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过去50年,每一新型舰艇服役前进行海上抗冲击试验考核已成为一种规范,这种在严酷冲击环境条件下的整舰和舰载设备抗冲击能力考核对舰艇人员、设备和舰船本身都存在很大危险,耗时长、成本高、实施难度大。随着计算机处理能力的提高,利用有限元方法对舰船在流体环境中的冲击响应进行建模与仿真计算已成为可能。研究了与实船抗冲击试验测量结果进行对比的DDG-81冲击仿真预报精度,分析了传感器安装位置、衰减以及爆源位置对建模与仿真结果的影响。
In the past 50 years, it has become a norm for the maritime anti-impact test assessment of each new type of vessel before serving. This assessment of the anti-impact capability of the entire ship and the shipborne equipment under harsh environmental conditions exerts great influence on the naval personnel, equipment and the ship itself There are great dangers, time-consuming, high cost, difficult to implement. With the improvement of the computer processing ability, it is possible to use the finite element method to model and simulate the ship’s impact response in the fluid environment. The precision of DDG-81 impact simulation forecasting is compared with that of real ship’s impact test. The influence of sensor installation location, attenuation and explosion location on modeling and simulation results is analyzed.