摘要
为研究充液容器内液体的晃动对储存系统动态响应的影响,应用泛函极值原理建立了任意充液容器内液体晃动的有限元分析模型,忽略了晃动自由面上液体的表面张力,分析了充液容器内液体晃动的固有频率、模态及地震对其影响,并与解析解进行了对比。分析结果表明,该方法可应用于三维任意形状充液容器内液体的晃动问题求解,且精确度较高,建议在工业设计中将液体晃动与结构弹性体振动问题统一分析。
In order to study the influence of liquid sloshing on the dynamic response of storage system, a finite element model is set up to solve the liquid sloshing in arbitrary container based on the functional extreme principle. By neglecting of the tensile force of liquid surface, the natural frequency, modes and seismic response are analyzed for a 3D liquid container and the numerical are compared with the analytical solution. The results show that the proposed method can he used to solve the liquid sloshing problem in 3D arbitrary shape container with high precision; it suggests that the coupling of liquid sloshing and structural elastic body vibration should be considered in industry design.
出处
《水电能源科学》
北大核心
2012年第1期142-144,216,共4页
Water Resources and Power
基金
长江大学科研发展基金资助项目(801170010110)
国家自然科学基金资助项目(50978033)
湖北省教育厅科学研究计划基金资助项目(03Z0901)
关键词
液体晃动
有限元法
充液容器
地震响应
liquid sloshing
finite element method
liquid filled container
seismic response
