Biomedical Engineering Reference
In-Depth Information
Fig. 6.39 a Tissue direct stress S
33
and b shear stress S
13
along the defined node paths (see
Fig.
6.36
) initiating at skin level (0 mm) and leading to the bone surface (ischium) for E-BCSS 1
(top) and E-BCSS 2 (bottom)
Figures
6.41
and
6.42
illustrate the direct stress S
33
distribution and the von
Mises equivalent stress distribution at the ischial region of systems E-BCSS 3 and
E-BCSS 4. The internal tissue stress is qualitatively similar for the male and
female models. This is affirmed by the diagrams in Fig.
6.43
which depict stress
values along defined node paths (see Fig.
6.40
). Again, an increase in tissue stress
can be observed near the ischial bone surface as well as the same order of
magnitude of direct and shear stress.
6.3.4.2 Elastic Body-Airplane Seat-System (E-BASS)
The
body-airplane-seat-systems
subsequently
listed
are
employed
in
the
mechanical interaction FE-analysis:
• E-BASS 1: Airplane seat B and BoMo7 (male model), Fig.
6.44
a
• E-BASS 2: Airplane seat A and BoMo11 (female model), Fig.
6.44
b
Airplane seat A is composed of a foam core with a fire blocking coating and
leather cover, Fig.
6.35
c, and airplane seat B is composed of a fabric lining with
leather cover attached to an aluminium frame, Fig.
6.35
d. The material property
