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重型牵引车后桥振动疲劳分析及试验研究

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重型牵引车后桥振动疲劳分析及试验研究
Vibration Fatigue Analysis and Experimental Study of Heavy Duty Truck Rear Axle
投稿时间:2016-11-19
DOI:10.15918/j.tbit1001-0645.2018.03.008
中文关键词:冲焊桥铸钢桥虚拟试验台振动疲劳分析台架试验
English Keywords:welded axlecast-steel axlevirtual test bedvibration fatigue analysisbench test
基金项目:国家自然科学基金资助项目(51575232);吉林省科技厅重点攻关项目(20160204018G)
作者单位
张志远吉林大学 交通学院, 吉林, 长春 130022
一汽解放汽车有限公司, 吉林, 长春 130011
刘玉梅吉林大学 交通学院, 吉林, 长春 130022
陈涛一汽解放汽车有限公司, 吉林, 长春 130011
范文峰一汽解放汽车有限公司, 吉林, 长春 130011
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中文摘要:
为提高重型牵引车后桥结构耐久性能,解决冲焊结构后桥推力杆上支架、后盖焊缝、直焊缝等容易发生疲劳破坏等问题,将冲焊桥替换成铸钢桥,通过仿真和试验相结合的方法对比冲焊桥和铸钢桥结构耐久性能指标,建立车桥虚拟实验台,并通过对比试验校核虚拟实验台模型.应用振动疲劳分析方法求解铸钢桥和冲焊桥的疲劳寿命,并用疲劳台架试验验证仿真结果.仿真和试验结果一致,表明铸钢桥壳的疲劳耐久性能要强于冲焊桥壳的疲劳耐久性能,采用铸钢桥的重型牵引车可有效提高结构可靠性.
English Summary:
To improve the durability of heavy tractor rear axle,the durability problem,such as rod-bracket failure,welding line and straight seam-weld crack was focused to be solved.Attempting to replace the welded axle with cast steel axle,several projects were carried out including the durability comparison between cast-steel axle and welded axle,the development of a virtual test platform for vehicle axle,and the virtual-test model examination by contrast experiment.A vibration fatigue analysis method was applied to solve cast-steel axle and welded axle life,and the bench test was taken to verify the simulation result.The simulation and test results identically show that the cast-steel axle is better than welded in fatigue life,the heavy tractor assembled with cast-steel axle can improve its structure reliability effectively.
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