New ways to symmetrise free vibration equations of fluid-structure interaction systems

被引：2
|
作者：
Akhavan, Seyed Mehdi Zhian [1 ]
Aftabi, Ahmad [2 ]
Alamatian, Javad [1 ]
机构：
[1] Islamic Azad Univ, Civil Engn Dept, Mashhad Branch, Mashhad, Iran
[2] Ferdowsi Univ Mashhad, Fac Engn, Mashhad, Iran
来源：
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS | 2018年 / 171卷 / 04期
关键词：
computational mechanics; dynamics; structural frameworks; ASYMMETRIC NONCONSERVATIVE SYSTEMS; QUADRATIC EIGENVALUE PROBLEM; ARNOLDI ALGORITHM; SEISMIC BEHAVIOR; FORMULATION; CONTAINERS; TANKS;
D O I：
10.1680/jstbu.15.00084
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
It can be difficult to use finite-element (FE) analyses to solve fluid-structure interaction due to asymmetric equivalent mass and stiffness matrices. Based on mathematical calculations, two new techniques are proposed to achieve a symmetric eigenvalue problem. For this purpose, new scale matrices to symmetrise the interaction system's eigenproblem are presented. Numerical FE analysis of a liquid-storage tank proves the validity and efficiency of the proposed techniques compared with other existing approaches, providing higher convergence rate and lower analysis time.
引用
收藏
页码：283 / 294
页数：12
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