| 非对称载荷下驱动轴强度与刚度的匹配与优化 |
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| 引用本文： | 王佳羽,郑松林,赵礼辉,冯金芝.非对称载荷下驱动轴强度与刚度的匹配与优化[J].上海理工大学学报,2018,40(5):449-454. |
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| 作者姓名： | 王佳羽 郑松林 赵礼辉 冯金芝 |
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| 作者单位： | 上海理工大学 机械工程学院, 上海 200093,上海理工大学 机械工程学院, 上海 200093;上海理工大学 机械工业汽车底盘机械零部件强度与可靠性评价重点实验室, 上海 200093,上海理工大学 机械工程学院, 上海 200093;上海理工大学 机械工业汽车底盘机械零部件强度与可靠性评价重点实验室, 上海 200093,上海理工大学 机械工程学院, 上海 200093;上海理工大学 机械工业汽车底盘机械零部件强度与可靠性评价重点实验室, 上海 200093 |
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| 基金项目： | 国家自然科学基金资助项目（51375313）；上海市科委基础重点项目（13JC1408500） |
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| 摘 要： | 为了解决某重载车辆的驱动轴容易发生早期失效的问题,提出了一种在非对称载荷作用下实现结构强度与刚度合理匹配的分段优化设计方法。通过分析非对称承载驱动轴的刚度对载荷分布的影响,建立了以结构强度和疲劳寿命为约束、驱动轴花键的应变相等为目标的驱动轴结构设计优化模型。优化设计结果表明,危险部位右侧花键齿根应力降低了90.3 MPa,驱动轴两侧扭矩分配更合理,且使用寿命提高了72.2%。
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| 关 键 词： | 疲劳失效 驱动轴 非对称承载 强度刚度匹配 |
| 收稿时间： | 2017/11/7 0:00:00 |
Matching and Optimization of the Strength and Stiffness of a Driven Axle Under Asymmetrical Load |
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| WANG Jiayu,ZHENG Songlin,ZHAO Lihui and FENG Jinzhi.Matching and Optimization of the Strength and Stiffness of a Driven Axle Under Asymmetrical Load[J].Journal of University of Shanghai For Science and Technology,2018,40(5):449-454. |
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| Authors: | WANG Jiayu ZHENG Songlin ZHAO Lihui and FENG Jinzhi |
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| Institution: | School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Machinery Industry Key Laboratory for Mechanical Strength & Reliability Evaluation of Auto Chassis Components, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Machinery Industry Key Laboratory for Mechanical Strength & Reliability Evaluation of Auto Chassis Components, University of Shanghai for Science and Technology, Shanghai 200093, China and School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Machinery Industry Key Laboratory for Mechanical Strength & Reliability Evaluation of Auto Chassis Components, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | An optimization method for the strength and stiffness matching of a driven axle under asymmetrical loading was proposed to solve the problem of early stage failures in a heavy vehicle. The influence of stiffness of the driven axle on the load distribution was analyzed. On these bases, the optimization on the structure was carried out with the structural strength and fatigue life as constraints and the balanced strain of the splines as an objective. The results of FEA (finite element analysis) on the modified driven axle indicate that the stress at the critical part is significantly reduced by 90.3 MPa. Additionally, the torque distribution of the driven axle is more reasonable and the service life is improved by 72.2%. |
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| Keywords: | fatigue failure driven axle asymmetrical load strength and stiffness matching |
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