高技术通讯2023，Vol.33Issue(11)：1223-1232,10.DOI:10.3772/j.issn.1002-0470.2023.11.010
基于DEM-FEM的污泥干化水分检测装置落料冲击特性与疲劳寿命分析
Shock vibration characteristics and fatigue life analysis of the sampling mechanism of sludge drying moisture detection device based on DEM-FEM
摘要
Abstract
In this paper,the shock vibration characteristic and the fatigue life of the sampling mechanism of sludge drying moisture detection device are investigated based on the discrete element method and finite element method(DEM-FEM).The impact load distribution under different particle sizes and the impact characteristic under different re-ceiving angles are analyzed.Furthermore,the modal vibration patterns and amplitude-frequency responses under different excitations are studied,and the fatigue life distribution and safety factor distribution under different loads are analyzed.The results show that particle size and receiving angle have significant influence on impact character-istics,and the avoidance between the motor frequency and the structural inherent frequency during the advance of the sampling mechanism reaches 24%.Under normal light loads,the number of stress cycles that can be withstood is 1×108,while the minimum safety factor is approximately 0.54 under a heavy load of 100 N.The fatigue failure and fracture tend to occur at the connecting rods.关键词
污泥干化/水分检测/离散元和有限元方法(DEM-FEM)/冲击载荷分布/振动特性/疲劳寿命Key words
sludge drying/moisture detection/discrete element method and finite element method(DEM-FEM)/impact load distribution/vibration characteristics/fatigue life引用本文复制引用
李廉明,周佳立..基于DEM-FEM的污泥干化水分检测装置落料冲击特性与疲劳寿命分析[J].高技术通讯,2023,33(11):1223-1232,10.基金项目
浙江省重点研发计划(2021C03164)资助项目. （2021C03164）
