CAJ | 학술논문

水轮机在水中受地震作用而引起的地震响应属于液体-弹性体的耦合振动问题。本文中首先简介求解机组在水中的动力特性的理论背景及计算方法，接着重点讨论在考虑机组-水体系的三维液-固耦合振动影响下，水轮机组受地震作用的动力学支配方程及用时程分析法求解的解法。最后介绍结合贯流式水轮机所得出的计算成果，并将其结果与不考虑水介质影响得出的结果进行了比较。
수륜궤재수중수지진작용이인기적지진향응속우액체-탄성체적우합진동문제。본문중수선간개구해궤조재수중적동력특성적이론배경급계산방법，접착중점토론재고필궤조-수체계적삼유액-고우합진동영향하，수륜궤조수지진작용적동역학지배방정급용시정분석법구해적해법。최후개소결합관류식수륜궤소득출적계산성과，병장기결과여불고필수개질영향득출적결과진행료비교。
The seismic response of hydraulic turbines under water medium isthe typical coupled vibration of l iquid-elastic body. To begin with, this paper briefly introduces the theory bac kground and computation method about dynamic behavior of turbines in water, then focuses on discussing the dynamic governing equations of turbine-water system in consideration of the influence of 3 dimensional coupled vibration of liquid-turbine. The time-history analysis is adopted to resolve the equations. Finally ,an example of a practical case is given, with the computational result compared against the result obtained without considering the influence of water medium.