THE DYNAMIC RESPONSE TO WHOLE BODY SINUSOIDAL VIBRATION OF A VERTEBRATE HEART,
Abstract
The purpose of this study was the determination of a transfer function to describe response of a dog's heart to longitudinal whole body sinusoidal vibration. Miniature accelerometers were surgically implanted on four dogs. Electrical-mechanical network analogies were used to determine velocity transmissibility response in the vibration range below 13 cycles per second (cps) at double displacements up to 1/4 inch. Undamped natural frequency of the heart was 5.16 cps; damping ratio was 0.5. Resting heart acceleration could be added to typical dead heart response data to predict output acceleration wave forms. The second mass, with an undamped natural frequency of 7.8 cps, exhibited a damping ratio of 0.1. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1963
- Accession Number
- AD0421430
Entities
People
- Gerald John Budridge
Organizations
- Air Force Institute of Technology