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This paper aims to present the methodology used in the European project HUMOS (Human Model for Safety) to generate human body meshes comprised between the 5th percentile female and the 95th percentile male from the 3D geometry of a complete human body in sitting position close to the 50th European percentile male morphology. This process is based on geometrical data acquisition performed on volunteers and on cadavers. Measurements concern external anthropometric dimensions (more than 50) but also internal ones (more than 400). Data have been analysed by statistical methods in order to establish relationships between external dimensions and internal ones. A scaling law for the prediction of internal organs dimensions from the external ones has been elaborated. The above data have been implemented in a scaling tool, which allows transforming the existing mesh into a personalised dimension. The software uses kriging methods to create the new meshes.

A 50th percentile male pelvis finite element model was designed for impact simulation. Shell elements represented the pelvic bone, which geometry was taken into account. Non linear viscous springs accounted for soft tissues connecting skin to bone structure, and body segments inertia around the pelvis were represented using rigid bodies. Geometric and mechanical characteristics were taken either from litterature or by identification to in house experimental results. Three dimensional movements were reproduced by the model for static lateral loading and dynamic lateral impact simulation at two different velocities, 3.5 and 6.5 m/s, with a good agreement with experimental results. This model takes into account pelvic bone geometry, allowing an appreciation of its deformation and therefore injury risk.