Shipboard combat systems are subjected to damaging transient forces due to weapons effects such as underwater explosion (UNDEX). In order to improve the UNDEX survivability of combat systems such as the mast/antenna structural system, this project involved with the development and application of modern computational techniques for the prediction of transient response. A class of substructuring methods, known as component mode synthesis, are examined and specialized to the mast/antenna survivability enhancement problem. The computationally efficient and component-based approach of component mode synthesis is consistent with the overall goal of developing a specialized computer-aided design tool for mast/antenna systems.

This project focused on the AN/SPS-67(V)2 and (V)3 antennae. Both finite element modeling and modal testing was performed at the Naval Postgraduate School.

Publications:

Gordis, J. H., Shin, Y. S., and Petersen, L. J., Mast-Antenna Survivability: Structural Dynamic Design Analysis by Component Mode Synthesis. January 1994. Prepared for Naval Sea Systems Command.

Abstract and Introduction

The following Master's theses are also available:

LT Lynn J. Petersen, Mast-Antenna Survivability: Structural Dynamic Design Analysis by Component Mode Synthesis.
Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, March 1994.

LT David L. Wagnon, Dynamic Design Analysis of a Shipboard Antenna Structure Subjected to Underwater Explosions
Thesis (Degree of Mechanical Engineer and M.S. in Mechanical Engineering) Naval Postgraduate School, June 1995.