Long-Bone Injury Criteria for Use with the Articulated Total Body Model
Abstract
An existing computer program, the Articulated Total Body (ATB) model, calculates joint loadings, contact forces and segment positions for a 15-segment model of a human body subjected to high accelerations and wind loads. This project has attempted to augment this model by providing a means of predicting fracture in the long bones. Failure criteria which have been suggested in the literature are discussed, and a new set of criteria is developed. These new fracture criteria are based on reported stress vs. strain and strain rate properties for human bone in compression, and have been extended to also provide tension and shear loading criteria. Two forms of the criteria for ultimate stress are developed, one in terms of stress rate and the other in terms of pulse length. Demonstration results are presented for an aircraft ejection simulation which shows the maximum stresses and allowable stresses (both for stress rate and pulse length) as functions of time for the left lower arm.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA097328
Entities
People
- Tim Hight
Organizations
- Air Force Research Laboratory