Experimental study on durability fracture behavior and vibration modal sweep for vehicle rear axle  被引量:1

Experimental study on durability fracture behavior and vibration modal sweep for vehicle rear axle

在线阅读下载全文

作  者:门玉琢 于海波 霍娜 

机构地区:[1]School of Mechatronics Engineering, Changchun Institute of Technology [2]China FAW Company Limited R&D Center

出  处:《Journal of Beijing Institute of Technology》2013年第2期207-212,共6页北京理工大学学报(英文版)

基  金:Supported by the National Natural Science Foundation of China( 51008034 );Development Plan Project of Jilin Provincial Science and Technology Department ( 201201135);Chunmiao Foundation of Jilin Provincial Education Department( 2013299)

摘  要:In order to study the fatigue fracture behavior of the rear axle of certain China-made car, the strain loading spectrum near the rear axle fracture location is collected, the modified Neuber rule and the cyclic stress-strain hysteresis loop curve equation are used to convert the nominal strain his- tory into the local stress-strain response. The impact of mean stress on fatigue damage is corrected according to the Manson-Coffin model, and programming calculation of the fatigue damage of the fracture crack is conducted in the INFIELD software, the electromagnetic vibrators are used to sweep the vibration modal frequencies of the rear axle and car body. The enhancement test and fre- quency sweep results show that the rear axle fatigue damage mainly concentrates on the washboard road, and when the forced vibration excitation frequency is 24. 07 Hz, the vibration modal frequency of the rear axle is close to the excitation frequency of the washboard road, leading to resonance and making the rear axle subjected to large strain and fatigue damage, and then vibration fatigue fracture due to high stress concentration.In order to study the fatigue fracture behavior of the rear axle of certain China-made car, the strain loading spectrum near the rear axle fracture location is collected, the modified Neuber rule and the cyclic stress-strain hysteresis loop curve equation are used to convert the nominal strain his- tory into the local stress-strain response. The impact of mean stress on fatigue damage is corrected according to the Manson-Coffin model, and programming calculation of the fatigue damage of the fracture crack is conducted in the INFIELD software, the electromagnetic vibrators are used to sweep the vibration modal frequencies of the rear axle and car body. The enhancement test and fre- quency sweep results show that the rear axle fatigue damage mainly concentrates on the washboard road, and when the forced vibration excitation frequency is 24. 07 Hz, the vibration modal frequency of the rear axle is close to the excitation frequency of the washboard road, leading to resonance and making the rear axle subjected to large strain and fatigue damage, and then vibration fatigue fracture due to high stress concentration.

关 键 词:fatigue damage durability fracture vibration sweep loading spectrum forced vibra- tion 

分 类 号:U463.218.5[机械工程—车辆工程] U467[交通运输工程—载运工具运用工程]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象