Scaling for Shock Response of Equipment in Different Submarines
Abstract
This report presents scaling rules developed to predict the response of submarine equipment subjected to underwater chemical explosions. The computer was used as a surrogate for shock tests by employing the University of Maryland HULL code. A simplified model of a hull section was used to contain a frame- mounted single-degree of freedom equipment. A general scaling rule has been developed to handle the spread in the shock response attributable to the charge size, equipment weight, and equipment frequency. In this report the shock response is considered to be the absolute maximum acceleration of the equipment mass as a function of the shock factor (square root of the energy flux density) for a given charge weight. The report also examines those cases where a new hull is derived from an original hull by the linear scaling law. The solution of the shock response is well known when the internal equipment has also been linearly scaled. A new general scaling rule is developed for those cases when the equipment is not linearly scaled, i.e., the equipment and charge weight used in the original hull remains unchanged when installed in the linearly-scaled hull or a completely different equipment and charge weight are used with the new hull.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1992
- Accession Number
- ADA259211
Entities
People
- George J. O'hara
- Patrick F. Cunniff
Organizations
- University of Maryland