Position: Home > Articles > Load Spectrum Compiling and Fatigue Life Estimation of the Cutter Shaft of the Whole-straw Recycling Machine
Transactions of the Chinese Society for Agricultural Machinery
2009,40
(3)
83-86
整株秸秆还田机刀轴载荷谱编制与疲劳寿命估算
作 者：
葛宜元;王金武;李世伟;孙文祎
单 位：
中国电子科技集团第49研究所;东北农业大学工程学院
关键词：
整株秸秆还田;刀轴;弯扭载荷谱;复合应力;疲劳寿命
摘 要：
利用DH5937应力测试系统和传感器技术,对刀轴的弯矩和扭矩进行了模拟实测,编制了刀轴弯扭复合载荷谱。通过迈内尔(Miner)线性累积损伤理论推导出刀轴在复合应力作用下的疲劳寿命估算式,并利用刀轴弯扭载荷谱估算出刀轴的疲劳寿命,较设计寿命提高了433 h。
译 名：
Load Spectrum Compiling and Fatigue Life Estimation of the Cutter Shaft of the Whole-straw Recycling Machine
作 者：
Ge Yiyuan1 Wang Jinwu1 Li Shiwei1 Sun Wenyi2(1.Engineering College,Northeast Agricultural University,Harbin 150030,China 2.No.49 Research Institute,China Electronics Technology Group Corporation,Harbin 150001,China)
关键词：
Whole-straw recycling,Cutter shaft,Load spectrum of bending torsion coupling, Combined stresses,Fatigue life
摘 要：
By using the DH5937 stress measurement system and sensor technology,the data of the bending moment and torque of the cutter shaft were simulated and measured,and a combined load spectrum of the bending torsion coupling of the cutter shaft was complied.Meanwhile,an estimated formula of the fatigue life of the cutter shaft bearing combined stresses was deduced by using Miner liner cumulative damage theory,and the fatigue life of the cutter shaft was estimated to be 443 h longer than the designed life by using the load spectrum of bending torsion coupling.
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