice-Hall, Englewood Cliffs, xiii+735 pp.; p. 167 etc.)
the geometry doesn’t change as the mesh is refined

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BMDE-501 Modelling middle-ear mechanics

Last modified: 2024-10-21 12:43:04

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