Wrj. Funnell et Wf. Decraemer, ON THE INCORPORATION OF MOIRE SHAPE MEASUREMENTS IN FINITE-ELEMENT MODELS OF THE CAT EARDRUM, The Journal of the Acoustical Society of America, 100(2), 1996, pp. 925-932
The mechanical behavior of the eardrum has previously been shown to de
pend critically on its shape, but accurate shape measurements have bee
n difficult to make. Phase-shift moire topography provides a valuable
technique for measuring such shapes, and measurement in the presence o
f large static pressures facilitates the determination of the boundari
es of the pars tensa, pars flaccida, and manubrium. New measurements o
f the shape of the cat eardrum are presented. The presence of hysteres
is in the pressure-displacement response is demonstrated. The shapes a
re incorporated in individualized finite-element models for four diffe
rent ears, and the variability between and within animals is examined.
Fixed-manubrium low-frequency displacements are simulated and compare
d for the different models. (C) 1996 Acoustical Society of America.