Announcement and Abstract

Aachener Mechanik Seminar
Einladung zum Vortrag
A simple time-dependent model of an aging face
Vortragender:
Professor M.B. Rubin
Faculty of Mechanical Engineering
Technion - Israel Institute of Technology
32000 Haifa, Israel
E-Mail: [email protected]
Datum:
Montag, 03.05.2010, 14:00 h
Ort:
Seminarraum des IAM R 112,
Templergraben 64, 1. Etage
Abstract
Cosmetic surgery on the face typically involves separation, repositioning and tightening of the
outer skin layer. In order to increase longevity of the smoothed face it has become more common to tighten the underlying SMAS (Superficial Musculoaponeurotic System) layer in addition
to the outer skin. Previous measurements and analysis of these two tissues indicates that the
SMAS behaves more elastically and exhibits less viscoplastic relaxation than the facial skin.
Most mechanical analyses of cosmetic surgery treat the facial tissue as elastic. Recently, a set
of elastic-viscoplastic constitutive equations have been developed to model the responses of
these two facial tissues. The main objective of this study is to use these constitutive equations
to study the time-dependent evolution of the aging face. Specifically, material constants in the
constitutive model are adjusted to predict reasonable relaxation response of the facial tissue to
the long term pull of gravity. Ultimately, it is anticipated that such constitutive equations can be
used to help physicians select the best surgical procedure for each patient which optimizes the
longevity of the face lift operation.
Univ.-Prof. Dr.-Ing. M. Itskov
Univ.-Prof. Dr.-Ing. D. Weichert