缩尺模型子结构混合模拟试验方法数值模拟研究

摘要

为进一步降低试验成本、提高试验效率，结合静力相似理论，提出了缩尺模型混合模拟试验方法。该方法在满足模型与原型材料相同条件下，理论推导出试验子结构所需的位移及反力相似条件，仅对试验子结构输入输出参数进行相似处理，运动方程及计算子结构相应参数与原型完全相同，来实现混合模拟试验。采用MATLAB和OpenSEES混合编程方法，实现了传统子结构混合模拟试验（包括剪切型、弯剪型、弯曲型模型）以及分布子结构混合模拟试验。相应足尺模型数值模拟结果比较，验证了本文所提方法的可行性。%This paper proposed the hybrid simulation test method based on the similar theory for the scale model to reduce the cost and improve the efficiency of the experiment. The proposed method deduces theoretically the similarity conditions of both displacement and force under the identical material between the model and the prototype. The obtained similarity conditions are only used for the physical substructure. The parameters of both the motion equation and the numerical substructure are not changed. So it is easy to use the proposed method for the hybrid simulation testing method. Using the mixed programming method of MATLAB and OpenSEES, this paper realizes both the tradition substructure test method for the scale model, including shear model, bending⁃shear model and bending model, and the distribution substructure test method for the scale model. Compared with the numerical simulation results of the corresponding full scale model, the proposed method is validated.