Advanced Development of an Active Neuromusculature Response to Mechanical Stress.
Final rept. 15 Apr 83-31 Oct 84,
PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF INDUSTRIAL AND MANAGEMENT SYSTEMS ENGINEERING
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The objective of this project was to further define and formulate methodologies for implementing active muscle responses into the present ATBArticulated Total Body Mathematical model. An active neuromusculature response to mechanical stress was further developed. The basic mechanisms of muscle contraction at the fiber level, including the length-tension relationship, the force-velocity relationship and the active state function were reexamined. The basic fiber mechanisms were integrated into muscle systems utilizing motor unit organization, orderly recruitment of motor units and adjustments in force due to fatigue. The complete muscle systems were then used to replicate the human neuromusculature of the trunk and neck and for the elbow, shoulder, hip and knee joints. Preliminary simulations were of the human response to high accelerations compared favorably to experimentally obtained values. This muscularized ATB Model will serve as a useful cost effective tool for the study of air crew responses in high-G environments.
- Anatomy and Physiology
- Stress Physiology