Model Data Structure

The data structure of the FE SET models is based on the VIVA+ model, and if needed more details can be found in the VIVA+ repository under Model Data Structure.

The identifiers (ID) for part, section, material, coordinate systems, curves and etc. are defined by a six-digit number that identifies body region, sagittal aspect (left/right), component within the body region and material specification.

Node and element identifiers are defined by a seven-digit number that identifies body region and sagittal aspect (left/right).

Body regions

Identifier	Body Region
1xxxxx	Head
2xxxxx	Neck
3xxxxx	Upper Extremities
4xxxxx	Thorax
5xxxxx	Abdomen
6xxxxx	Pelvis
7xxxxx	Lower Extremities

Sagittal Aspect (Left/Right side of the body)

The position of the anatomical entity with respect to the mid-sagittal plane, i.e. left or right side of body, is described by the second digit of the identifier.

Identifier	Sagittal Aspect
x0xxxx	Left / Centre
x1xxxx	Right

Component/Organ

The 3rd, 4th and 5th digits identifies the components of the body regions, from superior to inferior direction. If multiple components are present at the same level, the components are numbered from the medial to lateral direction and anterior to posterior. If there are less then 10 components in a body region, the 3rd digit counts the components, and the 4th and 5th digit counts the subcomponents. If there are more than 10 components in a body region, the 3rd and 4th digit counts the components (starting with 01) and the 5th counts the subcomponents.

Identifier	Component
xx1xxx	First component of body region
xx2xxx	Second component of body region
xx3xxx	Third component of body region
xx4xxx	Fourth component of body region
...	...

Identifier	Component
xxx00x	First sub-component
xxx01x	Second sub-component
xxx02x	Third sub-component
xxx03x	Fourth sub-component
...	...

Material Specification

Identifier	type
xxxxx1	Seatbelt
xxxxx2	Foam
xxxxx3	Rigid
xxxxx4	Null
xxxxx5	Spring
xxxxx6	Damper