基于流固耦合模型的拖曳线列阵隔振模块隔振性能分析

为了进一步提高拖曳式声纳的工作性能,必须在声阵模块前、后插入性能优良的隔振模块。利用ANSYS有限元软件建立了拖曳线列阵隔振模块的流固耦合模型,计算了隔振模块VIM(Vibration Isolation Modules)的隔振性能。计算表明了流体、拉力、护套材料阻尼、护套材料弹性模量等对隔振模块的隔振性能都有一定的影响。模型中应充分考虑流体的作用;隔振效果随拉力的增大而减小,护套材料阻尼和弹性模量对隔振效果的影响均与激励频率有关。对于进一步改进和提高隔振模块性能具有参考价值。

Vibration Isolation Capability Analysis of Vibration Isolation Modules Based on Fluid-structure Coupling Model

In order to reduce and isolate vibration from stern arrays wing and towed cabled shaking,VIM(Vibration Isolation Modules) are incorporated both ahead and astern of acoustic modules.The fluid-structure coupling field model is constructed and calculated by using ANSYS.The calculations show that the fluid,pull,hull damping and elastic modulus all have a certain degree of influence on the isolation capability of VIM.The effect of fluid should be considered adequately in the model.The isolation effect decreases with pull increasing.The effect of hull damping and elastic modulus is related to the excitation frequency.These results and conclusions have reference value in improving the capability of VIM.