Download or read book Refinement and Validation of a Three dimensional Head spine Model Final Report written by Ted Belytschko and published by . This book was released on 1978 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Refinement and Validation of a Three Dimensional Head Spine Model written by and published by . This book was released on 1978 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: A three dimensional discrete model of human spine, torso and head has been refined and validated by comparison with available experimental results. The model consists of a system of rigid bodies, representing the head, vertebrae, and ribs, interconnected by deformable elements which represent the intervertebral discs, ligaments, and other connective tissues. Four models of varying orders of complexity have been developed, ranging from a complex model to a very simplified model with 32 degrees of freedom. The simplified model is able to closely reproduce many of the response characteristics of the more complex models in G sub z loadings, and, because of its simplicity and short running time, may be well suited for design use. Experimental results for human subjects suitable for validation of models are primarily available in the form of impedance curves for vertical harmonic excitation so techniques were developed which efficiently obtain impedance curves for the model. Comparisons of the impedance curves show good agreement, both in the magnitudes and locations of peaks. Furthermore, it was shown that the primary peaks in the impedance curve in the 5 to 7 Hz range result from a combination of buttock-seat resonance, the flexural response of the spine and visceral resonance. Analogous head-spine models were developed for the chimpanzee, baboon, and rhesus monkey. The objective of this development was to provide a scaling methodology for dynamic response and injury data among these non-human primates and man. Impedance curves are presented for these models and show significant differences in character from that of the human spine models.
Download or read book A Model for Analytic Investigation of Three dimensional Head spine Dynamics Final Report written by Ted Belytschko and published by . This book was released on 1976 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Head spine Structure Modeling written by Ted Belytschko and published by . This book was released on 1985 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: SAM (for Structural Analysis of Man) is a three-dimensional discrete element mathematical model developed for the prediction of the dynamic response of the head-spine-torso structure to severe impact environments. The model mathematically describes the equations of motion for a system of rigid bodies representing, for example, the head, torso segments and the pelvis, interconnected by deformable elements representing, for example, the intervertebral discs, ligaments and other connective tissues. SAM consists of two distinct components; a general purpose, large displacement, dynamic structural analysis program and a data base containing a number of data sets each which contains material, geometric and inertial property, connectivity and loading environment data. This report describes: the development of a model of the diaphragm which, when incorporated into the HSM, will significantly enhance its ability to replicate the effects of the secondary +Gz loading path through the viscera-abdominal wall/diaphragm/rib-cage system; a discussion of spinal injuries associated with pilot ejection and proposed injury criteria for the cervical spine; an axisymmetric finite element analysis of a lumbar vertebral body with comparisons to other models and specific attention to the question of material distribution effects on stresses; and frontal ( -Gx) and lateral (+Gy) impact simulations using the recently developed Head-Cervical Spine Model and comparisons of simulation results with experimental data.
Download or read book Impedance of a Three dimensional Head spine Model written by Eberhart Privitzer and published by . This book was released on 1980 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Head spine Structure Modeling Enhancements to Secondary Loading Path Model and Validation of Head cervical Spine Model Final Report written by Ted Belytschko and published by . This book was released on 1985 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aircrew Ejection Injury Analysis and Trauma Assessment Criteria written by Bruce M. Bowman and published by . This book was released on 1993 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomedical Engineering 2 Recent Developments written by C. William Hall and published by Elsevier. This book was released on 2014-05-17 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomedical Engineering II: Recent Developments covers some progress made in biochemical engineering, which have some useful application in dentistry, medical instrumentation, and orthopedics. The book provides a detailed testing and analysis of the use of hydroxylapatite as an effective substance for mandibular augmentation of the atrophic ridge. An in-depth report about the technique called the tendon reroute surgery is also given. The book includes a discussion on cardiology hemodynamics, which is about the determination of blood flow by monitoring the speed of blood cell. Another topic covered is the effects of stresses on the vertebral body. A separate section of the book is focused on the modeling and creation of simulation to test the movement of transmicrovascular fluid and protein exchanges. Some topics in the field of bioelectricity, biomechanics, and biocontrol systems are thoroughly discussed. The text will be a useful tool for dentists, orthopedics, doctors, and people in the field of medical physiology.
Download or read book Muscle Forces and Spinal Loads in the Human Neck written by Hyeonki Choi and published by . This book was released on 1996 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Critical Reviews in Biomedical Engineering written by and published by . This book was released on 1987 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Medicine and Biology written by and published by . This book was released on 1983 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Rehabilitation Research and Development written by and published by . This book was released on 1983 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1979 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
