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Mathematical model of a head subjected to an angular acceleration.
J Biomech 1973 Sep; 6(5):487-495
A mathematical model of the head is constructed to examine the shear strains developed in the brain, considering the brain as a spherical viscoelastic medium attached to the inside of a rigid spherical shell. The mechanical wave motion generated in the brain when the head is subjected to an angular acceleration of a particular amplitude and duration is calculated and compared with experimental data for monkeys, showing that the threshold of angular acceleration necessary to cause concussion varies with the duration of the acceleration as predicted by the model. Data are given for shear strain and angular acceleration necessary for causing concussion.
NIOSH-Publication; NIOSH-Grant; Biomechanics; Physiological-effects; Head-injuries; Physical-properties; Consciousness-loss; Mechanical-properties; Shear-modulus; Neuromuscular-disorders; Stress-strain; Shear-stress; Musculoskeletal-system-disorders; Analytical-methods; Elastic-properties; Accident-analysis
Applied Mathematics, Stanford Research Institute, 333 Ravenswood Ave., Menlo Park, California 94025
Issue of Publication
Journal of Biomechanics
Stanford Research Institute, Menlo Park, California
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division