非对称传动系统主轴断裂机理分析与结构优化研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (18) : 104-112.

论文

崔庭琼1，李以农1，张运涛1，张志达1，罗法氿1，王成2

作者信息 +

Fracture mechanism and structure optimization of the main shaft of an asymmetric transmission system

CUI Tingqiong1，LI Yinong1，ZHANG Yuntao1，ZHANG Zhida1，LUO Fajiu1，WANG Cheng2

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文章历史 +

摘要

针对某特种车辆传动主轴在起步工况下发生断裂失效问题，综合考虑传动主轴系统内外多源激励，采用集中质量法建立系统非线性动力学模型，利用Runge-Kutta数值法求解起步工况下主轴动载荷的时域和频域响应，并分析了主轴右侧断裂的主要原因。针对主轴断裂原因，采用NSGA-II算法，以主轴的扭转动载荷为优化目标，对主轴结构参数进行了多目标优化，并利用模糊集合理论对优化得到的Pareto最优解集进行选优。优化结果表明，优化后传动主轴在起步工况下的扭转振动响应能很快收敛，左右两端扭转动载荷均方根值分别减小了34.49%和53.81%，优化效果明显。
关键词: 传动主轴；断裂机理；多目标优化；遗传算法

Abstract

In view of the fracture failure of the transmission spindle of a special vehicle under starting condition, considering the internal and external multi-source excitation of the main shaft bearing system, the nonlinear dynamic model of the system is established by using the lumped mass method, and the Runge Kutta method is used to solve the problem. The time-domain and frequency-domain response of the system vibration dynamic load under the starting condition and the main reason of the fracture of the right side of the spindle are obtained. Aiming at the fracture reason of the spindle, the NSGA-II algorithm is used to optimize the structural parameters of the transmission spindle with the vibration dynamic load of the system as the optimization objective, and the Pareto optimal solution set obtained from the optimization is optimized by using the fuzzy set theory. The optimization results show that the torsional vibration response of the optimized transmission spindle can converge quickly under the starting condition, and the root mean square value of the torsional dynamic load at the left and right ends is reduced by 34.49% and 53.81% respectively, and the optimization effect is obvious. 
Key words: transmission spindle; fracture mechanism; multi-objective optimization; genetic algorithm

导出引用

崔庭琼1，李以农1，张运涛1，张志达1，罗法氿1，王成2. 非对称传动系统主轴断裂机理分析与结构优化研究[J]. 振动与冲击, 2022, 41(18): 104-112

CUI Tingqiong1，LI Yinong1，ZHANG Yuntao1，ZHANG Zhida1，LUO Fajiu1，WANG Cheng2. Fracture mechanism and structure optimization of the main shaft of an asymmetric transmission system[J]. Journal of Vibration and Shock, 2022, 41(18): 104-112

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