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随着潜艇设备用电需求的提升,电力电缆的大量使用为艇内空间布置和施工带来了极大的不便.鉴于此,基于管母线与管路间的共性,从敷设自由阻尼层、增加连接部位界面阻抗失配度的角度对管母线进行了动力性能分析,分析了不同振动模态形式下的能耗.针对一种典型软连接形式,分析了包覆阻尼材料、采用黏弹夹层连接对管母线振动能量的吸收、阻隔效果;探究了内外侧绝缘阻尼层不同模量、损耗因子及厚度对管母线振动性能的影响.结果表明:该抑振设计工况可使管母线的中跨段加速度总振级降低25dB;降低内外侧绝缘阻尼层模量、增大内外侧绝缘层材料损耗因子以及分别增大外绝缘层厚度、减小内侧绝缘层厚度可以有效抑振,为母线槽振动噪声控制提供了设计支撑.
With the improvement of the demand for submarine equipment, the extensive use of power cables has brought great inconvenience to the space layout and construction of the ship.In view of this, based on the commonality between the busbar and the pipeline, from the laying of a free damping layer to increase The dynamic performance of the tube busbar is analyzed from the perspective of the impedance mismatch between the interfaces and the energy consumption under different vibration modalities is analyzed. Aiming at a typical soft connection form, the coating damping material is analyzed and the viscoelastic interlayer connection The influence of different modulus, dissipation factor and thickness of the inner and outer insulation damping layers on the vibration performance of the tube busbar was investigated. The results show that the vibration suppression design conditions can make the midspan of the tube busbar Reducing the total vibration acceleration of the segment acceleration by 25dB; reducing the modulus of the inner and outer insulation damping layers, increasing the material loss factor of the inner and outer insulation layers, respectively increasing the thickness of the outer insulation layer and reducing the thickness of the inner insulation layer, Noise control provides design support.