Biomedical Engineering Reference
Fig. 5.49 BoMo 4, male model for simulation in recumbent position: a bone structures (spine,
pelvic bone, os sacrum), b gluteal and upper leg muscle groups
Data for the female and male model in the recumbent position
Female (half model, original
Female (half model, modified
Male (half model, original
Male (half model, modified
mechanical interaction of the male and female body with body support devices.
The outer skin surfaces were based on 3D-body scans in the upright position, cf.
Figs. 5.47 , 5.48 , and 5.49 . Emphasis was laid upon the gluteal and upper leg
regions, to ensure realistic kinematics during simulation of contact interaction with
the supporting device. The anatomy of the body parts was based on MR-scanning
data. To ensure realistic mass distribution throughout the model, lumped point
masses were assigned to meet the mass of the particular body part and the total
body mass, cf. Table 5.10 . The soft tissue regions were modelled with quadratic
tetrahedral continuum elements and were assigned non-linear hyperelastic in vivo
material properties calculated from the particular volunteer.
The male and female models are presented with original and modified anatomy,
cf. Table 5.11 . The original anatomy was derived from the MR-scan data of all
internal structures, whereas the modified anatomy was derived from a combination
of the internal structures of BoMo 1 with the outer 3D-scan data. The intention
behind this approach was to be able to consider natural biological variability in