摘要
在建立QY200/14/31型液压支架的三维模型基础上,采用虚拟样机技术和有限元分析相结合的方法,分析液压支架在额定载荷作用下关键部件受力特性。将三维模型导入动力学分析软件中,以获取关键部件铰接处作用力的变化规律,然后提取3个极限位置的模型进行有限元分析并比较位移/应力分布的特点。结果表明:液压支架从最小高度上升到最大高度处,柱窝处的作用力和整架刚度先减小后增加;最小高度处关键部件应力值较大,中间高度处居中,而最大高度处最小,说明该支架支撑高度离最大高度越接近,承载能力越强。
On the basis of setting up 3-d model of QY200/14/31 powered support,applying combined method of virtual prototype machine technology and finite element analysis,stress characteristic of key components of powered support under rated load was analyzed.Importing 3-d model into dynamics analysis software,variation rule of action force at hinge joint of key components was obtained.3 models at limit places were analyzed by finite element method and displacement/stress distribution characteristic was compared.Results showed as follows.Action force at prop nest and whole-support rigidity decreased firstly and increased latterly during the procedure that powered support lifted from minimum height to maximum height.Stress of key components was largest at the minimum height and was smallest at the maximum height.It showed that supporting height was nearer to maximum value,its bearing ability was stronger.
出处
《煤矿开采》
北大核心
2011年第3期107-110,共4页
Coal Mining Technology
关键词
液压支架
有限元
柱窝
动力学
应力
powered support
finite element
prop nest
dynamics
stress
