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针对某型矿用柴油机曲轴部件,采用APDL语言设计其参数化建模程序。在ANSYS平台上计算出了曲轴的低阶模态频率及振型,并以结构参数为设计变量,建立曲轴优化过程数学模型,通过零阶方法实现了曲轴的轻量化设计。设计结果使曲轴质量减轻了8.1%,降低了机体承受的惯性载荷;同时使第1阶模态频率(基频)提高了6.35 Hz,有效增强了曲轴的抗振能力。通过曲轴轻量化设计,为矿用柴油机系统动态性能改进及其稳定运行提供了技术保障。
Aiming at the crankshaft component of a certain type of mining diesel engine, the APDL language is used to design its parametric modeling program. The low-order modal frequencies and modes of the crankshafts are calculated on the ANSYS platform. The structural parameters are used as design variables to establish the mathematical model of the crankshaft optimization process. The zero-order method is adopted to realize the lightweight design of crankshafts. The design results reduce the mass of the crankshaft by 8.1% and reduce the inertia load on the body. At the same time, the first mode frequency (fundamental frequency) is increased by 6.35 Hz, which effectively enhances the anti-vibration ability of the crankshaft. Through the light weight design of the crankshaft, it provides technical support for the improvement of dynamic performance of the diesel engine system and its stable operation.