摘要
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。
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,bull 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.
出处
《江苏科技大学学报(自然科学版)》
CAS
北大核心
2008年第2期56-59,86,共5页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
国家自然科学基金项目(10772072)
江苏省高校自然科学基础研究资助项目(06KJB130027)
关键词
拖曳线列阵
隔振模块
隔振量
流固耦合
有限元
towed array sonar
vibration isolation modules
vibration level difference
fluid-structure coupling
finite element