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为了能够更准确预报梁、板耦合系统的功率流特性,在功率流模型解耦过程中引入梁、板连接负载,分析了输入梁、板的功率流,与有限元的分析结果对比,验证了含有连接负载的耦合模型的正确性,从而表明功率流的耦合建模中需要引入连接负载。通过改变结构参数、边界刚度,研究了忽略耦合模型连接负载引起功率流特性分析的误差规律,数值仿真结果表明:随着梁板长度比增大,结构边界刚度的减小,忽略连接负载造成的功率流分析结果误差增大,此时在梁板耦合建模中必须考虑连接负载;梁与板厚度接近时,考虑与不考虑连接负载的仿真数值相近,为了方便计算,可以在建模中忽略连接负载。
In order to predict the power flow characteristics of the beam-plate coupling system more accurately, the beam and plate load were introduced during decoupling of the power flow model, and the power flow of the input beam and plate was analyzed. Compared with the finite element analysis results, The correctness of the coupling model with connected loads shows that the coupling load needs to be introduced in the coupled modeling of power flow. By changing the structural parameters and the boundary stiffness, the error law of ignoring the analysis of the power flow characteristics caused by the coupling load of the coupled model is studied. The numerical simulation results show that with the increase of the length ratio of the slab, the stiffness of the structure decreases and the connection load is neglected The error of power flow analysis results in an increase. In this case, the connection load must be considered in the beam-plate coupling modeling. When the beam-plate thickness is close to the simulation value, the connection load is considered to be similar. For the convenience of calculation, Connect the load.