Research on a Distributed Parameter Mathematical Model of the Human Body in Dynamic Mechanical Environments.
Abstract
The report presents a literature survey of the present state of the art of lumped and distributed parameter models of the human body. Modeling techniques using elastic and viscoelastic media are considered. It is concluded that lumped parameter models of an increased number of degrees-of-freedom are necessary to improve model quality. Computer programs are presented that should simplify such an effort. In particular, the numerical values of the system parameters can be determined with greater accuracy. The partial development of a multi-degree-of-freedom model is demonstrated. The extensive use of the mentioned computer programs should result in considerably more complex models than are available now. No whole-body distributed parameter models have been proposed in the literature. Existing models represent mainly skeletal sections such as the spinal column. A model of the spinal column is proposed in this report that considers the discontinuity in bending stiffness between the lumbar and thoracic spine and the curvature of the lumbar spine. This type of model appears to be very promising because it seems to explain some observed effects attributed to nonlinear properties. It is also recommended that research be initiated to develop hybrid models, that is, models consisting of both lumped parameter and distributed parameter sections. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1970
- Accession Number
- AD0717764
Entities
People
- Horst E. Krause
- Mehdi Shirazi
Organizations
- University of Dayton Research Institute