Shock Trial Simulation for Naval Ships
نویسنده
چکیده
Current Navy implementation of statutory requirements for naval surface combatants dictates the performance of a ship shock trial in order to determine the vulnerability of a ship to an underwater explosion (UNDEX) non-contact shock threat environment. The shock trial features a series of shots, typically three to four, at increasing levels of severity culminating in a two-thirds ship design level shock. The intensity is limited to two-thirds design primarily for crew safety considerations. Velocity and acceleration response data collected during the shock trial is then extrapolated to full design level and compared to equipment shock qualification levels in order to predict equipment performance. Over the past 20 years, five whole-ship shock trials have been conducted on AEGIS ships: CG 48, CG 53, CG 62 (limited), DDG 53 and most recently on DDG 81. Although the lessons learned from these shock trials have been invaluable, we have now reached a level of diminishing returns (Shin and Schneider 2003). Furthermore, today’s battlefield threat scenario has changed dramatically from that which formed the basis for the existing LFT&E shock trial requirement. In view of this, and given the significant costs and the environmental considerations associated with conducting shock trials, the time is ripe for a new approach. The computer modeling and simulation process presented herein has been shown to be a multifaceted and cost-effective predictive tool with the potential of changing the existing paradigm in ship shock trial program.
منابع مشابه
A novel fuzzy multi-criteria decision-making methodology based upon the spherical fuzzy sets with a real case study
The choice of roll stabilization system is critical for many types of ships. For warships where operational activities are fast and the concept of time is very effective, determining the most appropriate of these systems is of particular importance. Some operations, such as the landing of the helicopter on board, are critical for naval ships. Unwanted rolling motion makes this difficult. In add...
متن کاملDesign Aspects of Survivability of Surface Naval and Merchant Ships
The paper addresses various design aspects of survivability for surface naval and merchant ships through a common rational probabilistic methodology. It is based on earlier work of Kurt Wendel on a probabilistic approach to the damage stability of surface ships. This method was adopted by SOLAS 1974 through Res. A.265 (VIII) as an alternative to the deterministic SOLAS criteria for passenger sh...
متن کاملMechanical Properties of Epoxy Resin – Fly Ash Composite
There has been significant increase in use of glass fibre reinforced composites as structural materials in naval mine countermeasure surface ships. Sea mines when detonated emit underwater shock waves, which could impart severe loading to naval ship structure; there are attempts to model the response of a ship structure to this loading. For the model to be accurate & useful material property da...
متن کاملOptimizing the US Navy’s Combat Logistics Force
We study how changes to the composition and employment of the US Navy combat logistic force (CLF) influence our ability to supply our navy worldwide. The CLF consists of about 30 special transport ships that carry ship and aircraft fuel, ordnance, dry stores, and food, and deliver these to client combatant ships underway, making it possible for our naval forces to operate at sea for extended pe...
متن کامل