Design and Analysis of a Seismically Stable Platform. An Evaluation
Abstract
This paper analyzes a Technical Report (TR 7015.003) furnished to the 6585th Test Group by Measurement Analysis Corporation, in support of the Seismically Stable Platform project. There are six major conclusions. (1) The proposed passive system is basically sound. An active system should improve transmissibility over the estimates given in the MAC report, (2) Platform rocking modes may be induced by purely translational ground motion, (3) Apparent platform rocking would be seen by mismatched seismometer pairs. It is not clear that seismometers can be matched to monitor small rotations, (4) The 6585th Test Group should further characterize the rotational and translational motions of the test site, (5) In the future, test analysts should be able to separate test item errors from platform-induced motions. By monitoring known events such as airplane overflights and sled runs, the analyst can account for much of the induced vibration, and (6) By band-selectable analysis, the analyst can disregard much of the input vibration. He needs to take into account only those vibrations and rotations that the test item is sensitive to.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1980
- Accession Number
- ADA096530
Entities
People
- Martin G. Jaenke