摘要
本文旨在提高双钢轮压路机动力舱的隔声性能,针对特定频段内的噪声问题,提出了改进方案。采用间接边界元法对动力舱通风结构进行了仿真,设计了新型的双层通风结构,有效提高了目标频段内的隔声性能。对于消音器通过有限元法和遗传算法优化其结构,实现了在低频范围内的传递损失提升,同时略微降低了高频范围的传递损失。优化后的消声器结构简化,且保留的吸声材料腔室有助于提升高频消声性能。研究结果表明,综合优化策略能够有效改善动力舱的整体隔声效果,为压路机噪声控制提供了科学依据。
This article aims to enhance the sound insulation performance of the power compartment of a double-drum compactor,addressing noise issues within specific frequency bands through proposed improvement measures.Utilizing the indirect boundary element method,simulations were conducted on the ventilation structure of the power compartment,leading to the design of a novel double-layer ventilation structure that effectively improves sound insulation within the target frequency range.Additionally,the muffler's structure was optimized using finite element analysis and genetic algorithms,resulting in increased transmission loss in the low-frequency range while slightly reducing transmission loss in the high-frequency range.The optimized muffler features a simplified structure and retains a sound absorption material chamber that enhances high-frequency sound attenuation performance.The research findings indicate that the comprehensive optimization strategy effectively improves the overall sound insulation effect of the power compartment,providing scientific evidence for noise control in compactor operations.
作者
杜斌
Du Bin(Sany Heavy Industry Co.,Ltd.,Changsha,Hunan,China,410000)
出处
《仪器仪表用户》
2024年第4期66-68,71,共4页
Instrumentation
关键词
双钢轮压路机
动力舱
隔声性能
消音器优化
double-drum compactor
power compartment
sound insulation performance
muffler optimization
