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首页> 外文期刊>Journal of Aircraft >Design Minimization of Noise in Stiffened Cylinders Due to Tonal External Excitation
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Design Minimization of Noise in Stiffened Cylinders Due to Tonal External Excitation

机译:设计使由音调外部激励引起的加硬气缸中的噪声最小化

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A computational design tool was developed to perform a constrained optimization of the acoustic environment within a vibrating cylinder, incorporating finite element and boundary element methods. The tool comprises a UNIX shell script that coordinates an iterative design optimization process integrating a number of programs, the Key components of which are MSC/NASTRAN for structural analyses, COMET/Acoustics for acoustic analyses, And CONMIN for nonlinear optimization. In addition to the structure and implementation of the tool, this paper Present the results of a number of trials of the tool applied to stiffened and unstiffened cylinders, considering Different formulations of the objective function to e optimized, and for a constant frequency exterior monopole Excitation.
机译:开发了一种计算设计工具,以结合有限元和边界元方法对振动圆柱体内的声学环境进行约束优化。该工具包含一个UNIX shell脚本,该脚本协调一个迭代设计优化过程,该过程集成了许多程序,其关键组件是用于结构分析的MSC / NASTRAN,用于声学分析的COMET / Acoustics和用于非线性优化的CONMIN。除了该工具的结构和实现之外,本文还介绍了该工具应用于加筋和未加筋圆柱体的大量试验结果,其中考虑了目标函数的不同公式以进行优化,并针对恒定频率的外部单极励磁。

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