农业机械学报2011，Vol.42Issue(5)：35-38,105,5.
真实载荷驱动下挖掘机工作装置疲劳寿命研究
Fatigue Analysis on Working Device of Excavator Driven by Practical Load
摘要
Abstract
As the practical load is very complicated during the digging process of excavator, an analysis method of combining experiment with the dynamics simulation was suggested. With laboratory 6 t mini excavator as the research object, pressure sensors and displacement sensors were used to measure the changing of pressures by hydraulic cylinders displacement during digging. With each cylinder displacement curve as the driving element, ADMAS software was used to simulate the dynamics performance of digging process. The working loads of articulated points of the working device were obtained through simulation. The life contours of boom and arm were obtained by the fatigue analysis of the working device with software MSC. Fatigue. It showed that the fatigue life was the shortest in the stress concentration area of boom and arm, and the calculating value was 13 years. The research results can provide theory basis for the structural design of working device.关键词
挖掘机/工作装置/真实载荷/动力学仿真/疲劳分析Key words
Excavator/ Working device/ Practical load/ Dynamics simulation/ Fatigue analysis分类
建筑与水利引用本文复制引用
张卫国,权龙,程珩,杨敬..真实载荷驱动下挖掘机工作装置疲劳寿命研究[J].农业机械学报,2011,42(5):35-38,105,5.基金项目
国家自然科学基金资助项目(950775156)和浙江大学流体及控制国家重点实验室开放基金资助项目(GIKF-2008006) （950775156）
