Abstract The microperforated compressed porous metal panel (MCPMP) absorber was proposed to develop novel sound absorber with excellent sound absorption performance, fewer utilized materials, and more lightweight. Through treating the compressed porous metal with high compression ratio as microperforated panel, theoretical sound absorption model of the MCPMP absorber was constructed through equivalent circuit approach. Structural parameters of the MCPMP absorber were optimized by cuckoo search algorithm for different target frequency range. The obtained optimal MCPMP absorbers were verified by finite element simulation and validated through standing wave tube measurement. Consistencies among the theoretical data, simulation data, and experimental data proved feasibility and accuracy of theoretical sound absorption model, cuckoo search optimization algorithm, and finite element simulation method. Actual average sound absorption coefficients of the optimal MCPMP absorbers with limited total thickness of 20 mm were 0.4679, 0.7069, and 0.7299 when the target frequency ranges were 100–2000 Hz, 100–4000 Hz, and 100–6000 Hz respectively. By comparison with sound absorption performance of the original porous metal and those of the 10-layer gradient compressed porous metal, effectiveness and practicality of the optimal MCPMP absorber was proved. The developed MCPMP absorber was favorable to enrich the sound absorption theory and promote its practical application.

中文翻译：

---

微穿孔压缩多孔金属板吸声器吸声系数建模与优化

摘要 微穿孔压缩多孔金属板（MCPMP）吸声体旨在开发具有优良吸声性能、使用材料少、重量更轻的新型吸声体。将高压缩比的压缩多孔金属作为微穿孔板，通过等效电路法构建了MCPMP吸声体的理论吸声模型。针对不同的目标频率范围，通过布谷鸟搜索算法优化了MCPMP吸波器的结构参数。得到的最优MCPMP吸收体通过有限元模拟验证，并通过驻波管测量进行验证。理论数据、仿真数据和实验数据的一致性证明了理论吸声模型的可行性和准确性，布谷鸟搜索优化算法和有限元仿真方法。当目标频率范围分别为 100-2000 Hz、100-4000 Hz 和 100-6000 Hz 时，具有 20 mm 限制总厚度的最佳 MCPMP 吸声器的实际平均吸声系数分别为 0.4679、0.7069 和 0.7299。通过与原始多孔金属和10层梯度压缩多孔金属的吸声性能对比，证明了优化MCPMP吸声体的有效性和实用性。研制的MCPMP吸声体有利于丰富吸声理论，促进其实际应用。7299 当目标频率范围分别为 100-2000 Hz、100-4000 Hz 和 100-6000 Hz 时。通过与原始多孔金属和10层梯度压缩多孔金属的吸声性能对比，证明了优化MCPMP吸声体的有效性和实用性。研制的MCPMP吸声体有利于丰富吸声理论，促进其实际应用。7299 当目标频率范围分别为 100-2000 Hz、100-4000 Hz 和 100-6000 Hz 时。通过与原始多孔金属和10层梯度压缩多孔金属的吸声性能对比，证明了优化MCPMP吸声体的有效性和实用性。研制的MCPMP吸声体有利于丰富吸声理论，促进其实际应用。