舰艇抗冲击试验仿真技术

Ship Shock Trials Simulation Techniques

舰艇抗冲击试验是检验舰艇抗冲击性能的有效方法,仿真技术作为舰艇抗冲击研究手段之一也具有显著特点,可以在仿真环境下对舰艇进行冲击试验。本文概述了国外舰艇抗冲击试验仿真技术发展的现状,结合国内开展的舰艇抗冲击试验介绍了中国舰艇抗冲击试验仿真技术,总结、分析了试验仿真技术特点及存在的不足,并展望了未来试验仿真技术应用。

Shock trials are performed by detonating explosive charges at various locations around the ship and recording the ship response. While shock trials give valuable information on ship response to specific UNDEX threat scenarios, there are several factors that limit the usefulness of the shock trial in the design process of a ship. First, shock trials are extremely expensive and require extensive planning. Secondly, because of cost limitations only the lead ship in a new class or a ship that deviates considerably from other ships in the same class undergoes shock trials. Shock trials are post-design tests. They can not be used early in design before the actual ship is built. Other limitations are the safety issues associated with shock trials. There is a safety risk to the crew of the ship, and a risk of damaging the ship beyond repair or even sinking it. Because of these safety issues shock trials are limited in the size/type of explosions that can be tested. Therefore shock trials only test risk-free UNDEX threat scenarios for the ship, they cannot be used to determine the survivability limits of a ship in a true combat situation .With the simulation development, it is able to creating a virtual shock environment by use of a computer to model the ship structure and the surrounding fluid, and it can provide comparable results with less schedular impact and at a much reduced cost. In this paper, the development of ship shock trials simulation techniques in foreign countries is reviewed; China＇s trials simulation capability is reviewed in conjunction with a shock trial; the shortage and development of trials simulation techniques are analyzed.