【摘要】 一直以来没有一个简便、有效的模型来模拟壳-液的多种移动边界、几何大变形和流体液面大幅晃动、粘性等多种非线性因素耦合作用的三维的地震反应分析问题.运用大型有限元程序ANSYS中的单元建立考虑液体晃动和罐底提离的储液罐模型,分析了地震作用下无锚固储液罐的动力响应.通过与经典的C lough试验结果进行比较,验证了所建模型的可靠性.模型在数值分析结果中成功的再现了液面的大幅晃动的现象和无锚固储液罐的罐底提离现象.更多还原

【Abstract】 In the seismic response analysis of storage liquid tank of supported-ground,there is not a simple and effective model in the forepassed research,which simulates the 3-D seismic response of liquid storage tanks,nonlinear factors such as multi-mobile boundary of shell and fluid and large geometric deformation.In this paper,several finite-element models have been built by the elements of the general finite-element procedure ANSYS.The analysis of the seismic response of storage liquid tank,which includes the anchored tank and unanchored tank,has been conducted.By comparing the numerical analysis with the experimental results of Clough,the ANSYS model is proved to be feasible and effective.The bottom of liquid storage tank uplift and sloshing of liquid can be reproduced by computational analysis successfully.The research provides the reference to the static and seismic analysis of liquid storage tank.更多还原