| 刘博,翟师慧,盛鹏.内埋式带弹武器舱声振耦合响应的仿真分析[J].装备环境工程,2025,22(5):66-74. LIU Bo,ZHAI Shihui,SHENG Peng.Simulation of Acoustic-vibration Coupling Response of Embedded Weapon Bays with Missiles[J].Equipment Environmental Engineering,2025,22(5):66-74. |
| 内埋式带弹武器舱声振耦合响应的仿真分析 |
| Simulation of Acoustic-vibration Coupling Response of Embedded Weapon Bays with Missiles |
| 投稿时间：2025-02-20 修订日期：2025-03-24 |
| DOI：10.7643/issn.1672-9242.2025.05.010 |
| 中文关键词: 内埋式武器舱 气动声学特性 声振耦合 周期性旋涡碰撞 降噪设计 振动响应中图分类号:V416.1 文献标志码:A 文章编号:1672-9242(2025)05-0066-09 |
| 英文关键词:embedded weapon bay aero-acoustic characteristics acoustic-vibration coupling periodic vortex collision noise reduction design vibration response |
| 基金项目:国家自然科学基金(12472343) |
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| 中文摘要: |
| 目的 预测内埋式带弹武器舱的气动声学特性，明确其声源分布与振动响应规律，为飞行器安全发射与降噪设计提供理论依据。方法 基于声振耦合理论，联合有限元法(Finite Element Analysis，FEA)与统计能量法(Statistical Energy Analysis，SEA)，采用Möhring声类比方法识别噪声源。利用ACTRAN软件模拟不同马赫数(0.5~1.95 Ma)下的舱体声压级分布，结合VA One软件分析舱体振动响应特性，并通过美国空军试验数据验证模型的有效性。结果 武器舱总声压级随马赫数的增大呈先上升、后下降的趋势，峰值声压集中于舱内前缘、后缘及尾部区域。尾部子系统因周期性旋涡碰撞产生显著振动响应。仿真结果与试验数据对比，误差小于6 dB，验证了联合方法的有效性。结论 内埋式武器舱气动噪声与旋涡运动强相关，尾部周期性旋涡碰撞是诱发振动的主因。声振耦合联合仿真方法可精准预测舱体声学特性，为优化武器舱结构布局与降噪设计提供了关键技术支撑。 |
| 英文摘要: |
| The work aims to predict the aero-acoustic characteristics of embedded weapon bays with missiles, clarify the noise source distribution and vibration response mechanisms, and provide theoretical guidance for safe aircraft launch and noise reduction design. Based on the acoustic-vibration coupling theory, a hybrid approach combining Finite Element Analysis (FEA) and Statistical Energy Analysis (SEA) was developed. The Möhring acoustic analogy method was employed to identify noise sources. ACTRAN was used to simulate sound pressure level distributions under varying Mach numbers (0.5-1.95 Ma), while VA One was combined to analyze vibration response characteristics. The validity of the model was verified with U.S. Air Force experimental data.The total sound pressure level in the weapon bay initially increased and then decreased with the rising Mach numbers, with the peak pressure concentrated at the leading edge, trailing edge, and tail regions. The tail subsystem exhibited significant vibration responses due to periodic vortex collisions. Simulation results showed less than 6 dB deviation from experimental data, confirming the reliability of the hybrid method. The aero-acoustic noise in embedded weapon bays is strongly governed by vortex dynamics, where periodic tail vortex collisions dominate vibration excitation. The acoustic-vibration coupling hybrid simulation method enables precise characterization of acoustic characteristics in bays, offering critical insights for optimizing weapon bay configurations and noise reduction design. |
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