【摘要】 应用通用有限元程序ANSYS建立了大型特高压直流发生器结构体系的有限元计算模型,进行了地震作用下的动力反应分析。通过数值计算,讨论了输入不同地震波对结构地震反应的影响,分析了结构的抗震性能,以及拉杆对结构受力和自振特性的影响。同时计算了地震波作用下的滑移反应,验算了结构的抗倾覆稳定性,得到了结构在不同摩擦系数下的最大滑移量和残留滑移量。计算结果可为电力设施的工程抗震提供一定的参考。更多还原

【Abstract】 A large ultra high voltage(UHV) direct current(DC) generator was modeled and its seismic responses were analyzed using the finite element software ANSYS.The responses to different seismic waves and its seismic capability were discussed by numerical calculation,as well as the influence of tension bar on natural vibration characteristics and reaction of the structure was studied.Further,sliding displacement(SD) to seismic waves was calculated,and the maximum SD and remained SD under different friction coefficient were obtained.Overturning stability of the structure was also examined.This analysis is applicable for earthquake resistance designing of electrical facilities.更多还原