Development of Anthropometric Specifications for the Large-Male Warrior Injury Assessment Manikin (WIAMan)
Abstract
Data from a previous study of soldier posture and body shape were analyzed to develop anthropometric specifications for an anthropomorphic test device (ATD) intended to represent a large-male Soldier for assessments of vehicle occupant protection in underbody blast. The large-male Warrior Injury Assessment Manikin (WIAMan) has target stature and body mass based on 95th-percentile values for male Soldiers in a recent Army study. Body landmarks and internal joint center locations were developed using data from 100 soldiers with a wide range of body size measured in a single squad seating condition. Regression methods were used to establish target values for the ATD. Laser scan data from 119 men in up to four seated postures were analyzed using principal component analysis and regression to obtain a statistical model predicting body shape as a function of overall body dimensions and surface landmark locations. Small adjustments to the posture and shape were made to obtain a symmetrical posture with the thighs horizontal and legs vertical. The head surface was generated through a statistical analysis of data from a separate study that included realistic scalp contours and face landmarks. Because the hand and foot shapes were not well measured in the whole-body scan data, scaled versions of the hand and foot were added. Pelvis geometry was generated through a statistical model based on data from medical images. The final anthropometric specification included the surface geometry as a polygonal model, internal joint centers and surface landmarks, and a polygonal model of the bony pelvis and sacrum.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 2022
- Accession Number
- AD1194097
Entities
People
- Matthew P. Reed