矿用锻造立环的动力学特性  

Dynamic characteristics of high-intensity forging ring for mining

作　　者：丁飞[1] 宫杰[1] 付云飞[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2014年第11期1545-1550,共6页Journal of Liaoning Technical University (Natural Science)

基　　金：辽宁省工业企业科技特派行动合作项目(2013KTP011)

摘　　要：为研究矿用锻造环在不同工况下的机械性能,采用有限元软件ANSYS Workbench对锻造环系统进行动力学分析,得到了锻造环在不同工况下的等效应力、最大等效应力、寿命和固有频率.结果表明:锻造环满载启动和卡链冲击时的最大应力分别为145.53 MPa和58.553 MPa,均小于材料的屈服极限1 166 MPa,锻造环具有较强的抗冲击性;满载启动所产生的随机扰动载荷会对锻造环造成更大的损伤;预紧力的增加可以减小链环发生共振的概率.To investigate mechanical properties of the high-intensity forging ring for mining under different working conditions, the forging ring system was analyzed by using ANSYS Workbench. The equivalent stress cloud pictures, the maximum equivalent stress curves, life cloud pictures under different working conditions and natural frequencies of the forging ring were obtained. The results show that the maximum equivalent stresses under starting with full load and chain blocked are 145.53MPa and 58.553MPa respectively which are less than the yield limit 1 166MPa, showing that the forging ring has good shock resistance; the random disturbance load caused by starting with full load can lead to greater injures of the forging ring; the increasing of the pre-tightening force can reduce the resonant vibration probability of the forging ring.

关 键 词：矿用高强度锻造环 启动冲击 卡链冲击 随机载荷 固有频率 

分 类 号：TD528[矿业工程—矿山机电]