论文部分内容阅读
从鱼雷机械噪声的理论分析出发,在有限元与边界元分析的基础上,结合噪声振动的能量与声辐射效率,建立了鱼雷动力机械的水下噪声预报模型,据此研究了鱼雷机械噪声的辐射特性、不同频率时的指向特性以及鱼雷壳体结构的水下声辐射效率;通过实例,探讨了鱼雷动力机械水下噪声的预报方法。
Based on the theoretical analysis of the mechanical noise of the torpedo, based on the finite element analysis and the boundary element analysis, the underwater noise prediction model of the torpedo mechanical equipment is established based on the energy of the vibration and sound radiation efficiency. Based on this, the mechanical noise of the torpedo Radiation characteristics, directional characteristics at different frequencies and the underwater acoustic radiation efficiency of the torpedo shell structure; and by examples, the prediction method of the underwater noise of the torpedo power machinery is discussed.