摘要
本文导出了简谐激励力作用下单自由度系统受迫振动的通解公式，并在此基础上讨论了系统振动的初始条件（即暂态阶段）可能出现的某些重要的振动现象。
in this artical,a apply uniuersally forula of forced uibration in single free systemis established and with this conclusion some ifportant uibration phenomenons that may be ap peared in the uibration in the temporarily period are discussed
