针对飞机装配制造中螺旋铣孔装备的核心部件内套筒,运用Ansys,开展动态性能分析与优化.通过模态分析,发现一、二阶固有频率均处在加工频率范围内.为减轻质量和避免一阶频率共振,对内套筒进行结构优化设计.优化结果表明:质量降低35.7％,一阶固有频率降低11.9％,脱离加工频率范围.已将优化结果应用在样机制造中,为减轻样机质量,提高样机动态性能提供有力支撑.%Dynamic performance analysis and optimization is carried out with Ansys, for an inner sleeve, the core part of helical milling equipment in aircraft assembly. The first and second order natural frequencies are found in the processing frequency range by modal analysis. Structure optimization design is carried out for the inner sleeve to reduce mass and avoid the first order resonant frequency. The result of the optimization shows that the mass and the first order frequency are reduced by 35. 7% and 11. 9% respectively , and the first order frequency leaves from the processing frequency range. The optimization result has been used in prototype manufacturing, and supplies strong support for reducing prototype mass and improving the dynamic performance.
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