Accession Number : AD0717764

Title :   Research on a Distributed Parameter Mathematical Model of the Human Body in Dynamic Mechanical Environments.

Descriptive Note : Final technical rept. 16 May 69-15 May 70,

Corporate Author : DAYTON UNIV OHIO RESEARCH INST

Personal Author(s) : Krause,Horst E. ; Shirazi,Mehdi

Report Date : DEC 1970

Pagination or Media Count : 151

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)

Descriptors :   (*HUMAN BODY, MATHEMATICAL MODELS), HUMANS, PHYSIOLOGY, BIOPHYSICS, ANATOMY, MODELS(SIMULATIONS), COMPUTER PROGRAMS, MUSCULOSKELETAL SYSTEM

Subject Categories : Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE