梁弯曲低阶固有模态的试验研究  

Experimental Study on Natural Low Order Modes of Beam Bending

作　　者：卓士创[1] 李顺才[2] 邵明辉[2] 

机构地区：[1]江苏师范大学物电学院,江苏徐州221116 [2]江苏师范大学机电工程学院,江苏徐州221116

出　　处：《煤矿机械》2012年第6期73-76,共4页Coal Mine Machinery

基　　金：江苏省"青蓝工程"(10QLD006);徐州师范大学研究生科研创新计划项目(2011YLA008)

摘　　要：介绍了测试梁固有频率及绘制主振型的试验方法。利用QLVC-ZSA1型振动信号分析仪、电磁激振器、加速度传感器等,通过共振相位判别法及锤击法测得了简支梁的1阶、2阶固有频率,并通过共振法绘制了相应的主振型曲线,实验结果与理论解答非常接近。The experimental methods of testing natural frequency and plotting main vibration modes of beam are introduced. Using QLVC-ZSA1 analysis instrument of vibration signals, electromagnetic exciter and acceleration sensor, the first order and second order natural frequency of simply supported beam are obtained by method of judging resonance phase and method of hammer excitation, moreover, corresponding curves of main vibrating modes are plotted by resonance method, and experimental results are close to theoretical solutions.

关 键 词：固有频率 主振型 共振法 锤击法 

分 类 号：O32[理学—一般力学与力学基础] TM935[理学—力学]