解变截面梁大挠度振动的DQE法

Large amplitude vibrations of tapered beams by DQEM

以一种改进的DQ法 (DQE法 )解大挠度振动问题 .这种方法克服了原始的DQ法难以处理由于截面变化而引起的奇异性的缺陷 ,求解出的变截面梁非线性振动频率与已有结果相当一致 .

This paper solved the large amplitude vibration problem of tapered beams by an improved DQM (DQEM). The method was more effective than the original DQM because of adapting to the problems with singularity caused by the varying section, and the solved non linear vibration frequencies basically coincided with the known results, demonstrating the potentialities of DQM on solving non linear problems and problems with singularity.