Experimental investigation into the dynamic response of two DOF tuned deck simulator for shock qualification of shipboard systems
Flynn, Timothy V.
Shin, Young S.
MetadataShow full item record
The explosive shock created by the underwater explosion of a mine or torpedo in close proximity to a surface ship can severely threaten the combat capability and survivability of the ship. MEL-S-901D specifics the shock test procedures and acceptance criteria for all shipboard systems that must resist high impact mechanical shock. While the U.S. Navy's Medium-weight Shock Machine with its standard equipment mounting fixture can subject a combat systems component to more severe shock excitations than experienced in actual ship shock trials, it cannot simulate the lower frequency excitations typically transmitted through a ship's superstructure during shock trials that expose equipment to catastrophic resonant vibration. This study is an experimental investigation into the dynamic response of the recently built Two Degree-of-Freedom (2DOF) tuned Deck Simulator (TDS) for the Medium-weight Shock Machine (MWSM) to evaluate its potential role in the pre-acceptance shock qualification of new shipboard combat systems equipment. Upon completion of final characterization testing, the 2DOF-TDS could be integrated into the medium-weight shock qualification procedures of MIL-S-901D. This improvement could significantly enhance the capacity of a warship to absorb damage and still maintain its mission integrity.