Next Finite-Element Modelling of<br> Nonlinear Behaviour of the Middle Ear 1. Outline 2. Nonlinear behaviour of the middle ear 2. Nonlinear behaviour of the middle ear (cont'd) 2. Nonlinear behaviour of the middle ear (cont'd) 3.1 Stuhlman (1937) 3.2 Stuhmiller (1989) 3.3 Price & Kalb (1991) 3.4 Chen (1993) 3.5 Wada & Kobayashi (1990) 3.6 Pascal <em>et al.</em> (1998) 4.1 What? 4.2 Why? 4.3.1 Choice of element geometry 4.3.2.1 Type of problem 4.3.2.2 Assumptions about mechanical behaviour 4.3.2.3 Material laws 4.3.2.4 Methods for formulation 19 of 41 4.3.4 Specification of material properties 4.3.5.1 Linear calculation of static responses 4.3.5.2 Natural frequencies and modes 4.3.5.3 Time-domain responses and frequency responses 4.3.6 Testing for convergence 5. Nonlinear finite-element modelling 5.1 Solution methods 5.1 Solution methods (cont'd) 5.2 Sources of nonlinearity 6. Nonlinear behaviour of tissues 6. Nonlinear behaviour of tissues (cont'd) 6.1 Bone 6.2 Soft tissues 6.2.1 Hysteresis 6.2.2 Preconditioning 6.2.3 Rate dependence 6.2.4 Creep and relaxation 7. Example 7. Example (cont'd) 8.3 Free 9. Acknowledgements 10. References

4.3.3 Mesh generation

To obtain a topologically correct mesh of well-shaped elements.

The division into elements may partly correspond to natural subdivisions of the structure. For example, the eardrum may be divided into groups of elements corresponding to different material properties.

Automatic mesh generation makes it feasible to generate meshes of varying coarseness, for convergence testing.

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R. Funnell
Last modified: Sun, 2002 Jan 27 17:15:20
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