Investigation of the Effect of the Deck Simulator on the Shock Spectrum of Floating Shock Platform

The investigation of the effect of the deck simulator on the shock spectrum of floating shock platform is conducted in this paper. Generally, the impact assessment tests of large-medium sized shipboard equipment are conducted on the floating shock platform. The structural form of the floating shock platform is similar to the barge’s structural form, with a strong double bottom which can ensure the safety of the bottom structure under the underwater explosion load. The tested equipment is fixed on the inner bottom plating as same as it is fixed on the real ship. It is obvious that there is a huge structural difference between floating shock platform and the real ship. The response of the real ship under explosion load is flexible-body motion, while the main response of the floating shock platform is rigid-body motion[1]. The deck can be regarded as a filter acting on the shock environment which can cause difference between the shock environments of ship and floating shock platform[2]. To decrease the shock environment difference, a special deck which is called deck simulator here is design. Through the numerical simulation and analysis, the FSP with a deck simulator can decrease the shock environment difference and can be used to test equipment with special mounting frequency demand. These conclusions have a certain guiding significance for the assessment of ship equipment in engineering applications.