整株秸秆还田机刀轴载荷谱编制与疲劳寿命估算  

Load Spectrum Compiling and Fatigue Life Estimation of the Cutter Shaft of the Whole-straw Recycling Machine

作　　者：葛宜元[1] 王金武[1] 李世伟[1] 孙文 

机构地区：[1]东北农业大学工程学院,哈尔滨150030 [2]中国电子科技集团第49研究所,哈尔滨150001

出　　处：《农业机械学报》2009年第3期77-80,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：哈尔滨市科技攻关项目(2003AA6CN084)

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。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.

关 键 词：整株秸秆还田 刀轴 弯扭载荷谱 复合应力 疲劳寿命 

分 类 号：S222.29[农业科学—农业机械化工程]