【摘要】 针对使用ANSYS软件进行结构动力分析时大多仅关心计算结果的收敛性而忽视计算结果的精度问题,采用ANSYS软件中PJ和HHT两种数值求解方法,选取合适的积分步长,对输电塔模型在地震荷载作用下的动力响应进行了数值模拟,通过对比分析数值模拟结果的相对误差,发现积分步长为Δt≤0.010Tmax、Δt≤0.018Tmax时可作为PJ、HHT方法的精度控制准则,HHT方法的计算精度高于PJ方法。更多还原

【Abstract】 When ANSYS software is used to analyze structural dynamics,it is always concerned with the convergence of calculation results and ignoring the accuracy.By selecting the appropriate integral step,the PJ and HHT numerical methods in ANSYS software are adopted to simulate the dynamic response of transmission tower model under action of seismic load.And then the relative error of numerical simulation results is compared.It is found that integral step Δt≤0.010Tmax and Δt≤0.018Tmax and can be used as the criterion of accuracy control for PJ and HHT methods;the calculation accuracy of HHT method is higher than that of the PJ method.更多还原