基于正交多项式的旋转Timoshenko梁集中动载荷识别

针对受集中动载荷的旋转Timoshenko梁识别模型，以广义正交多项式序列作为基函数拟合集中动载，将输入载荷的识别转化为正交多项式系数的求解。为了辨识未知集中力，建立了时域下旋转连续梁的动载荷识别理论。数值算例表明：该识别方法简便有效，精度较高，可运用于实际工程中。

Identification of concentrated dynamic load on rotating Timoshenko beam based on orthogonal polynomial

For the identification model of the rotating Timoshenko beam subjected to concentrated dynamic loads, the function of load is fit by using the primary functions sequence. Then the identification of the input load is transformed into the solution of the fitting coefficients. In order to identify the unknown concentrated dynamic force, the theory of load identification of the rotating beam in time domain is established. Numerical simulation shows that the method is simple, effective and has high accuracy in practical engineering.