子结构法在齿轮-箱体-基座耦合系统辐射噪声仿真中的应用研究
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摘要
为了提高齿轮-箱体-基座耦合系统辐射噪声分析的计算效率,采用子结构法提取基座在与箱体各连接点处的等效质量和等效刚度,并用质量单元和弹簧单元对基座进行等效。在此基础上建立齿轮-箱体-基座耦合系统的辐射噪声分析模型,完成辐射噪声分析,并与全有限元/边界元法的分析结果进行对比。结果表明:采用子结构法分析获得的耦合系统在各场点处的有效声压级与全有限元/边界元法分析结果间的差距均未超过4.5 dB,而该方法的分析时间仅为全有限元/边界元法的32.7%。
In order to raise the efficiency of the radiation noise simulation of gear-box-base coupling systems, the equivalent mass and stiffness at each connection point of the base are extracted using substructure method, and the base is discretized by mass elements and spring elements. On this basis, the radiation noise simulation model of the gear-box-base coupling system is established and the radiation noise simulation is completed. The simulation results are compared with those by using the full finite element/boundary element method. The results show the difference between the equivalent sound pressure level at each field point obtained by using the proposed method and that obtained by using the full finite element/boundary element method is less than 4.5 dB, and the simulation time consuming of the proposed method only accounts for 32.7 % of that of the full finite element/boundary element method.
In order to raise the efficiency of the radiation noise simulation of gear-box-base coupling systems, the equivalent mass and stiffness at each connection point of the base are extracted using substructure method, and the base is discretized by mass elements and spring elements. On this basis, the radiation noise simulation model of the gear-box-base coupling system is established and the radiation noise simulation is completed. The simulation results are compared with those by using the full finite element/boundary element method. The results show the difference between the equivalent sound pressure level at each field point obtained by using the proposed method and that obtained by using the full finite element/boundary element method is less than 4.5 dB, and the simulation time consuming of the proposed method only accounts for 32.7 % of that of the full finite element/boundary element method.
引文
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[7]张忠,韩丽,任方,等.动态子结构法在全箭动特性分析中的应用研究[J].载人航天,2014,20(3):209-213.
[8] SCHENCK HA. Improved integral formulation for acoustic radiation problems[J]. Journal of the Acoustical Society of America, 1968, 44(1):41-58.
[9]常乐浩.平行轴齿轮传动系统动力学通用建模方法与动态激励影响规律研究[D].西安:西北工业大学,2014.
[2]周建星,刘更,马尚君.内激励作用下齿轮箱动态响应与振动噪声分析[J].振动与冲击,2011,30(6):234-238.
[3] GUO Y, ERITENEL T, ERICSON TM, et al. Vibroacoustic propagation of gear dynamics in a gear-bearinghousing system[J]. Journal of Sound and Vibration,2014, 333(22):5762-5785.
[4]柴国栋,王顺慧,柴国强.基于子结构法的电子设备模态分析[J].机械强度,2015,37(4):790-792.
[5]王雪仁,贾地,缪旭弘.大型复杂结构振动特性分析方法研究[J].船舶力学,2012,16(4):390-398.
[6]陈冬冬,左言言.地铁铝合金车体动态特性动态子结构分析方法[J].噪声与振动控制,2012,32(2):71-74.
[7]张忠,韩丽,任方,等.动态子结构法在全箭动特性分析中的应用研究[J].载人航天,2014,20(3):209-213.
[8] SCHENCK HA. Improved integral formulation for acoustic radiation problems[J]. Journal of the Acoustical Society of America, 1968, 44(1):41-58.
[9]常乐浩.平行轴齿轮传动系统动力学通用建模方法与动态激励影响规律研究[D].西安:西北工业大学,2014.