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基于结构状态方程进行结构参数和荷载的共同识别。以结构参数修正因子为优化变量,由测得的结构动态响应结构和构造的系统矩阵计算相应的未知荷载。通过最小化实测结构响应与给定的修正因子下的计算结构响应间的距离来识别未知量。其中给定修正因子的系统矩阵由虚拟变形方法构造,并通过一个桁架结构的数值算例验证了该方法的有效性。
Common identification of structural parameters and loads based on structural state equation. Taking the structural parameter correction factor as the optimization variable, the corresponding unknown load is calculated from the measured structure dynamic response structure and the constructed system matrix. Unknowns are identified by minimizing the distance between the measured structural response and the calculated structural response at a given correction factor. The system matrix of the given correction factor is constructed by the virtual deformation method. The numerical example of a truss structure is used to verify the effectiveness of the method.