Damping computation of liquid sloshing with small amplitude in rigid container using FEM

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2006,（1）
• 页码范围: 93-98
• 页数: 6页
• 语种: 英文

摘要

An FEM (Finite Element Method) based damping estimation method of liquid sloshing with small amplitude in rigid container is proposed.Damping of the sloshing isaffected by many factors and some of them are very complicated.Therefore,this paper aims to provide an estimation range,instead of computing the exact value of damping.This method will consider the dissipation at wall,in the interior,and at the contaminated free surface.Owing to the complexity of viscous damping at the free surface,damping of two extreme conditions are computed to estimate the range of actual damping.An iterative algorithm is designed to solve a special general eigenvalue problem.Comparing the cornputation results with experimental results.it is found that most of the experimental results are within the range of the numerical estimation.Therefore,the method is effective in estimating the range of the damping of liquid sloshing with small amplitude in rigid container.