【摘要】 对比例阻尼系统给出了基于精细逐步积分法的动态载荷识别方法。首先将系统进行模态坐标变换得到无耦合运动方程 ,然后应用精细逐步积分法构造一种高效精确的载荷识别公式 ,再由量测到的结构动态响应求出动态力的时间历程。数值算例验证了本方法的识别精度是好的更多还原

【Abstract】 A dynamic load identification method is proposed for proportional damping systems based on high precision direct integration scheme. First, the modal transformation is carried out to obtain the uncoupled equations of motion. Then, an equation of load identification is constructed by the proposed high precision direct scheme. Finally, the time history of the dynamic loads can be determined by the measured structural dynamic response. Numerical examples show the high identification precision of the present method.更多还原