摘要
通过ANSYS软件建立1CL50机床立柱的几何模型,采用四面体单元对立柱进行网格划分,分析了1CL50立柱的一阶、二阶和三阶振型.得出一阶振动为整机摇晃和横断面内弯曲振动,二阶振型为横断面内扭曲振动加垂直方向弯曲振动,三阶振型为横断面内弯曲振动加垂直面内弯曲振动.分析指出了加工过程中应该避开的激振频率.避免一阶振动应加十字型筋板,避免二阶振动应加对角交叉筋板,避免三阶振动应加菱形筋板.
A geometric model of 1CL50 machine tool column is built with ANSYS 5. 7. After the geometric model is divided into tetrahedrons, the anterior three vibration modes are analyzed. The first order mode is overall shaking and transversal bending of the machine tools. The second order mode is transversal warping and vertical bending. The third order mode is transversal bending and vertical bending. According to the results, the excited frequencies of the 1CL50 machine tool column are pointed out. Finally, cross-rib, diagonal cross-rib and rhombic rib are proposed to support the column to reduce the anterior three vibration modes correspondingly.
出处
《西安工业大学学报》
CAS
2007年第3期215-218,共4页
Journal of Xi’an Technological University
关键词
模态分析
立柱
建模
有限元
modal analysis
column
modeling
finite element
